Explain the Explain Plan
Il y a 1 heure
ORACLE, Performances, PL/SQL, SQL, TUNING, Upgrade
Collected posts: Oracle, SQL, PL/SQL, Performance, Security...(More than 300 blogs)
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Oracle 23ai: Backup of Vector Data. - TL;DR: If you have datatype VECTOR in your tables, you can no longer use exp/imp for quick-backup of (small-ish test)sets. Switch to datapump, or use oth...
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Nested Cursor loops and conditional insert and update statements-Performace issues - Hi Tom, Hope you are doing well! I have 2 cursor loops. cursor C1,cursor c2(parameterised on C1 results). below is a pseudo code depicting the situation: <...Il y a 5 heures
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End loop statement can raise ORA-06502 too - I was puzzled when I got an error message allegedly occurring at a line containing an "end loop" statement and it took me a while to figure out that this...Il y a 7 heures
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UPDATE SET ROW – Convenience Might Be Costly - A cool feature in PL/SQL is the ability to perform common DML operations without needing to reference the individual columns of a table. The ability to do ...
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UPDATE SET ROW – Convenience Might Be Costly - A cool feature in PL/SQL is the ability to perform common DML operations without needing to reference the individual columns of a table. The ability to do ...
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Windows Recall : How to disable spy mode - You’ve probably heard of Windows Recall. It’s a Windows 11 feature that regularly captures your screen contents and analyses it with AI to “help you”. In...Il y a 2 jours
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Microgrid Strategic Drivers - Why the microgrids market is set to take off! - Micro Grids The world is rapidly changing, and with it, the way we produce and consume energy. Microgrids, localized grids that can operate independen...
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PyTorch to vectorize images, REST APIs to POST to Oracle - Using python to vectorize some images from my instagram feed, then some REST APIs to upload them to Oracle, where I can use SQL to compare them. The post...Il y a 4 jours
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The best way to determine the optimal connection pool size - Introduction In this article, we are going to see the best way to determine the optimal connection pool size using the FlexyPool auto-incrementing pool s...Il y a 5 jours
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How Can a Data Breach of an Oracle Database be Managed and Analysed? - No one wants to be hacked or their data stolen or leaked or their database be breached but it can happen. If you become the latest victim of a data hack an...Il y a 6 jours
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pre-post check script - ####################################################### #!/bin/ksh # set the DB env and run # Script to check PRE & Post checks Manually # # CB - -...Il y a 1 semaine
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Indexing and partitioning of JSON Collection Tables in Oracle Database 23ai - In the Oracle Database, a JSON Collection Table is a special table that provides JSON documents in a single JSON-type object column named DATA. JSON Collec...Il y a 1 semaine
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Indexing and partitioning of JSON Collection Tables in Oracle Database 23ai - In the Oracle Database, a JSON Collection Table is a special table that provides JSON documents in a single JSON-type object column named DATA. JSON Collec...Il y a 1 semaine
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SQL Case Expression - SQL Case Expression 1. What is the purpose of the CASE expression in Oracle SQL? A) To perform arithmetic operations B) To manipulate strings C) To make de...Il y a 1 semaine
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SAFE Exam Practice Test - 1) What is the act of persuading home owners to sell their homes at bargain prices mentioning that certain ethic groups will migrate to the particular neig...Il y a 1 semaine
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Connecting To Pluggable Database as SYSDBA - In Oracle container database architecture when you connect by default using bequeath protocol as SYSDBA you will connect against CDB$ROOT. Is there a way t...Il y a 1 semaine
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Taller 06 de Noviembre: Transformación en la nube: moderniza tus aplicaciones en Oracle Cloud - [image: Oracle Logo] Transformación en la nube: moderniza tus aplicaciones en Oracle Cloud [image: Participa el 6 de noviembre en el Taller de Modernizac...
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Automating Oracle Cloud Networking with OCI Service Gateway and Terraform - Oracle Cloud Infrastructure (OCI) offers a wide range of services that enable users to create secure, scalable cloud environments. One crucial aspect of a ...Il y a 1 semaine
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Using PyTorch to Predict Host CPU from Date/Time - In my previous post I mentioned that I took a machine learning class based on Python and a library called PyTorch. Since the class ended, I have been worki...Il y a 1 semaine
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Performance schema hands-on – part 2 - Preamble After a first part let’s move forward and activate more options of Performance Schema and go deeper of the analysis of performance. When activat...Il y a 1 semaine
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Something fun to do, a word search!! - From days gone by. I had this in some of the courses I wrote while at Hotsos as a filler for some blank pages. Enjoy!
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Troubleshooting the Oracle Cloud Infrastructure API - Sometimes, it can be interesting to learn how the Oracle Cloud Infrastructure (OCI) API works, particularly if your favourite Internet search engine fails ...Il y a 2 semaines
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4096 Columns - If you thought 1,000 columns was over the top for a table in Oracle, then you’ll love 23ai which allows you to stretch that to 4,096 columns if you’ve set ...Il y a 2 semaines
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How to create an OCI Container Registry and upload container images - With a lot of the Oracle Database Free and 23ai efforts behind me – for the time being, the time has come for me to put some focus back on the cloud-native...
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PASS Summit 2024 - Now that I’ve been at Redgate as the newest Advocate, along with my engineering duties, let’s talk about the annual Tags: Community, Summit Del.icio.us F...Il y a 2 semaines
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SQL Statement Management - It’s very difficult explaining to students new to relational databases how SQL works. There are many parts that seem intuitive and then there are others th...Il y a 3 semaines
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Microsoft Fabric - Data Factory (microsoft.com) *Create a Data Flow* Create your first Microsoft Fabric dataflow - Microsoft Fabric | Microsoft Learn Getting Started wi...Il y a 3 semaines
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Display JSON in APEX using APEX_MARKDOWN and JSON_TRANSFORM #JoelKallmanDay - Markdown is a plain text format for writing structured documents, and in APEX there is a built-in package that can transform Markdown notation into HTML....Il y a 3 semaines
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PL/SQL vs. JavaScript in the Oracle Database 23ai #JoelKallmanDay - JavaScript is the first language supported by the Multilingual Engine (MLE) in Oracle Database 23ai. Having additional languages in the Oracle Database a...Il y a 3 semaines
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Learning by letting others workout in the Gym - #JoelKallmanDay - This year I'm on the road for Joel Kallman Day, speaking at POUG 2024, AOUG (EMEA tour 2024), HrOUG 2024 and DOUG Day 2024. But when it's Joel Kallman Da...
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Upgrading Forms compared to APEX #JoelKallmanDay - My current project has involved rebuilding the entire aging stack for an environment that's currently 95% Forms, with any new work developed in Oracle AP...
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RDS Connectivity - I travel quite a lot for work. Most of it is in the US and Europe, but I get around to other places as well. Most of the time, connectivity, while not th...Il y a 5 semaines
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Oracle Cloud's free AI services - Whenever I need to play with any AI model for free or for fraction of cost in cloud, my first preference is Oracle cloud's free tier for AI. You can als...Il y a 5 semaines
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Cursor Sharing in Scheduled Processes: 4. How to Identify Candidate Processes for Cursor Sharing - This is the last in a series of 4 posts about the selective use of cursor sharing in scheduled processes in PeopleSoft. 1. Introduction 2. What happe...Il y a 5 semaines
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negative regexp - if you want to grep anything except foo, use grep -v or negative lookahead echo -e 'foo\nbar\nboz'|grep -P '^(?!.*foo).*$' bar boz it is just so beautiful ...Il y a 5 semaines
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Mastering Realtime Data: How I Topped the Leaderboard at PyData - Two weeks ago I went to PyData Amsterdam which kicked off with a tutorial day. These tutorials included a workshop on creating multi-modal LLM agents, ad...Il y a 1 mois
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Video on DataGuard Snapshot Standby - I have posted a new video on creating a "Snapshot Standby" database in DataGuard. Typically such a Standby can be used for "destructive testing" like D....Il y a 1 mois
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Sometimes Tech Is Not In Our Best Interest - Tech, we are led to believe, will improve our lives. Sometimes it undoubtedly does. But more and more often it seems to me that tech is making our lives co...Il y a 1 mois
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Sometimes Tech Is Not In Our Best Interest - Tech, we are led to believe, will improve our lives. Sometimes it undoubtedly does. But more and more often it seems to me that tech is making our lives co...Il y a 1 mois
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identify the character set of a Data Pump file - many times have a need to get information how export (dmp) file was created (what nls setup). The following PL/SQL code enables you to identify the charact...Il y a 1 mois
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Custom parameters in Method-R Workbench - Method-R Workbench is a leading tool to analyze many aspects of Oracles SQL-Trace files. It can use parameters in its commands and let users fill their ...
