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Oracle disables your multitenant option when you run on EC2
I have installed Oracle 19.6 on an EC2 for our Multitenant Workshop training. And of course, during the workshop we create a lot of PDBs. If you don’t have paid for the Enterprise Edition plus the...
View ArticleA change in full table scan costs in 19c?
During tests in Oracle 19c I recently experienced this: cbleile@orcl@orcl> select * from demo4 where m=103; cbleile@orcl@orcl> select * from table(dbms_xplan.display_cursor); ......
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Oracle recovery concepts
I’ve published a while ago a twitter thead on some Oracle recovery concepts. For those who are not following twitter, I’m putting the whole thread here: Here I start a thread about some Oracle...
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Setup Oracle XE on Linux Mint – a funny exercise
On my old Laptop (Acer Travelmate with an Intel Celeron N3160 CPU) I wanted to install Oracle XE. Currently the available XE version is 18.4. My Laptop runs on Linux Mint 19.3 (Tricia). The Blog will...
View ArticleStarting an Oracle Database when a first connection comes in
To save resources I thought about the idea to start an Oracle database automatically when a first connection comes in. I.e. if there are many smaller databases on a server, which are not required...
View ArticleFind the SQL Plan Baseline for a plan operation
By Franck Pachot . If you decide to capture SQL Plan Baselines, you achieve plan stability by being conservative: if the optimizer comes with a new execution plan, it is loaded into the SQL Plan...
View Article“Segment Maintenance Online Compress” feature usage
By Franck Pachot . On Twitter, Ludovico Caldara mentioned the #licensing #pitfall when using the Online Partition Move with Basic Compression. Those two features are available in Enterprise Edition...
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Oracle Support: Easy export of SQL Testcase
By Franck Pachot . Many people complain about the quality of support. And there are some reasons behind that. But before complaining, be sure that you provide all information. Because one reason for...
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티베로 – The most compatible alternative to Oracle Database
By Franck Pachot . Do you remember that time where we were able to buy IBM PC clones, cheaper than the IBM PC but fully compatible? I got the same impression when testing Tibero, the TmaxSoft...
View ArticleTerraform and Oracle Cloud Infrastructure
Introduction When you learn a cloud technology, like OCI, the one from Oracle, you start building your demo infrastructure with the web interface and numerous clicks. It’s convenient and easy to...
View ArticleAPEX Connect 2020 – Day 1
This year the APEX connect conference goes virtual online, like all other major IT events, due to the pandemic. Unfortunately it spans only over two days with mixed topics around APEX, like JavaScript,...
View ArticleHandle DB-Links after Cloning an Oracle Database
By Clemens Bleile After cloning e.g. a production database into a database for development or testing purposes, the DBA has to make sure that no activities in the cloned database have an impact on data...
View ArticleAPEX Connect 2020 – Day 2
For the second and last virtual conference day, I decided to attend presentations on following topics: – Universal Theme new features – Oracle APEX Source Code Management and Release Lifecycle – Why...
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20c: AWR now stores explain plan predicates
By Franck Pachot . In a previous post https://blog.dbi-services.com/awr-dont-store-explain-plan-predicates/ I explained this limitation in gathering filter and access predicates by Statspack and then...
View ArticleOracle Database Appliance: which storage capacity to choose?
Introduction If you’re considering ODA for your next platform, you surely already appreciate the simplicity of the offer. 3 models with few options, this is definitely easy to choose from. One of the...
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Install & configure a Nagios Server
What is Nagios ? “Nagios is a powerful monitoring system that enables organizations to identify and resolve IT infrastructure problems before they affect critical business processes.”...
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Oracle Standard Edition on AWS ☁ socket arithmetic
By Franck Pachot . Note that I’ve written previously about Oracle Standard Edition 2 licensing before but a few rules change. This is written in May 2020. TL;DR: 4 vCPU count for 1 socket and 2 sockets...
View ArticleHow to use DBMS_SCHEDULER to improve performance ?
From an application point of view, the oracle scheduler DBMS_SCHEDULER allows to reach best performance by parallelizing your process. Let’s start with the following PL/SQL code inserting in serial...
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How to configure additional network card on an ODA X8 family
During a past project, we were using ODA X8-2M with one additional network card. As per my knowledge, on an appliance, additional cards are used to extend connectivity to additional network. Customer...
View ArticleIssue deleting a database on ODA?
I have recently faced an issue deleting database on an ODA. I was getting following error whatever database I wanted to delete : DCS-10001:Internal error encountered: null. Through this blog, I would...
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