ORACLE, Performances, PL/SQL, SQL, TUNING, Upgrade
Collected posts: Oracle, SQL, PL/SQL, Performance, Security...(More than 300 blogs)
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Oracle Is Guilty Until Proven Innocent - Received email from Technical Lead | Senior Manager for the following errors. Error Description: 0: Invalid pool name ‘oraclePool’ while getting a database...Il y a 8 heures
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How to update a user defined database package in production - I have a user defined database package which is used quite heavily. When I need to update the code body, I will get several
ORA-04061: existing state...Il y a 18 heures -
When Auditing Attacks - I had a particularly annoying problem with Oracle auditing a few days ago. I thought I would write about it here in case anybody knows a solution, or if ...Il y a 23 heures
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Rethinking Asset Management in the Energy Sector - In the traditional business landscape, companies have evolved independently, interacting primarily through markets and structured information exchanges....
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Pickleball Lingo - Viele Fachgebiete und Sportarten haben eine eigene Terminologie entwickelt, so auch Pickleball. Als Neuling fragt man sich dann oft: Wovon reden die da? Ic...Il y a 1 jour
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How to calculate percentiles with SQL PERCENTILE_CONT - Introduction In this article, we are going to investigate how to calculate percentiles with the SQL PERCENTILE_CONT function. Domain Model Let’s consider...Il y a 1 jour
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The ORA-00060 error… - The ORA-00060 error. As a DBA we can see that error message during daily database works. As you know that error referred to as a “deadlock detected” error....Il y a 2 jours
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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 3 jours
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Critical Patch-Updates: Statistiken für 2024 (aktualisiert 04/2024) - Diese Woche hat Oracle die Critical Patch Updates für April 2024 veröffentlicht. Mit 411 Korrekturen für 118 Produkte sind es 13 Prozent mehr als vor 3 Mon...Il y a 3 jours
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Fetch()-ing GraphQL data in MLE/JavaScript - This post demonstrates how to use the new GraphQL endpoint ORDS provides in MLE/JavaScript. The first part covers the basics, the second one details the us...Il y a 4 jours
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EXISTS vs EQUALITY - sand in the gears - The best thing about doing SQL Optimization is there is always something that needs attention. The worse thing about doing SQL Optimization is there is...
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Configuring Shared Global Area (SGA) in a Multitenant Database with a PeopleSoft Pluggable Database (PDB) - I have been working on a PeopleSoft Financials application that we have converted from a stand-alone database to be the only pluggable database (PDB) in ...Il y a 1 semaine
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Configuring Shared Global Area (SGA) in a Multitenant Database - I have been working on a PeopleSoft Financials application that we have converted from a stand-alone database to be the only pluggable database (PDB) in ...Il y a 1 semaine
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Having fun with SQLDev connection names 🚨🚰🌤️ - You can give yourself an easy visual reminder of what database connection you're working in, and also make them easier to find 🚀 The post Having fun wit...Il y a 1 semaine
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Let’s meet at TROUG Ankara ORACLE Day! - Date :25 April 2024 Address: ORACLE Ankara Office | 312 Vista Eskişehir Yolu 2176.Cadde No:9/7 Söğütözü Çankaya 06530 Ankara Agenda: 13:00 – 13:30 The Suc...Il y a 1 semaine
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Video on Client Side Failover in RAC - I've posted a new video demonstrating Client Side Failover defined by the tnsnames.ora fileIl y a 1 semaine
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SHRD0014: GLLEZL - process exiting with failure - *SYMPTOMS* Journal Import completes with the following error: *Error* ------ ORA-01653 : unable to extend table GL.GL_IMPORT_REFERENCES ORA-01653 ...Il y a 1 semaine
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Oracle Database 23c–some intriguing new features–dbms_pipe, Prometheus, pre-authenticated request URL, reset database session, Vector Search - This article is really just a quick draft to remind myself of some really interesting new Oracle Database features that I want to further investigate. Ve...Il y a 1 semaine
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AWR Snap ID - What to do when you hit a problem (possibly after an incomplete recovery) that reports an “ORA-00001 unique key violation” on sys.wrm$_snapshot_pk – as rep...Il y a 1 semaine
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Creating A User in OCI…. - I have I have had to create few OCI users for an internal demonstration. Since I had to do it and explain this to my team,...Il y a 1 semaine
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Inicio Taller Virtual: Oracle Container Database - Oracle Database 19c, quedará fuera de soporte Premier al final de este mes de abril, tal y como lo mencióne en la publicación del blog https://oracledbacr....Il y a 1 semaine
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Will I lose my existing AUDIT settings in 23c? - A few days back I posted a video how Unified Auditing is now the only support auditing option in 23c, and gave you some easy steps on how to migrate your e...