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Purging Standard and Unified Audit Data - Introduction It is not uncommon for businesses to have policies to retain audit data for several years, but then it ought to follow that that data should b...Il y a 1 mois
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Optimization of NOT NULL Constraint Creation - Several years ago I wrote a series of 8 posts about constraint creation optimization. I think it’s time to add some more posts to the series. I showed th...Il y a 1 mois
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Restore Standby Database from Standby Backups - This post shows the steps for full restoring (controlfile + data files) for a standby database using standby database backups. The same could be achieved u...Il y a 2 mois
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ORA-00059: Maximum Number Of DB_FILES Exceeded in 19C database - When I am adding datafile to my 19C database facing the below error. SQL> alter tablespace DATA add datafile '/u01/data/data15.dbf' size 20G; alter table...Il y a 2 mois
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Reflections on Founder Mode - Paul Graham’s Founder Mode is an important piece, and you should read it if for no other reason that “founder mode” will surely enter the lexicon (and as G...Il y a 2 mois
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Speaking At Oracle CloudWorld - For the first time in a few years I’ll be speaking at Oracle’s annual conference! I’m doing a joint session w/ a couple of the good guys from Oracle (Nages...Il y a 2 mois
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Public Speaking Advice - There was a post on the best public speaking advice with a video, have a look: https://twitter.com/AnnieAndrewsMD/status/1828046910986313933 I thought it’s...Il y a 2 mois
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Особенности ASH против статистики V$SQLSTATS при использовании SQL Profile для фиксации планов выполнения - После не очень удачной попытки фиксации очевидно более лучшего плана с помощью SQL Profile: , наблюдал странность отображения выполнения запроса (из генери...Il y a 2 mois
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Excluding / ignoring sensors in node_exporter - I like to use the Prometheus node_exporter to get metrics about my hardware. However some hardware (such as my X300M-STX mainboard) exposes sensors with so...Il y a 3 mois
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„Silent Install“ der Oracle Grid Infrastructure - Ich sehe es immer wieder bei Kunden, dass die Oracle Software, insbesondere die Grid Infrastructure, über die GUI installiert. X-mal klicken und dann läuft...Il y a 3 mois
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Staging Tables in Oracle 23ai - Browsing through the Oracle 23ai New Features Guide, I once again discovered a small, inconspicuous feature that I had previously overlooked: There is a ne...Il y a 3 mois
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PostgreSQL 17 : des sauvegardes incrémentales avec pg_basebackup - Bonjour Les 11 et 12 juin derniers, nous étions aux journées PGDAY à Lille pour découvrir les nouveautés autour de PostgreSQL. Cette conférence regroup...Il y a 3 mois
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New for 2024 - The Kscope100 (Positions 1-10) - So who is really responsible for the success of Kscope24? Is it your Kscope Executive Officer? Not a chance. Your ODTUG President? Not single handedly, ...Il y a 3 mois
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csv Data to Rows - SQL - If you have a data with Comma, or any other character delimited use the following query to convert it to individual rows.-- Created on 03/07/2024 by ANANT...Il y a 4 mois
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SELECT AI ! Generative AI on Autonomous Database - Imagine, we communicate with our Database in Business Language and Database responding with a result that matches the Business criteria. Natural Language P...Il y a 4 mois
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Caveat on index compression advanced low - The first time I played with the ADVANCED LOW option of index compression I got burned. I’m still in the process of getting burned. I don’t have much info ...Il y a 4 mois
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Blog Post Title - What goes into a blog post? Helpful, industry-specific content that: 1) gives readers a useful takeaway, and 2) shows you’re an industry expert. Use your c...Il y a 4 mois
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Client-side database connection timeout insanity - Attributed to Einstein but considered a dubious association, the quote is something like “Insanity is doing the same thing over and over and expecting diff...Il y a 4 mois
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Oracle Linux 8/RHEL8: Lock User After Failed Login Attempts with Faillock - Many security audits and checklists like the ones supplied by CIS or DISA STIG require locking user accounts after a number of unsuccessful login attempts....Il y a 5 mois
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Oracle EBS R12.1.3 autoconfig failed with Error - txkCfgUtlfileDir.sh - In one of our csutomer Environment during the Oracle E-Business suite siwtchover activity we encounted the following error during exeuction of autoconfig. ...Il y a 5 mois
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Thank You And Good Bye Again - Fill your mind with thoughts of peace, courage, and hope. – Dale Carnegie’s Golden Book.Il y a 5 mois
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Modifying ORDS Jetty Parameters - Recently we were working on an issue that was occurring to developers in Oracle Application Express’s (APEX) Page Designer. When we would attempt to vali...Il y a 5 mois
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How to add new disk at Oracle Linux? - You may need to add disk to your server. Adding a disk to Oracle Linux involves several steps, including identifying the disk, partitioning it if necessary...Il y a 5 mois
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Pickleball & Longevity - Studien zufolge trägt die Trendsportart Pickleball in nahezu idealer Weise zur Langlebigkeit bei! Wer möchte nicht sein Leben bei guter Gesundheit um 10 Ja...Il y a 5 mois
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Difference Between OCI Load Balancer & Network Load Balancer by A-Team…. - So this is more of me putting this article for my own memory. Oracle’s A-Team(www.ateam-oracle.com) has put together probably the best article on the diffe...Il y a 5 mois
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Running Llama3 model inference on Intel CPU and Intel GPU (1) - Introduction On April 18, 2024, Meta released Llama 3, the latest and most capable Open source large language model (LLM) model, which is a major leap ov...Il y a 6 mois
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Running Llama3 model inference on Intel CPU and Intel GPU (1) - Introduction On April 18, 2024, Meta released Llama 3, the latest and most capable Open source large language model (LLM) model, which is a major leap ov...Il y a 6 mois
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Building an Apache Spark Performance Lab: Tools and Techniques for Spark Optimization - Apache Spark is renowned for its speed and efficiency in handling large-scale data processing. However, optimizing Spark to achieve maximum performance r...
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SQL table macros 14: parameterized views - Developers like to reuse code. In SQL, views are reusable queries with lots of advantages, but one drawback: no parameters to limit the queries to only tho...Il y a 6 mois
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AGI vs AI - One of my newsletter readers was asking me about the difference between “AGI” and “AI”. In one issue of my newsletter last year, I put it this way: Artific...Il y a 6 mois
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How to Detect and Repair Corruption in Your Oracle Database - The *DBMS_DICTIONARY_CHECK* is a read-only and lightweight PL/SQL package procedure that helps you identify Oracle Database dictionary inconsistencies th...Il y a 8 mois
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Moh_Create Standby DB - ------------------------------------------------------------------------------------------------------------------------------------------ -- Prepare the ...Il y a 8 mois
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One year on the Giant Explore E+ 2 with a Rohloff Speedhub 500/14 - I thought since it’s been exactly a year since I upgraded my Giant Explore E+ to a Rohloff Speedhub 500/14 internal gear hub, that it’s a good time for an ...Il y a 8 mois
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New views in Oracle Data Guard 23c - Oracle Data Guard 23c comes with many nice improvements for observability, which greatly increase the usability of Data Guard in environments with a high...Il y a 10 mois
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I Cannot Participate in the Genocide | I Quit Blogging on Oracle Products - Since Oracle declared its "*stand with Israel*", it puts me in a moral dilemma, in one hand my main intention of blogging was to share the knowledge with...Il y a 10 mois
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APEX application to display tablespace usage of databases registered in an Oracle Enterprise Manager installation - This is an APEX application (created with APEX 23.2) to present tablespace usage data, retrieved from your OEM 13c. It uses *spaceUsed*, *bytesFree *an...
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The converged Christmastree - With this year’s converged Christmas tree, we achieved a particularly special variety. It not only contains the Multifir Christmas tree (...) Der Beitrag...Il y a 11 mois
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The converged Christmastree - With this year’s converged Christmas tree, we achieved a particularly special variety. It not only contains the Multifir Christmas tree (...) Der Beitrag...Il y a 11 mois
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PGIO Update - PGIO is the SLOB method for PostreSQL. An old friend of mine, Bart Sjerps, has implemented a modified PGIO in Python and posted it on Github: https://githu...Il y a 11 mois
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Whatever happened to SydOracle - So I haven't posted in *mumble* years. What happened ? Firstly there was this thing called Twitter. There seemed to be less blogging and more twee...Il y a 1 an
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Oracle 19c RU Release Update 19.19 nice little enhancement: DBA_HIST_SQL_PLAN ACCESS_PREDICATES and FILTER_PREDICATES columns populated - I've recently found out by coincidence a nice little enhancement that apparently was introduced with the 19.19 Release Update - a backport of the fix tha...Il y a 1 an
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Joel Kallman, Jerusalem, and the Oracle Community in Israel #JoelKallmanDay - It’s Joel Kallman Day again. And we still miss him dearly. A place Joel loved was Israel, and especially Jerusalem. … Continue reading →Il y a 1 an
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Joel Kallman, Jerusalem, and the Oracle Community in Israel #JoelKallmanDay - It’s Joel Kallman Day again. And we still miss him dearly. A place Joel loved was Israel, and especially Jerusalem. … Continue reading →Il y a 1 an
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Introducing the All New Data Vault Alliance Professional Membership - This is very exciting news to everyone interested is upping their #DataVault 2.0 game with access to exclusive member benefits including regular coaching a...Il y a 1 an
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enq: TM - contention Wait Event , Cause, Related SQL queries, Possible Resolution - The "enq: TM - contention" wait event in Oracle indicates contention for a table-level lock. This contention occurs when multiple sessions are attempting t...Il y a 1 an
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Oracle Database Service options for Azure Customers - We saw Larry Ellison visit Redmond for the first time to make an important partnership announcement with Satya Nadella. Yesterday’s announcement shows we h...Il y a 1 an
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Sqlstat History - Oracle Diagnosics pack purchased? AWR reports reveal many aspects of database usage and behavior. In addition to Enterprise Manager Cloud control pages the...Il y a 1 an
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How Slow Programs Are Like Christmas: a Sales Pitch - My company, Method R Corporation, makes systems faster. And we make people who make systems faster, faster. We train people to become performance optimiz...Il y a 1 an
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SQL Stats Analytics (from SQL*Plus!) - If you have access to some other graphical tool that displays time series on multiple dimensions for one or a set of SQL statements from an Oracle database...Il y a 1 an
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The End Of Richard Foote’s Oracle Blog (“Rock ‘n’ Roll Suicide”) - Of all my many Oracle blog posts, this particular post will remain with me the longest, for not only is it the last blog post I’ve done in a while, but i...
