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Author Archives Lasse Jenssen

SQL Developer (ZIP) with OpenJDK on MacOS

This blogpost looks at installing SQL Developer (this blog looks at version 24.3.1) without Java bundled. Note! This is not supported by Oracle, so if trouble you are on your own. There is really no reason to actually do this, because SQL Developer is bundled with Oracle Java (which requires no licenses when – at […]

Posted 13 March 2025 § Mac § Oracle § SQL Developer ‡ Comments (0) ° Tagged: ,

Small test with FORALL SAVE EXCEPTIONS

This one I think I know the answer allready, but just wanted to test for sure.The question I asked myself is “When does FORALL SAVE EXCEPTIONS jump to the EXCEPTION clause?”. I’m pretty sure the answer is “After it completes the FORALL, and if – and only if – there are exceptions”.

Posted 11 February 2025 § Oracle § PL/SQL ‡ Comments (0) °

Script: Synchronizing sequences to max(value)

Today I needed to synchronise several sequences with the max(value) existing in the primary key column. I did a quick google search to see if I found a script which could do this for me, but didn’t find anything (well didn’t spend to long either). So I wrote a script instead.

Posted 16 January 2025 § DBA § Oracle § PL/SQL § Script ‡ Comments (0) °

Strange behavior with EBR II

This is an update on the previous article “Strange behavior with EBR“.To try to understand a little more I have tested some more. The result suggest that what’s inherited in my latest edition is actually not what I first thought (read last article). Let’s have a look.

Posted 10 September 2024 § DBA § Internals § Oracle § PL/SQL ‡ Comments (0) °

Strange behavior with EBR

I got some strange behavior with the Edition Based Redefinition feature this other day. I have 4 editions (RELEASE_1, RELEASE_2, RELEASE_3 and RELEASE_4). I create a package FOO with one procedure P1 in RELEASE_1. Then i recreate the package in RELEASE_2 adding a second procedure P2. Now I expect RELEASE_3 (and RELEASE_4) to have inherited […]

Posted 27 July 2024 § Oracle ‡ Comments (0) °

Testing solution to MERGE with sequence NEXTVAL

In my last blogpost (“Strange behavior in MERGE with sequence NEXTVAL”) I had a link to article written by Bob Jankovsky. In this article is suggest solving the issue with MERGE and nextvalue by returning the nextvalue from a function. In this blogpost I’ll do some tests and see how this behaves (regarding timings).

Posted 21 December 2023 § Oracle ‡ Comments (0) °

Strange behavior in MERGE with sequence NEXTVAL

Today we learned the following: “When using a sequence in a MERGE statement, the nextvalue is generated for all rows both updated and inserted (hence all rows in the source).” Our initial reaction was that this must be a bug, but is it really?

Posted 20 December 2023 § DBA § Internals § Oracle § Performance ‡ Comments (0) °

Scripts: Tanel Poder´s TPT script out on GitHub

Tanel Poder have uploaded his TPT script to GitHub. If you have never looked as his script I highly recommend spending some time on them. You’ll find them at: https://github.com/tanelpoder/tpt-oracle

Posted 28 June 2018 § Oracle ‡ Comments (0) °