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Will I lose my existing AUDIT settings in 23c? - A few days back I posted a video how Unified Auditing is now the only support auditing option in 23c, and gave you some easy steps on how to migrate your e...
Il y a 1 semaine
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AnythingLLM - Any LLM, Any Document, Full Control, Full Privacy, Local, Secure - This video shows how to locally install AnythingLLM to privately and securly and remotely run any LLM with any RAG document. It all runs locally with zer...
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Generic Prompts and Lacking Diversity- Fix it, ChatGPT - I’ve been intensely preparing the LinkedIn Learning Oracle 23c courses, set to film later this month. Despite my responsibilities as Tags: AI, AI in IT D...Il y a 2 semaines
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pg_recursively_delete : Simplifier les suppressions récursives - Si vous avez été amené au fil de votre carrière à manipuler de gros volumes de données contenus dans plusieurs tables possédant des références croisées e...Il y a 2 semaines
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Learning SQL Exercise - I’ve been using Alan Beaulieu’s Learning SQL to teach my SQL Development class with MySQL 8. It’s a great book overall but Chapter 12 lacks a complete exer...Il y a 2 semaines
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Setting the CARDINALITY (undocumented) hint on two tables - I was trying to solve a performance problem in a query containing a left join on two global temporary tables. Clearly if you run an Explain Plan on such ta...Il y a 3 semaines
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Postgres Backup/Restore - *pg_dump* à Creates a backup of ONE database at a time *pg_dumpall* à Can back up *ALL* of your databases simultaneously, pg_dump -U username -...Il y a 3 semaines
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IslandSQL Episode 7: DML Statements in PostgreSQL 16 and What I Miss in Oracle Database 23c - Introduction In the last episode, we covered DML statements in SQL*Plus/SQLcl scripts for the Oracle Database 23c. The IslandSQL grammar can now also han...Il y a 3 semaines
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dbms_dictionary_check package back-ported to 19c [19.22] - DBMS_DICTIONARY_CHECK package has been back-ported from 23c to oracle 19c when applying January 2024 RU [19.22]. The package is a read-only PL/SQL package ...Il y a 4 semaines
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10GbE in the DeskMini X300 - As my little home server I have an Asrock DeskMini X300 with an AMD Ryzen 7 5700G (16 cores) and 64GB of memory. A nice low powered home server to play aro...Il y a 4 semaines
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PostgreSQL LDAP client authentication implementation - Preamble Is PostgreSQL LDAP client authentication easy to implement ? I have already tried it for multiple database flavors and this article will greatly...Il y a 4 semaines
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Locate an Error in Wrapped PL/SQL - I had a conversation a few weeks ago with someone who asked me how to find a missing table when you have a wrapped PL/SQL file and cannot see the source co...Il y a 4 semaines
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How to Use Databases Inside GitHub Actions - GitHub Actions is a platform that automates the build, test and deployment pipeline of your GitHub projects. Since its introduction, GitHub Actions has bee...
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Disaster Recovery for the Oracle Autonomous JSON Database - “You can’t prepare for everything – but you can prepare for anything.” – Paul Youngjohns Backup-Based Disaster Recovery is a low-cost DR option for databas...Il y a 5 semaines
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Disaster Recovery for the Oracle Autonomous JSON Database - “You can’t prepare for everything – but you can prepare for anything.” – Paul Youngjohns Backup-Based Disaster Recovery is a low-cost DR option for databas...Il y a 5 semaines
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When is an Oracle ACE not an Oracle ACE? - As of this week (11th March 2024) I am no longer a proper Oracle ACE – and this is exactly as it should be. I am now an ACE Alum (I would prefer Alumnus bu...Il y a 5 semaines
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When is an Oracle ACE not an Oracle ACE? - As of this week (11th March 2024) I am no longer a proper Oracle ACE – and this is exactly as it should be. I am now an ACE Alum (I would prefer Alumnus bu...Il y a 5 semaines
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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 5 semaines
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Moh_Create Standby DB - ------------------------------------------------------------------------------------------------------------------------------------------ -- Prepare the ...Il y a 1 mois
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Archivelog Space Needed Python Script - I wrote a script called archivelogspace.py to help size our Oracle archive log filesystems to support replication tools such as Fivetran, DMS, or GoldenGat...Il y a 1 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 2 mois
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patchmgr Failed at Backup Before Upgrade - Let’s start with some background about patchmgr: “patchmgr” is a tool specifically designed for managing... The post patchmgr Failed at Backup Before Upg...Il y a 2 mois
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Oracle 19: Сравнение Query Block Registry - Для ускорения/оптимизации выполнения запроса коллега Сергей Перегудин проанализировал и предложил поправить/зафиксировать план важного, но замедлившегося з...Il y a 2 mois
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reading a LOB in another session - Reading a LOB in Oracle is often quite easy: it's just a column in the query and all the libraries available today are doing the work necessary to make...