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Pluggable databases ignores SAVE STATE / is always opened in READ WRITE - I noticed a new “feature” on my managed DBAAS Oracle OCI environments, that whatever I…Il y a 1 an
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APEX (Multi) Application Settings - Most applications need some sort of "configuration" table. A simple key-value store where you can put values that might change on a different environment, ...Il y a 1 an
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Roll Forward Standby with 1 Command - I have a testbed that I use for research purposes. This testbed consists of a 2-node RAC primary database (RESP) and a 2-node RAC physical standby database...Il y a 1 an
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Designing a secured Landing Zone in AWS - When adopting cloud computing, securing your cloud infrastructure should be a top priority. Starting with a landing zone provides the foundational infras...Il y a 1 an
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SPM baseline and historical execution plans - I have often wondered why when we consult a past execution plan that is protected by an SPM baseline, there is no Note at the bottom of that execution plan...Il y a 1 an
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SPM baseline and historical execution plans - I have often wondered why when we consult a past execution plan that is protected by an SPM baseline, there is no Note at the bottom of that execution plan...Il y a 1 an
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GoodBye 2022, Hello 2023 - 2022 has been a peaceful and kind year both professionally and personally for me. I began the year as an AWS Data Lab Solution Architect, helping external ...Il y a 1 an
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Sql2Odi - best practices for auto-generating your ETL content - I blogged a while ago about our Sql2Odi tool that converts SELECT (and WITH as well) statements into Oracle ODI Mappings. (Blog posts 1, 2 and 3.) Now th...Il y a 1 an
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PMP Success Journey of Melanie Project Manager - Melanie Lorenzo, PMP® achieved PMP with all above target in all Domain. She attended 1-1 training with me few months back. I'm confident, she will excel in...Il y a 1 an
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World Cup 2022 Challenge online! - For the last 16 years, with every big football tournament (World Cup and Euro Cup), we've launched an Oracle APEX app where you can predict the scores of...Il y a 2 ans
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CBO and Partial indexing - Oracle 12c introduced Partial indexing, which works well for simple partitioned tables with literals. However, it has several significant issues: For insta...Il y a 2 ans
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New works by John Williams Waterhouse “discovered” - Is there an artist you liked, but would love to have seen more works by? I always liked John William Waterhouse and wished there were more pieces. You may ...Il y a 2 ans
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Use of packet capture and other advanced tools in network issues troubleshooting - Introduction In this post I’m sharing my recent experience troubleshooting a rather complex performance issue. The issue showed up during performance test...Il y a 2 ans
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Difference between ROWNUM and ROWID in Oracle - First let us examine what is ROWID and ROWNUM Both ROWID and ROWNUM are Oracle’s pseudo-columns ROWID The ROWID pseudo-column returns the address of the ro...Il y a 2 ans
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VS Code: Removal of Trailing Spaces - The Windows\Linux keyboard shortcut for removing trailing spaces in VS Code is: Ctrl + K Ctrl + X On macOS it is: ⌘ + K ⌘ + X Alternatively you can access ...Il y a 2 ans
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Microsoft Azure Virtual Training Day:DevOps with GitHub - I am starting to take some Microsoft training and this was the first one I tried. I thought it would be a good way to get familiar with how Git is integrat...Il y a 2 ans
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ORACLE PIVOT FUNCTION & ORA-00918 - First we create a view *v_emp* create or replace view scott.v_emp as select a.empno,a.sal,b.dname from scott.emp a, scott.dept b where a.deptno=b.deptno; ...
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“Oracle Database Security with practice solution” books - Finally I would like to say I made it. First time in Azerbaijan , I published “Oracle Database Security with practice solution” books. I strongly recommend...Il y a 2 ans
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Building and Using an APEX Item Property Matrix - I’ve recently been involved in some APEX development. One of the application form had a bunch of input items whose visibility and mandatory aspects depend ...Il y a 2 ans
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Analytical SQL - Running Total - Order by without Partition By - Welcome to the third post on the series Analytical SQL. In the first two posts we studied 1. Analytical Function without Window Clause 2. Analytica...Il y a 2 ans
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Running High Scale Low Latency Database with Zero Data In Memory? - I was talking to one of my oldest database colleagues (and a very dear friend of mine). We were chatting about how key/value stores and databases are evo...Il y a 2 ans
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How much storage am i using? - We were recently asked how much Azure storage we are actually using - initially I thought this was going to be a simple thing to find out - but actually ...Il y a 2 ans
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OJVM and DBA_REGISTRY_SQLPATCH - I woke up this morning and did what I do most days - doomscroll through twitter. One of the benefits of being in the US is that there are usually some inte...Il y a 2 ans
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Creating a SQL Patch with Many Hints Requires a Hack - In the past, when I created a SQL patch, I always specified a small number of hints. Last week, for the first time, I created one with more than 100 of the...Il y a 2 ans
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I have retired - I have now retired from work as of June 2021 and will no longer be updating this site. I had been doing a different role in the 18 months prior to retireme...Il y a 2 ans
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The Biggest Gap In The Clouds? High Performance RDBMS - Over the course of the last few blog posts, we’ve looked at how an increasing number of database workloads are migrating to the cloud, how there is more th...Il y a 2 ans
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Fun - Query Generated Calendar - Here's a query that will generate a full year calendar given any year. Enter the 4-digit year in the first line and execute the code. WITH yea...Il y a 2 ans
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PostgreSQL HA - Patroni, ETCD, HAProxy, Keepalived - Test failure scenarios - I will test few failover/maintenance scenarios and show results in this blog post. Just to mention, this is *not* proper production test. Before consideri...Il y a 2 ans
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100k views Thanks everyone Happy learning - 100k views !! Thanks everyone! Happy learning!!Il y a 2 ans
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Oracle to Postgres Migration Issue with Commit - If you have some PL/SQL, Oracle allows you to include *commit* statements between a *begin* and *end*. Assuming this is appropriate for your application,...Il y a 3 ans
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Puppy remembrance virtual goodbye session - Our dear friend Pieter left us unexpectedly in July, a lot of people couldn't say goodbye yet. Therefore we organise a virtual goodbye ceremony We wi...
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OAC 6.3 Features | Difference between OAC6.2 and OAC6.3 | Features of OAC6.3 | Oracle Analytics Cloud - The OAC 6.3 version is getting released. When comparing to OAC 6.2, below mentioned are the new features or enhancements in OAC 6.3 1 General1.1 ...
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Dulcian Presentation Archive - Dulcian personnel are active participants in Oracle conferences and user group meetings. Use these links to view slides presentations given at various Or...Il y a 3 ans
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Run ANALYZE TABLE — Do Not Rely on InnoDB's Automatic Recalculation of Statistics - This blog post is inspired by Jesper's recent blog post on how the automatic update of InnoDB persistent statistics may never trigger if servers are rest...Il y a 3 ans
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How can Oracle help with Zero-Trust Security Model? - *An overview of Zero Trust Security Architecture* Zero trust is an IT security approach to keeping sensitive data safe while complying with new privacy r...Il y a 3 ans
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Moving Databases from ASM to ZFS on Exadata - Exadata is the best database machine available to run every Oracle database workload. But many times, within Exadata proliferate a large number of test a...Il y a 3 ans
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Azure host-caching with Oracle database workloads on Azure VMs - There are almost 2,000 Azure customers running Oracle database workloads on Azure VMs, and that number is growing rapidly all the time. Running Oracle on ...Il y a 3 ans
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A study of the Linux kernel PCI subsystem with QEMU - *Oracle Linux kernel engineer Dongli Zhang provides a cheat sheet on how to utilize QEMU to study the Linux kernel PCI subsystem.* The Linux PCI sub...Il y a 3 ans
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Video: Updated Tour of Database Actions & JSON - Video tour and demonstration of our latest JSON interface in Database Actions (formally SQL Developer Web) for the Oracle Database. The post Video: Updat...Il y a 3 ans
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pgbouncer and slow server pool increase - This post is about an issue I ran into when trying to use pgbouncer in front of Yugabyte YSQL, the postgres layer yugabyte reuses for handling relational d...Il y a 3 ans
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Certification Tests – A Necessary Evil - Originally posted on Mike Gangler's Musings: In today’s database market, getting certified is becoming more of a requirement than previous years.?? The cur...
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Certification Tests – A Necessary Evil - Originally posted on Mike Gangler's Musings: In today’s database market, getting certified is becoming more of a requirement than previous years.?? The cur...
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Sending Push Notifications from Oracle Notification Service with Oracle Functions and Pushover - The Oracle Notification Service is an extraordinary service. I’ve blogged about it in the past (see the Complete Guide to the Oracle Notification Service...Il y a 3 ans
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Oracle Identity and Access Management 12c Upgrade Factory - Organizations want to reduce complexity and achieve more control across an increasingly complicated technology landscape. The dynamics and logistics are ...Il y a 3 ans
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Introducing Oracle Cloud Infrastructure Vulnerability Scanning Service - Oracle Cloud Infrastructure puts the security of critical workloads at the center of our cloud infrastructure. This modern public cloud is built with the...Il y a 3 ans
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Fusion Middleware Support Monthly Blog Index - March 2021 - Welcome to the Monthly Index for March 2021 The following provides quick links to recent Fusion Middleware Proactive Support Blog postings from over the ...Il y a 3 ans
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ANNOUNCING: Systems Engineering Forum - Modernizing Enterprise Infrastructure with Oracle ... - Oracle Systems Engineering is hosting a webinar on Oracle Solaris and SPARC systems in the North America time zone on April 13th, 2021. Join us live at 9...Il y a 3 ans
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ANNOUNCING: Systems Engineering Forum - Modernizing Enterprise Infrastructure with Oracle ... - Oracle Systems Engineering will be hosting a webinar on Oracle Solaris and SPARC systems in the North America time zone on April 13th, 2021. Join us live...Il y a 3 ans
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Autonomous Database Newsletter - March 8, 2021 - March 8, 2021 Newsletter For Autonomous Database on Shared Exadata Infrastructure Welcome to our latest customer newsletter for Autonomous Databa...Il y a 3 ans
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ANY_VALUE and FIRST/LAST (KEEP) - The FIRST and LAST (a.k.a. “KEEP”) aggregate functions are very useful when you want to order a row set by one column and return the value of another col...Il y a 3 ans
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Celebrating 25 Years of Java - Twenty-five years after its initial premier, Java is still the most widely used development language in the world. It continues to be a favorite technolo...Il y a 3 ans
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Upcoming talks UTOUG, INSYNC, and Uzbekistan INHA University. - March and April are booking up fast. Getting real busy and loving life. Utah Oracle Users Group (UTOUG) March 17 – 18 Keynote: “Curves ahead: Emerging tech...Il y a 3 ans
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Oracle ODA 19.10 Will Support KVM for Hard Partitioning of Oracle Databases - Major announcement made by the ODA team last week that this release will be the last release to support 11.2.0.4. After this release, customers will hav...Il y a 3 ans
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Optimizer Real-time Statistics Parameter in RU 19.10 Onwards - The Oracle Database 21c database initialisation parameter *optimizer_real_time_statistics* has been backported to Oracle Database 19c RU 10. The real-ti...Il y a 3 ans
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Am I running from inside a (DBMS_SCHEDULER) Job? - I’ve talked about improving your code instrumentation in the past, in particular how to use conditional compilation for your extra logger calls. See Debugg...Il y a 3 ans
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Investigation on why database doesn’t start after successfully dropping a diskgroup - Few months ago, while performing storage migration I faced an interesting issue which could lead to potential downtime if I didn’t notice a hidden warning ...Il y a 3 ans
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New Ranking Tags Feature of Oracle Dev Gym - You can take quizzes, workouts and classes at the Oracle Dev Gym solely with the objective of learning and improving your ...
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Oracle Database 21c Automatic In-Memory Enhancements - In Oracle Database 21c the Database In-Memory feature Automatic In-Memory (AIM) has been significantly enhanced. I wrote a blog post about AIM when it fi...Il y a 3 ans
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Security - "WIn16 :Z:\ Module 02 Footprinting and Reconnaissance\Website Mirroring Tools\HTTrack Web Site Copier and double-click httrack_x64-3.49.2.exe to launch the...Il y a 4 ans
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How to perform groupby using Python Itertools - Original Post can be viewed at How to perform groupby using Python Itertools Itertools is a powerful module and is part of python standard library. It pr...Il y a 4 ans
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The use and misuse of %TYPE and %ROWTYPE attributes in PL/SQL APIs - PL/SQL provides two attributes which allow us to declare a data structure with its datatype derived from a database table or a previously declared variable...Il y a 4 ans
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How to solve ORA-19505: failed to identify file in RMAN? - Reason: Archive log is deleted from os level and catalog is not synchronised. Posted by Pavan DBA on January 18, 2011 DBA’s will feel bad when they got a...Il y a 4 ans
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ORA-65140: invalid common profile name - How to solve if you get an error “ORA-65140” while creating a profile on Oracle Database 19c Enterprise Edition Release 19.0.0.0.0 . Let us see how we can ...Il y a 4 ans
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Segment Tunning. - Segment Tuning: ################ what is Fragmentations in a table. when there is huge delete operations done on a table, The blocks which occupied t...
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Read [PDF] Suits A Woman on Wall Street - *Download PDF Suits A Woman on Wall Street* *Download* PDF EPub Doc EBooks Rtf Mobipocket Kindle FREE UNLIMITED BOOKS, ALL IN ONE PLACE. FREE TO TRY FREE...
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Hardening Apache ZooKeeper security using zkpolicy - Apache ZooKeeper is an open-source server which enables highly reliable distributed coordination. Distributed applications can use it to maintain configu...Il y a 4 ans
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3 Benefits of Migrating to Oracle Linux Virtualization Manager (OLVM) - 3 Benefits of Migrating to Oracle Linux Virtualization Manager (OLVM) As Oracle VM inches ever closer to its 2021 end of support date, Oracle VM users have...Il y a 4 ans
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Oracle Cloud & Third party tools - There have been several buzz words and offerings since the invention of Cloud concepts. We have been hearing of Private Cloud, Public Cloud, Hybrid cloud a...Il y a 4 ans
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Advance Your Career with New 2020 Credentials - We’re excited to announce the release of many new 2020 certification exams. Being certified on the latest release ensures you stay current on Oracle te...Il y a 4 ans
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New Performance Tuning batch from 25th May [demo on 23rd May] - *Oracle Performance Tuning batch from 25th May [demo on 23rd May]* Duration: 20 classes Frequency: 5 days a week Timings: 7 – 8 AM IST Demo date & time: 23...Il y a 4 ans
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A Lifeline for EBS Customers Still on RDBMS 11gR2 and 12cR1 - Yesterday, the Oracle E-Business Suite Applications Technology Group made a couple of very significant announcements for E-Business Suite customers. -...Il y a 4 ans
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Oracle Cloud Marketplace GoldenGate Classic Environment - To launch Goldengate via GGSCI we need to enter “ggsci” followed by the “version” -bash-4.2$ which ggsci /usr/local/bin/ggsci -bash-4.2$ ggsci Usage: /us...Il y a 4 ans
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BUG in INSERT … SELECT with nested objects - I came across a very nasty bug in Oracle SQL engine while working on some new code. It took me a while to figure out what the problem is as the SQL code I ...Il y a 4 ans
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Updated Monitor Server Disk Space - Monitoring of potential issues includes knowing when any volumes reach a certain capacity. It can take time to add space or free it up so being notified be...Il y a 4 ans
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MySQL trading latency for throughput(not) - MySQL again. The goal: use binlog_group_commit_sync_delay setting to reduce IOPSes. The idea is to set binlog_group_commit_sync_delay to a large value like...Il y a 4 ans
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How to create signed url on google cloud storage? - A signed URL is a URL that provides limited permission and time to make a request. It's good to be used by someone who does not have a Google Account. I ca...Il y a 4 ans
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Retrieve PostgreSQL variable-length storage information thanks to pageinspect - Introduction In PostgreSQL a variable-length datatype value can be stored in-line or out-of-line (as a TOAST). It can also be compressed or not (see the do...Il y a 4 ans
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Retrieve PostgreSQL variable-length storage information thanks to pageinspect - Introduction In PostgreSQL a variable-length datatype value can be stored in-line or out-of-line (as a TOAST). It can also be compressed or not (see the do...Il y a 4 ans
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Succinct Study of Oracle SQL BI API as Evolution - SQL API Evolution from Oracle9i through Oracle19g This is a visual summary of my presentation at Oracle USA for the NYOUG 2019 Winter General Meeting. ...
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Snapshot Too Old Too Soon - What could cause a SQL statement to fail with ORA-01555 after 1 second? The answer appears to be related to a limitation of Active Data Guard that makes me...Il y a 4 ans
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Cloud Native Event Message Transformation - When designing a cloud native architecture on an enterprise scale it is most likely that you cannot start with a green-field situation. In all reality it i...