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Enhancing Apache Spark and Parquet Efficiency: A Deep Dive into Column Indexes and Bloom Filters - In the ever-evolving landscape of big data, Apache Spark and Apache Parquet continue to introduce game-changing features. Their latest updates have broug...Il y a 2 mois
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NMLS Exam Prep Practice Questions - 1) Do all licensed loan originators need surety bond for each state in which they are actively licensed? a) Yes, they need surety bond for each state b) No...Il y a 2 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 3 mois
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AWS CLOUD STORAGE OVERVIEW - There are three types of cloud storage: object, file, and block. Each storage option has a unique combination of performance, durability, cost, and interfa...Il y a 3 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 3 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 4 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 4 mois
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PostgreSQL Events – A Newbies Perspective: #PGSQLPhriday 014 - For this month’s #PGSQLPhriday 014 blogging event, Pavlo Golub has asked a pretty simple question: What do you think about PostgreSQL events? Prior to th...Il y a 4 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 4 mois
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My Personal Conference Review 2023 - In the last two weeks I was very busy: three conferences in ten days are exhausting – but it was a lot of fun. The last conference for this year is over no...Il y a 4 mois
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What punch cards teach us about AI risk - I (finally) read Edwin Black’s IBM and the Holocaust, and I can’t recommend it strongly enough. This book had been on my queue for years, and I put it off ...Il y a 4 mois
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Database 19c Certified for Oracle Linux 9 – Preinstall Package Available - Oracle Database 19c is certified for Oracle Linux 9 now (minimum requirement RU19.19). The Oracle Database preinstall package in its initial version is als...Il y a 5 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 6 mois
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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 6 mois
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Valdosta State Endorses Low Code Solutions - Valdosta State continues to use Oracle APEX for stand-alone applications as well as enterprise-level applications with thousands of daily users. Arthur Ri...Il y a 6 mois
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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 6 mois
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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 6 mois
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Database Authentication using Azure AD Token #JoelKallmanDay - Oracle Database supports modern ways of authentication using some of the cloud directories – OCI and Azure. I’ve tested Azure AD and set up authentication-...Il y a 6 mois
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The Care and Feed of Oracle User Groups - #JoelKallmanDay - On todays #JoelKallmanDay, my topic of choice is The Care and Feed of Oracle User Groups. What is an Oracle User Group? According to Wikipedia, it is: ...
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Pressing Pause on APEX #JoelKallmanDay - To honour this year's #JoelKallmanDay, I'd like to use this as an opportunity to speak about mental health, rather than get technical like I have done in...
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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 6 mois
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Bitcoin Halving - Bitcoin halving is a significant event on the Bitcoin network every four years. During this event, the block reward that miners receive for verifying tr...Il y a 6 mois
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HTAP: Well, How Did We Get Here? - I’m speaking at an HTAP Conference put on by PingCap, (the folks responsible for TiDB). As usual, I’m the only one with a cap. 🙂 By now the event is s...Il y a 6 mois
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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 7 mois
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oem cpu jul 23 - this blog is no longer maintained. go there : OEM patch | LaurentSchneider.Com (wordpress.com)Il y a 7 mois
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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 7 mois
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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 7 mois
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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 7 mois
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Best model from UK clients to set-up offshore development centre in India (IDC) - Introduction: Built to operate model generally is heard in the infrastructure industry, nowadays IT businesses are also constantly seeking innovative sol...Il y a 8 mois
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Adding PDBs is Easy also in v23c. - TL;DR: Success! I've got several PDBs plugged in a CDB, all created "just from scripts", no "template-recovery". From here on it is all is Dead-Simple. O...