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Row Prefetching et PL/SQL - J'avais écrit il y'a plusieurs années déjà un article qui présentait le row prefetching avec en illustration un problème de performance d'une requête SQL o...Il y a 5 ans
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Logical Domains and Micro Partitions - Consolidation of different workloads often involves the use of virtualization technologies and/or partitioning of a physical server platform. Scenarios ...Il y a 5 ans
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Welcome - This site contains links to material relevent to my professional life. I'm an IT professional with experience in a range of disciplines and technologies ...Il y a 5 ans
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Phần mềm quản lý doanh nghiệp là loại phần mềm code khó nhất! - Full: https://codeburst.io/enterprise-software-is-the-hardest-software-to-write-c76d59725f3 Short: https://www.techinasia.com/talk/enterprise-software-hard...Il y a 5 ans
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TIP 120 - How much memory my Linux process is using - _uacct = "UA-2338271-1"; urchinTracker(); Just came across some notes regarding Linux memory and I thought to share the below tip on how to find out memory...Il y a 5 ans
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Security Alert CVE-2019-2729 Released - Oracle has just released Security Alert CVE-2019-2729. This vulnerability affects a number of versions of Oracle WebLogic Server and has a CVSS Base Sco...Il y a 5 ans
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Dbvisit Standby Version 9 has landed! - Dbvisit Standby, Disaster Recovery, Oracle [image: Dbvisit blog preview image] Dbvisit Standby Version 9 has landed! Wow what an exciting time at Dbvisit ...Il y a 5 ans
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Petit lexique du BigData - Avec l’importance grandissante des technologies BigData, les entreprises se sont retrouvées confrontées à une multitude de nouvelles notions, qu’elles on...Il y a 5 ans
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CDB Fleet in Oracle Database 18c - RSS content Oracle database 18c introduces a new CDB Fleet feature which allows many CDBs to be managed as one. A CDB fleet is a collection of CDBs and...Il y a 5 ans
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Oracle Ksplice introduces Known Exploit Detection functionality - The Oracle Ksplice team has added some really cool new functionality in Oracle Ksplice. Instead of writing and copying the blog pretty much, just go dire...Il y a 5 ans
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Playing with Oracle Database Security Assessment Tool (DBSAT) - The Database Security Assessment Tool (DBSAT) is an incredible free command line tool provided by Oracle Corporation as a utility to help you verify your d...Il y a 5 ans
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Update - I’m an applied researcher at RStudio, where I contribute to the r-tensorflow family of packages (e.g., tfprobability). I write about doing deep learning fr...Il y a 5 ans
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Oracle Certification Highlights – March - Oracle Certification highlights provides insight on new exams, exam preparation, exams that are retiring, program announcements, and all the great things t...Il y a 5 ans
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OS-Level Stalls, NAS and LD_LIBRARY_PATH - Although there are many posts about the evils of using LD_LIBRARY_PATH, at times it's required when working with Oracle, specifically with Oracle Golden ...Il y a 5 ans
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Oracle 12.2 ASM PWFile Recreated in New Disk Group. ASM and GI Doesn’t Start Anymore - Just a small pre story: new Storage Cells were delivered ACS configured new ASM Disk Groups data and configuration info were moved to new ASM Disk Groups o...Il y a 5 ans
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Statspack Documentation - There is a lot of information on Statspack on the web but I have not found the official Statspack documentation except for Oracle 9i. As of Oracle 10g the ...Il y a 5 ans
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Why JAVA Is A Top Career Option for Beginners - There are multiple platforms and streams for developing a product or application. When we talk of technologies and programming languages, Java is the most ...Il y a 5 ans
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Sangam 18: Presentations, Scripts and More - Many, many thanks to those who came to my three sessions at Sangam 18, the largest meeting of Oracle technologists in South Asia. As I promised, you can do...Il y a 5 ans
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The Ultimate guide to DevOps Tools Part #4 : Docker - In this series that related to DevOps Tools that helps you as DBA to automate your work and make it easier for you , this will be the last part for Docker....
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DOAG conference: Best of Oracle Security – older presentations (2013-2017) - Here is a list of older „Best-of“-presentations: Best of Oracle Security 2017 Best of Oracle Security 2016 Best of Oracle Security 2015 Best of Oracle Secu...Il y a 5 ans
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Cloud Security - Prevent DDOS attacks through Memcached - Recently, I provisioned a new server and went home for 2 days did not login, once I was back, I could see around 2.5 lakh failed login attempts from variou...Il y a 5 ans
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#OOW18 is almost there - Oracle Open World 2018 and Oracle Code One 2018 is just around the corner. This will be my 8th time in Oracle Open World and again I will be heavily busy w...
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#OOW18 is almost there - Oracle Open World 2018 and Oracle Code One 2018 is just around the corner. This will be my 8th time in Oracle Open World and again I will be heavily busy w...
Il y a 6 ans
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How people ask DBAs for tuning … - How people ask for database tuning, in the form of a more well-known analogy … Hey I hear you’re a mechanic. Cool. Can you fix my vehicle? No, I don’t know...Il y a 6 ans
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Renaming a RAC cluster - Introduction Renaming an Oracle RAC cluster is not an easy thing, unfortunately for me I had to do this today because the name chosen for the newly insta...Il y a 6 ans
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Explorative Information Visualization - The power of data visualization At the moment I am taking the course Explorative Information Visualization at Aalto University. This course focus on the pr...Il y a 6 ans
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Linux CPU stress testing sample script - for i in 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 33 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52...Il y a 6 ans
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MySQL 5.6 vs 5.7 - Whitelist preview of Performance Insights has just started on RDS MySQL and it gave me a chance to visually compare load profiles of MySQL 5.6 and 5.7. I f...Il y a 6 ans
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The Oracle Active Session History (ASH) - a real treasure trove - When Oracle introduced the Active Session History (ASH) a new gate of tuning and monitoring options was opened. Yes we had statspack, extended tracing and...Il y a 6 ans
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Oracle Database 18c - Install On-Premises for Linux - Oracle Database 18c was available on Oracle Cloud. Now everybody can download Oracle Database 18c On-Premises for Linux ( *LINUX.X64_180000_db_home.zip)* O...
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Failover with Amazon Aurora PostgreSQL - https://aws.amazon.com/blogs/database/failover-with-amazon-aurora-postgresql/ AdvertisementsIl y a 6 ans
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Introducing SQLdb360: merging eDB360 and SQLd360, while raising the bar for community engagement - Today, we are very happy to release SQLdb360, a new tool that merges together eDB360 and SQLd360, under a single package Tools eDB360 and SQLd360 can still...Il y a 6 ans
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Hide the sensitive columns – using $$PLSQL_UNIT_OWNER inquiry - Let’s suppose that a table owner (such as HR) wants to create a procedure that displays all columns for a specific criteria. Later, it wants to share this ...Il y a 6 ans
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Reflecting Changes in Business Objects in UI Tables with Visual Builder - While the quick start wizards in Visual Builder Cloud Service (VBCS) make it very easy to create tables and other UI components and bind them to business...Il y a 6 ans
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Reflecting Changes in Business Objects in UI Tables with Visual Builder - While the quick start wizards in Visual Builder Cloud Service (VBCS) make it very easy to create tables and other UI components and bind them to business...Il y a 6 ans
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Reflecting Changes in Business Objects in UI Tables with Visual Builder - While the quick start wizards in Visual Builder Cloud Service (VBCS) make it very easy to create tables and other UI components and bind them to business...Il y a 6 ans
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Reflecting Changes in Business Objects in UI Tables with Visual Builder - While the quick start wizards in Visual Builder Cloud Service (VBCS) make it very easy to create tables and other UI components and bind them to business...Il y a 6 ans
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Reflecting Changes in Business Objects in UI Tables with Visual Builder - While the quick start wizards in Visual Builder Cloud Service (VBCS) make it very easy to create tables and other UI components and bind them to business...Il y a 6 ans
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European Privacy Requirements: Considerations for Retailers - When retailers throughout Europe adopt a new set of privacy and security regulations this week, it will be the first major revision of data protection gu...Il y a 6 ans
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European Privacy Requirements: Considerations for Retailers - When retailers throughout Europe adopt a new set of privacy and security regulations this week, it will be the first major revision of data protection gu...Il y a 6 ans
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Date and Time Format in ASMCMD for File Listing - This is a short blog post to give you an idea how you can define your own custom date and time format for “ls -l” command in ASMCMD. If you use ASMCMD qu...Il y a 6 ans
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Blogging v2 - So the last post here was in 2011…seven years later I should probably post again, just to point random Google visitors to : My new blog : https://rmoff.net...Il y a 6 ans
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Good bye and thanks for the memories! - Hello fellow reader, 8 years ago I set up a goal to share my knowledge with fellow database engineers via this blog. This resulted in 36 (hopefully, decent...Il y a 6 ans
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Filter predicates with NVL on mandatory columns using the index - Last Friday at work, I overheard a conversation between two DBA's about a performance problem of a job which usually ran in 10 minutes, now taking more tha...Il y a 6 ans
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Oracle Solaris 11.4 Public Beta Released - Yesterday the Oracle Solaris 11.4 Beta was released to the public. You can download it from OTN to have your go with it. Please read the documentation to l...Il y a 6 ans
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ContractOracle.com is for sale - If you would like to purchase this domain, email Robert.Geier@ContractOracle.com This domain is perfect if you are a contractor working with Oracle softwa...Il y a 6 ans
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Nested VM : Oracle VM 3.4.4 on VMWare VSphere Hypervisor 6.5 - More than 4 years ago, I wrote an article about the same subject, find out here. Other time, other software version, slight configuration setting changes. ...Il y a 6 ans
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Cloud Networking Basics for the Non CCNA certified – IP Address - As more and more enterprises are migrating their IT deployments to the Public Cloud, several IT personnel who are not classically trained on networking the...Il y a 7 ans
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Mmm, π - Young *rz.He* over on Stack Overflow has a question about why SQL*Plus doesn't parse every line of a PL/SQL block in case it's a comment in order to avoi...Il y a 7 ans
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ORA-28017: The password file is in the legacy format. - *Today I was trying to change password for one of my 12c database and got below error :-* SQL> alter user dbsnmp identified by "*************" * ERROR at ...Il y a 7 ans
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My Internship Experience at Pythian - I remember nervously walking out of one of King’s Cross St Pancras Station’s numerous exits searching for the 7 Stanley Building. I wandered through the mo...Il y a 7 ans
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Windows and .NET sessions at Openworld - Interested in Oracle Database on Windows performance and security, Active Directory, or .NET development topics? At Oracle Openworld SF next week there's a...
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Oracle Open World 2017 presentation - Hi, I will be presenting about ASM internals in Oracle Open World 2017 conference on Sunday October 1st. Following are the details: Session ID: SUN5682 Ses...Il y a 7 ans
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Demo App for REST enabled SQL - Getting Started The new Oracle REST Data Services SQL over REST. How to enable that is on my last blog post here: http://krisrice.blogspot.com/2017/09/or...
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Step by step guide to set up Multi source replication in MariaDB - Expectations: 1. You should be knowing how to set up replication in MySQL 2. You have basic knowledge of MySQL components such as binary logs, relay logs, ...Il y a 7 ans
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Unable to locally verify the issuer's authority - Chuka pinged me when he got this error in Qualys logs after installation of qualys agent on a server 2017-07-24 15:23:08.363 [qualys-cloud-agent][232147]:...Il y a 7 ans
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Why Education-to-Employment is such a Hard Road - When you are young, things change from one year to another in both education and personal life. That’s why, some like to call youth *the period of many t...Il y a 7 ans
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Using DML with ADRCI - The Oracle Database has some useful debugging and diagnostics features. One such utility called the Automatic Diagnostics Repository Command Interpreter or...
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Exadata 12c PX Adaptive Offloading - Here is yet another case when you may not see as much offloading on your Exadata as you expect. I was recently investigating a simple *select count(*)* qu...Il y a 7 ans
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CSV parsing and tokenizing strings - Most of you will be familiar with the “Comma Separated Values” data format. It is used in spreadsheets and other places to store ordered lists of character...Il y a 7 ans
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My NoPlsql versus SmartDB deep-dive presentation materials - For those who are interested here are my two slidedecks used in yesterday's deep-dive session at ODTUG, here they are in ppsx format which includes all the...Il y a 7 ans
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This site moved to dbacatalog.blogspot.com - This site moved to dbacatalog.blogspot.com please visit dbacatalog.blogspot.comIl y a 7 ans
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MySQL Cluster 7.6: The First Milestone - The first Development Milestone Release (DMR) of MySQL Cluster 7.6--7.6.2--is now available! You can see the full changelog for 7.6.2 here. But before we...Il y a 7 ans
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Whoa! Release News for PHP OCI8, node-oracledb, Python cx_Oracle, Instant Client and ODPI-C - I'm just catching up on some releases that happened prior/during my vacation. Here are some things you may have missed tweets on: - PHP OCI8 2...Il y a 7 ans
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Comment acquérir les compétences nécessaires à la transformation digitale lorsqu'on est partenaire Oracle - Notre vie est de plus en plus interconnectée avec nos appareils. Alors que les machines sont de plus en plus intelligentes, l'Internet of Things est appe...Il y a 7 ans
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Oracle VM Features: Distributed Resource Scheduler - One of the handy management features of Oracle VM is the Distributed Resource Scheduler (DRS). DRS lets administrators load balance CPU and network resou...Il y a 7 ans
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12.2 New Feature: Automatically Synchronize Password Files in Oracle Data Guard - A new feature automatically synchronizes password files across Oracle Data Guard configurations. When the passwords of SYS, SYSDG, and so on, are changed, ...
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Oracle Database 12c R2 is in General Availability for On-premise Customers - With the announcement of GA for on-premises customers, Oracle Database 12c R2 is now available everywhere-in the cloud, with Oracle Cloud at Customer, an...Il y a 7 ans
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Oracle Database 12c Release 2 is out and with it Docker build files on GitHub - Oracle just released Oracle Database 12c Release 2 for on-premises Linux and Solaris. With the Oracle 12c R2 release Oracle has also released the latest ...Il y a 7 ans
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Sponsored: 64% off Code Black Drone with HD Camera [del.icio.us] - Our #1 Best-Selling Drone--Meet the Dark Night of the Sky!Il y a 7 ans
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User-based filters in query zones - whilst developing query zones is relatively well documented, the ability to filter output based on the currently logged on user is less well defined, and...Il y a 7 ans
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Funny "ORA-01017: invalid username/password; logon denied" during DataGuard switchover operation from DG broker - Recently one of my customers encountered a problem when they tried to perform a switchover from DataGuard broker command line interface. $ dgmgrl / DGMGRL...Il y a 7 ans
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Announcing the 2016 PL/SQL Challenge Championship for Database Design - In 2016, 340 people answered 6,185 quizzes in the Database Design quiz on the PL/SQL Challenge. I'm pleased to see so many people taking an interest in h...Il y a 7 ans
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AWS Solutions Architect – Associate Certification - Hi All, I am glad to announce that I have completed AWS Solutions Architect – Associate Level certification This is a completely new world with lots of opp...Il y a 7 ans
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“library cache lock” waits from many concurrent DBMS_JOB.submit() operations - I have faced performance issue on one of production database in banking environment. From AWR report I found that “library cache lock” as the top wait ev...Il y a 7 ans
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cleartext userid and passwords in config fles - how to get rid of them - Since ages Oracle has wallets that can be used to store userid and password configurations for connections in safe way. There are a few rules you need to...Il y a 7 ans
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Do you suffer from Storage Stockholm Syndrome? - The last year at DSSD (now a part of Dell EMC) has been an extremely interesting one for me, and I’ve learned a great deal, which is always good. Some of t...Il y a 7 ans
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On issuing commit from database PL/SQL - There was something of a storm on Twitter on 12-Oct-2016. Twitter is a nice medium for, say, showing a photo to your followers or referring them to an in...Il y a 7 ans
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Oracle CX Partner Enablement Summit – North America - Join us at the Oracle Headquarters in Redwood Shores, CA to continue to develop your CX practices and solutions based on Oracle’s CX Platform proposition...Il y a 8 ans
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#doag2016 and we are presenting!! - Portrix Systems will be at #doag2016… and we will be presenting too!! Each day of the conference, members of the Portrix Systems staff will be active! On T...Il y a 8 ans
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Unclean shutdown detected. for mongod process in Arbiter server - Following messages were received in “/var/log/mongo/mongod.log” of primary server and other servers of replicatset Sat Jul 30 02:48:08.631 [rsHealthPoll] ...Il y a 8 ans
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Reasons to upgrade to Enterprise Manager 13.2 - Before, during and after the Open World, I have received numerous queries on the release of Enterprise Manager 13.2. This is an important release for *En...Il y a 8 ans
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Favor Skeletal Implementation in Java - Skeletal implementation is a design by which we can use the benefits of the interface and abstract class together. The Java Collection API has adopted th...Il y a 8 ans
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Segment Statistics - rem******************************************************** rem Show Segments with the highest Lock waits rem André Karlsson rem https://www.protractus.com...Il y a 8 ans
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Database encryption in transit, why is this still a question? - As data flows between systems, applications and databases, valuable information is pass along either internal, external or a combination of both types of...Il y a 8 ans
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SQLfail? SQLwin! - update sqlfail set last_posting_date = date'2016-08-18'; It’s been a while since I’ve published here. You see, I’ve been kind of busy. Back in January 2015...Il y a 8 ans
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Temporary tablespace takes ages to drop - A simple command like 'DROP TABLESPACE TEMP;' in a regular database can become excessively slow. The reason behind this is quite simple, even if the users...
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The User Experience (UX) Lab: Onsite Usability Testing at OpenWorld - Heading to Oracle OpenWorld? The Oracle Applications User Experience (OAUX) team will be hosting the usability lab at Oracle’s largest conference of the ...Il y a 8 ans
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Redshift~<- Denodo!<-- Tableau!<- TDE -Large Data volume Extracts: - *Redshift~<- -large="" data="" denodo="" extracts:="" tableau="" tde="" u="" volume="">* 1: Creation of Large Extract in Tableau from Data sources with hi...Il y a 8 ans
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30 Useful Linux Commands for System Administrators - In this article we are going to review some of the useful and frequently used Linux or Unix commands for Linux System Administrators that are used in their...Il y a 8 ans
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“ASH math” of time_waited explained with pictures and simulation - As explained by John Beresniewicz, Graham Wood and Uri Shaft in their excellent overview ASH architecture and advanced usage, avg( v$active_session_history...Il y a 8 ans
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Test Drive Oracle APEX 5.1 Early Adopter 1! - It’s here! Oracle Application Express 5.1 Early Adopter 1 is available at https://apexea.oracle.com/ and we are really looking forward to get your feedback...Il y a 8 ans
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Get the Familiar Database You Trust, In the Cloud - With Oracle Database Cloud, you can have up to 3x mirroring of storage for data redundancy, 100% system backup and restore, plus data centers in multiple...Il y a 8 ans
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Moving Sideways - The past two years have seen a lot of change in my life :- - I moved to Singapore thinking it would be for a year or two at least and is now looking ...Il y a 8 ans
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Moving Sideways - The past two years have seen a lot of change in my life :- - I moved to Singapore thinking it would be for a year or two at least and is now looking ...Il y a 8 ans
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Become a Master of Oracle 12c - Oracle Database 12c: Administrator Certified Master Technology moves on, and to keep pace with it, so should you. If you are an Oracle Certified profession...Il y a 8 ans
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Become a Master of Oracle 12c - Oracle Database 12c: Administrator Certified Master Technology moves on, and to keep pace with it, so should you. If you are an Oracle Certified profession...Il y a 8 ans
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Formation Performance Oracle à Genève le 18 mai 2016 - Une journée de formation Performance Oracle est organisée par le Swiss Oracle User Group le 18 mai 2016 à Genève. http://www.developpez.net/forums/blogs/19...Il y a 8 ans
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Help Celebrate One Million Answers at the PL/SQL Challenge! - *Sometime* in the next couple of months, someone will submit the 1,000,000th answer on the PL/SQL Challenge. And Chris Saxon, member of the AskTom Answer...Il y a 8 ans
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Tech15 - Last December I presented at Tech15, the largest Oracle conference in the Europe. Many thanks to the organizing team of this great conference. Here is my p...Il y a 8 ans
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MariaDB - a surprise dependent subquery execution plan - Welcome myself into the MySQL world. While working with MariaDB 10.0.21, there are two queries as shown below, one uses alias and the other does not, seems...Il y a 8 ans
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OCI Client-Side Deployment in 12C - The 12c version has introduced a new features called “OCI Client-Side Deployment Parameters” this feature gives you the possibility to override some OCI pa...Il y a 8 ans
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Moving my blog! - Hi All! I just wanted to let you know I’ve moved my blog to https://me-dba.com I’m going to hide all content from this site as it will be available from th...Il y a 8 ans
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Oracle Data Integrator 12c new Features Overview - Merhaba, Bu yazımda Cloud teknoloji ile hayatımıza giren Oracle 12c ile kullanıcılara sunulan *Oracle Data Integrator 12c *nin getirdiği yeni özelliklerin...