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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 8 mois
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Out of Place (OOP) Patching of Oracle Restart 21c - Previous post showed OOP for 19c Oracle restart. Things are much simpler in 21c and can expect the same for 23c once released. The -switchGridHome option i...Il y a 8 mois
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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 9 mois
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Oracle Database Online Migration to ASM - We were recently migrating one of our non-production databases to Oracle ASM. Previously, we used the Linux files system EXT4. We wanted the flexibility ...Il y a 10 mois
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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 10 mois
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Oracle AVDF Installation and Setup Document - This blogpost will provide you detailed information about Oracle Audit Vault and Database Firewall (Oracle AVDF) setup. Oracle AVDF is a comprehensive Data...Il y a 11 mois
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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 11 mois
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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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Autonomous Database – Scaling UP/DOWN OCPU’s using Pl/SQL API’s - Autonomous Database provides an option of Scaling UP and DOWN of CPU & Storage. Scaling UP/DOWN of CPU resources is a common practice that most of the cust...Il y a 1 an
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APEX Interactive Grid: Cell Selection as Default - When you want to copy a specific value from an Interactive Grid, you would need to change Row Selection to Cell Selection in the Actions menu. When you do...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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ALTER TABLE NOCOMPRESS - What a difference three words can make. No, not those ones, these ones MODIFY DEFAULT ATTRIBUTES. https://docs.oracle.com/en/database/oracle/oracle-databas...Il y a 1 an
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ALTER TABLE NOCOMPRESS - What a difference three words can make. No, not those ones, these ones MODIFY DEFAULT ATTRIBUTES. https://docs.oracle.com/en/database/oracle/oracle-databas...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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Rebuild index candidates - Recent reminder on Oracle on line course "Understanding Explain Plans & Index Utilization" by Dan Hotka and problems that I faced in real professional life...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 1 an
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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 1 an
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DECODE With Ranges - Tim Hall wrote this post yesterday (as part of Joel Kallman Day 2022) with some examples for “the old way” vs. “the new way” to do some stuff. One of the...Il y a 1 an
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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 1 an
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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 1 an
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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 1 an
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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 1 an
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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 1 an
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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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SQL table macros 13: compare with primary key - I just updated my COMPARE_ROWSETS function to handle an optional primary or unique key.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 year...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 2 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 2 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 2 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 2 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 2 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 2 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 2 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 2 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 3 ans
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Your session has expired - For Custom Apps after Oracle Apex Upgrade from 5 to 20 - I was getting the above error "Your session has expired" immediately after upgrade of Oracle Apex from Version 5 to 20 in my premises. Searched a lot and d...Il y a 3 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 3 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 3 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 3 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 3 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 3 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 3 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 3 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 3 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 3 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 3 ans
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COLLABORATE 20 Conference Converted to Digital Virtual Conferences - This year’s Oracle technology users groups COLLABORATE conference has been cancelled due to the evolving COVID-19 situation. As a result, the conference ...Il y a 4 ans
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COLLABORATE 20 Conference Converted to Digital Virtual Conferences - This year’s Oracle technology users groups COLLABORATE conference has been cancelled due to the evolving COVID-19 situation. As a result, the conference ...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 4 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 4 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 4 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 4 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 4 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 4 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 4 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 4 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 4 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 4 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 5 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 5 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 5 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 5 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 5 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 5 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 5 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 5 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 5 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 5 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 5 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 5 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 5 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 5 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 5 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 5 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 5 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 5 ans
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SQL Server Indexes best practices - SQL Server Indexes best practices Below are some of the SQL Server Indexes best practices or points to keep in mind while creating SQL Server Indexes. 1. A...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 6 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 6 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 6 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 6 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 6 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 6 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 6 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 6 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 6 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 6 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 6 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 6 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 6 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 6 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 6 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 6 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 7 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 7 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 7 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 7 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 7 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 7 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 7 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 7 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...
Il y a 7 ans -
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 7 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 7 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 7 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 7 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 7 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 7 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 7 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 7 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 7 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 7 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...
Il y a 8 ans -
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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jeudi 29 septembre 2011
jeudi 22 septembre 2011
Division par zéro fonctionne ??!!!!!
Deviner le résulat de la requête suivante :
SELECT 1 FROM DUAL WHERE EXISTS ( SELECT 1/0 FROM DUAL ) ;
On s'attend à :
Mais ça donne bien 1.
SELECT 1 FROM DUAL WHERE EXISTS ( SELECT 1/0 FROM DUAL ) ;
On s'attend à :
ORA-01476:
|
divisor is equal to zero
|
Cause:
|
An expression attempted to divide
by zero.
|
Action:
|
Correct the expression, then retry
the operation
|
Mais ça donne bien 1.
mardi 20 septembre 2011
dimanche 18 septembre 2011
Architecture d'une base des données Oracle
Ces deux tutoriels s’avèrent intéressants pour comprendre l'architecture d'une bases des données oracle.
samedi 17 septembre 2011
Grant sur les vues V$
J'ai essayé de donner le droit select à l'utilisateur oracle HR sur la vue v$session ,
grant select on v$session to hr;
j'ai reçu ce message ,
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