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Point In Time Recovery Using Binlog In MySQL-Part 1 - Lets see how we can recover our database or tables using MySQL Binary logs. To avail this feature make sure that BINARY LOGS are enabled in MySQL.Here We ...Il y a 8 ans
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Docker Containers and Delphix Architecture - I use wordpress for my personal blog. Works fine on it’s own. It is just me making a few posts here and there. Occasionally there are problems like an upgr...Il y a 8 ans
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Mount Clone Database in TSPITR - "alter database mount clone database" is a statement that forces all datafiles to be put OFFLINE when mounting the target instance. You'll see it's being u...Il y a 8 ans
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Oracle Clusterware - Startup (Internals) - It's an long standing post for me to share how the CRS start-up works. Hope every one known with pictorial representation of CRS start-up provided in orac...Il y a 8 ans
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Giúp nam giới điều trị ung thư tinh hoàn bằng nấm lim xanh - Ung thư tinh hoàn là một căn bệnh chỉ xuất hiện ở nam giới liên quan đến chức nắng sinh sản. Căn bệnh này có thể xuất hiện ở bất kỳ độ tuổi nào...Il y a 8 ans
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Mystats utility - A variation on Jonathan Lewis's SNAP_MY_STATS package to report the resource consumption of a unit of work between two snapshots. Designed to work under co...Il y a 8 ans
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Grants to retrieve SQL_MONITOR - A quick post as I have been struggling to get the full list of object level grants to be able to retrieve the output of DBMS_SQLTUNE.REPORT_SQL_MONITOR. 1 ...Il y a 8 ans
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How to Find the Optimal Configuration for Your Virtualized Environment - Thanks to the New York Oracle User Group for allowing me to present and to all who attended for their valuable questions and comments. The presentation sho...Il y a 8 ans
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Things Be-a-Changin' - "OTN Garage" Will be Called "OTN Systems Hub" Very Soon! - Oracle OpenWorld 2015 | OTN Systems Hub Hi Y'all, As I have mentioned a few months ago, the *OTN Garage* name will be changing to *OTN Systems Hub*. Thi...Il y a 9 ans
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Automation for DBA - Ansible part 1 - Hello, In this post I would like to move forward with software provisioning and configuration. In my last post I covered a ways to build a "core VM" and n...Il y a 9 ans
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Client Connection Fails to Instance on Linux - I faced with a problem which clients were failing to connect to a DB2 instance on linux. To check it out I logged on to the system as root and tried to "s...Il y a 9 ans
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db file scattered read, db file sequential read & direct read wait events explanation - As Oracle DBA's we come across these wait events in most environments. We will discuss their definitions and see what we can do to reduce them. *db file sc...
Il y a 9 ans -
Fill the Glass Episode 4 with Jorge Rimblas! - Measuring software performance in the real world Featured Speaker: Jorge Rimblas September 11, 2015 | 10:00am–11:00am CST Jorge is your Been There Done Tha...Il y a 9 ans
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Make Your Nominations: Oracle Database Developer Choice Awards - I Did. You Should. Here's the Nomination Form. Here's Why: The Oracle Database Developer Choice Awards celebrate and recognize technical expertise and ...Il y a 9 ans
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Frequently asked questions about Nashorn and Node.js - During many of my talks about Nashorn, Node.js on the JVM and related topics, I frequently get asked these kinds of questions and I'd like to try to give s...Il y a 9 ans
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Xeoma Review - I decided to write a CCTV review after our bank mail started to disappear from our mailbox. I have learned quickly that simply purchasing cheap camera won’...Il y a 9 ans
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Oracle E-Business Suite Release 12.2: Technical Planning, Getting Started, and Go-Live Checklist - This link helps you plan your move to Oracle E-Business Suite Release 12.2, providing the following resources: An in-depth Oracle E-Business … Continue rea...Il y a 9 ans
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Printing a large XMLTYPE value using DBMS_OUTPUT - As a sort of primitive debugging-method I wanted to show the contents of an XMLTYPE variable using DBMS_OUTPUT.PUT_LINE. When you want to extract the conte...Il y a 9 ans
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Sorry about late approval of comments.... - Just wanted to apologize about the late approval of a couple of comments. I thought I'd approved them but when I got on to do a blog entry I found that t...Il y a 9 ans
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What to consider to set innodb_sort_buffer_size variable ? - what to consider when choosing the value to use for the innodb_sort_buffer_size configuration option. The innodb_sort_buffer_size option specifies how muc...Il y a 9 ans
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Another blog on Oracle Standard Edition - Recently I found a blog dedicated on Oracle Standard Edition too. It’s from Ann Sjökvist and it’s available at this URL: http://www.sejustloveit.com/. ...Il y a 9 ans
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New blog to handle the PJC/Bean articles - Here is the link to another place that stores the PJCs/Beans article without adds. http://forms.pjc.bean.blog.free.fr/ FrancoisIl y a 9 ans
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Oracle Database In-Memory Advisor Released - Oracle Database In-Memory option was released with Oracle Database 12c (12.1.0.2) and the In-Memory Advisor (IMA) has been much awaited since then. The Or...Il y a 9 ans
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What Is That Light-Green Oracle Database CPU Wait Time? - This page has been permenately moved. Please CLICK HERE to be redirected. Thanks, Craig. What Really Is That Light-Green Oracle Database CPU Wait Time? ...
Il y a 9 ans -
12c New features - 1.1 Advanced Index Compression Advanced Index Compression works well on all supported indexes, including those indexes that are not good candidates for the ...Il y a 9 ans
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Find it. Fix it. Real-World SQL Tuning Cases - Jan. 13 Webinar Followup - If you missed my January 13th webinar entitled "Find it. Fix it. Real-World SQL Tuning Cases" you can now access the recording and download the presentatio...Il y a 9 ans
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Continuing the story - One of my 2015 new year's resolutions, was to finish the story I started on this blog. The story being a talk that I had delivered a couple of times 3-4 y...
Il y a 9 ans -
No Write Permission on ACFS Mount Point - Last night, I managed to create the ACFS Mount Point after resolving the issue *"ACFS-9459: ASVM/ACFS is not supported on this os version"*. But, after c...Il y a 10 ans
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GoldenGate Active-Active replication using CONFLICTRESOLUTION - *Source* *Target* *Database Version* 11.2.0.4 11.2.0.4 *OS Version* OEL 6 – 64 Bit OEL 6 – 64 Bit *OGG HOME* /u01/GG/training/source /u01/GG/training *Go...Il y a 10 ans
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How to encrypt the data (tablespace or column's table) using a software keystore previously known as Oracle Wallet - To create a standard Oracle wallet and then add a master key to it you have to follow few basic steps: *1) Configure the sqlnet.ora file to define a file sy...
Il y a 10 ans -
brew install sqlplus - Gee, that didn’t work. For those of you wondering about the title of this post, I’m referring to the brew package manager for Mac OS — a nice utility for i...Il y a 10 ans
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_direct_read_decision_statistcs_driven, _small_table_threshold and direct path reads on partitioned tables in 11.2.0.3 (Part 2) - This is continuation of my last post regarding direct path reads on partitioned tables in Oracle 11.2.0.3. To recap, the behavior I observed is that direc...Il y a 10 ans
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On Error Messages - Here’s a pet peeve of mine: Customers who don’t read the error messages. The usual symptom is a belief that there is just on error: “Doesn’t work”, and tha...Il y a 10 ans
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Step by Step Creating Asm instance and database - Click Add Button Click Next Button Click Next Button Click ide and next Button Size 3gb Click Next Button Click Finish Button Add another one disk 3g...Il y a 10 ans
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Visit and Bookmark the My Oracle Support Blog - Untitled Document [image: MOS Icon] The My Oracle Support Blog continues the "Get Proactive" discussion and covers all topics related to My Oracle Suppor...Il y a 10 ans
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A New Challenge - About two years ago Joyent began offering Linux instances, running under KVM, stored on ZFS, and secured by Zones (“double hull virtualization”). Since the...Il y a 10 ans
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Upcoming Events... - I took some time off from the road at the beginning of 2014 - getting ready to get back on the road again, lots of trips scheduled from February till the e...Il y a 10 ans
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How to find out all default values in init.ora? - This small test case shows it. [oracle@node1 ~]$ echo $ORACLE_HOME /u01/app/oracle/product/11.2.0.3/dbhome_1 [oracle@node1 ~]$ cd $ORACLE_HOME/dbs [oracle@...Il y a 10 ans
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Auditing a user in Oracle - Do you need to audit a user in your Oracle database? AUDIT ALL BY JOEUSER BY ACCESS; AUDIT SELECT TABLE, UPDATE TABLE, INSERT TABLE, DELETE TABLE BY JOEU...Il y a 10 ans
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Yeni Blog - Kendime ait blog adresim http://zekeriyabesiroglu.com . Bundan sonraki yazılarımı http://zekeriyabesiroglu.com den takip edebilirsiniz. Teşekkürler.Il y a 10 ans
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User defined locking with DBMS_LOCK - User defined locks with DBMS_LOCKS often brings up unexpected results, especially when it occurs within a mix of transactions in an application layer. Ther...Il y a 10 ans
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12C ADG Enhancements - - *Explain plan now works on Standby* SQL> select database_role from v$database; DATABASE_ROLE ---------------- PHYSICAL STANDBY SQL> select ...Il y a 11 ans
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latency heatmaps in D3 and Highcharts - See Brendan Gregg’s blog on how important and cool heatmaps can be for showing latency information and how average latency hides what is really going on: ...Il y a 11 ans
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oratop from MOS - This is just a pointer post to a tool which I discovered today. It is ORATOP, to monitor databases real time like top of unix flavours. It is pretty much l...Il y a 11 ans
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The ateamsoab2b blogs have been moved to www.ateam-oracle.com - The A-Team has a new web site: The A-Team Chronicles All of our articles and posts from various locations, including this site, have been consolidated th...Il y a 11 ans
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Something for the future - A nice little feature in Oracle Database 12c is to query patching information via SQL. You can do this from SQLPlus or any other SQL interface jdbc/odbc ...Il y a 11 ans
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How to Move USER_SDO_GEOM_METADATA like a Grandpa - Sometimes moving a small amount of data in Oracle database requires more work than the actual task you need to complete. DBAs always have their tools (PL/S...Il y a 11 ans
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ReUse flag in PeopleSoft AE program – Bind variable issue and its impact on Performance - It has been long since I blogged as I got busy. Personally I became a Father and officially, I moved to PeopleSoft Performance and Benchmark(P&B) team. N...
Il y a 11 ans -
Hotsos 2013 A personal Touch 3/4 – Third Day - After having a good sleep I attended the first session in the morning from George Djerdj Srdanov with a presentation called “How to Get the Most Out of You...Il y a 11 ans
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Little Changed - Incredible and depressing to see people still getting Oracle internals as wrong as this.Il y a 11 ans
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Profile Baselines Patches - Whats the difference … I should have written this one earlier but better late than never. So, lots of DBA’s might me thinking, why oracle has 3 ways to acc...Il y a 11 ans
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Add Code w/ Syntax Highlighting to PowerPoint - …or any media that supports rich text or HTML. I often include code-snippets or queries in technical presentations. I find them much more visually appealin...Il y a 11 ans
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SQL 2008 Active-active cluster on windows 2008 R2 Share storage migration - This is my POC doc before we migrate our production sql 2008 cluster to new storage. it has two parts: first part simply install the cluster on 2 ESX VM im...Il y a 11 ans
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Hash Semi Right Join : Oracle Tuning Tip#27 - *TOPIC:* Hash Semi Right Join *DEFINITION:* As described semi-join in previous forum (Tip#25), a semi-join between two tables returns rows from the outer ...
Il y a 11 ans -
Identify memory leak in Java app - One important advantage of java is programer don't care memory management and GC handle it well. Maybe this is one reason why java is more popular. As J...Il y a 11 ans
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E-Business Suite R12 integration with Oracle Identity Management 11g - After successful implementations of Oracle SSO 10g with Oracle E-Business Suite 11i and R12, I have now completed an installation and implementation of th...
Il y a 11 ans -
GoldenGate error OGG-01755 SQL error: OCI Error 26,723 = ORA-26723 - I was trying to register extract OGG v 11.2 on one of my dev servers GGSCI (tpadldb10.gratiscard.com) 1> dblogin userid srvegate password xxxxx Successfu...Il y a 12 ans
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A secret treasure house of Oracle books - One of the most prolific publishers of Oracle technology and application books - *Packt Publishing *just published its 1000 cover. Packt books are written ...
Il y a 12 ans -
The Two Ways of Doing a Job - Whether it's deployment, development, performance tuning, troubleshooting or something else, there are two fundamentally different ways of doing your job: ...Il y a 12 ans
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A look at System Statistics - - Till 8i Analyze command was used to collect statistics. However Analyse has following Problems : 1).Doesn't support External Tables. 2...Il y a 12 ans
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An introduction to SQL Tuning : Basic Optimizer Operations - An introduction to SQL Tuning : Basic Optimizer Operations. Setup SQL Tuning sample schema 1. Full Table scan 2. Index Fast Full scans 3. Index Full sc...Il y a 12 ans
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Oracle database on IBM Power systems with LPAR - Quite often I have been involved into discussions on Oracle database tuning or best practices for IBM AIX machines especially logically partitioned (LPAR...Il y a 12 ans
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Waiting for “PX Deq Credit: send blkd”? - Occasionally I hear someone talking about how to reduce the waiting time of the event “PX Deq Credit: send blkd”. And it’s not uncommon to also realize tha...Il y a 12 ans
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AUDIT : principes - *Paramètres d'initialisation concernant l'audit :* SQL> col name for a25 SQL> col value for a45 SQL> select name, value from v$parameter where name like '%...Il y a 12 ans
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Edition Based Redefinition Part 3 - This is the third part in a series about the new Edition based Redefinition functionality of Oracle 11gR2. The first two parts are here: Part 1 Part 2 In t...Il y a 13 ans
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Debug mode for MOS - Had an SR in which I learned about a debug mode for FLASH MOS (tried it in HTML, no go *grin*). Hold down the Control key and click on the Oracle My Oracle...
Il y a 13 ans -
OraSRP 4.1.0 - First time I've read about LOBREAD lines in 10046 traces in Vladimir Begun's blog-post dated Jun 2, 2010. I've tried to reproduce such trace in my environm...Il y a 13 ans
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The Last Post... - ...at least here, on this blog as I’ve moved over to blog.lisadobson.com now.I’ve copied all the posts from here across to the new blog, but I will also be...Il y a 13 ans
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Interesting case of the restriction of global hints - One of my colleagues sent following test case, of which he couldn’t control the join order with hints. 1. Create objects – table t1, t2 and t3 2. Now Let’s...Il y a 13 ans
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Materialized View - +++++++++++++++++++++++++++++++++++++ MVIEW refresh Status on MASTER Site : +++++++++++++++++++++++++++++++++++++ set pages 1000 set linesize 180 col SNAPSHO...Il y a 13 ans
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oow 2010 presentation slides - Here are the slides of the presentation I did yesterday: OOW2010 Christian Bilien. The room was full and I noticed a number of people were standing at the ...Il y a 14 ans
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Composite Interval Partitioning isn't as advertised. - Oracle® Database VLDB and Partitioning Guide 11g Release 1 (11.1) Part Number B32024-01 says: Interval Partitioning Interval partitioning is an extensi...Il y a 14 ans
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Quick Tip: Counting Cursors - Counting the number of open cursors in a database instance can be a confusing activity. Perhaps an application has received an "ORA-01000: maximum open c...Il y a 14 ans
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Blog relocation - I've decided to move on from TypePad, and I'm now blogging at www.guyharrison.net/blog (RSS http://guyharrison.squarespace.com/blog/rss.xml ) See you there...Il y a 15 ans
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APP-FND-01564: ORACLE error 31202 in changepassword - We had this issue in our production this morning. Our dedicated sysadmin team were not able to change any user password from frontend. They were receiving ...Il y a 15 ans
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Having more than 4GB of RAM on x86 Linux - When you do some googling on having more than 4GB of RAM on a 32bit x86 Linux system you usually get a lot of responses like: it's not possible, you won't ...Il y a 16 ans
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★ 5 Links from Around the Web (2007-04-10) - Links to interesting, educational, informational, or just plain fun websites...Il y a 17 ans
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Moving to WordPress - Blogger irritates me. Let's see if Wordpress makes me happy. http://oraclesponge.wordpress.com/ I've used the supplied import functionality to move over po...Il y a 18 ans
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Weirdness of v$datafile on a standby db. - Here are some oddities of v$datafile on a standby Oracle gets content of v$datafile from controlfile, but on a standby database "STATUS" column wouldn't ge...Il y a 18 ans
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