September 2023 version of AutoUpgrade is available

It’s time again – and the new September 2023 version of AutoUpgrade is available for download to you.

Where to download it?

As usual, the MOS Note: 2485457.1 offers you access to the new release, and to the previous versions of the tool as well. This new version will show the following version information:

java -jar autoupgrade.jar -version

build.version 23.4.230921 2023/09/21 14:43:05 -0400
build.hash 165be072
build.hash_date 2023/09/21 13:05:52 -0400
build.supported_target_versions 12.2,18,19,21
build.type production
build.label (HEAD, tag: v23.4, origin/stable_devel, stable_devel)

This version will be also included in the Jan 2024 RU, 19.22.0, but not …

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Oracle Database 19.10.0 and Blockchain Tables and COMPATIBLE

Many of you recognized that we delivered a new feature with Oracle Database 19.10.0, the January 2021 Release Upgrade. So I’d like to put a few interesting things together from the upgrade and migration perspective regarding Oracle Database 19.10.0 and Blockchain Tables and COMPATIBLE.

What are Blockchain Tables?

At first, I don’t want to repeat what other people have blogged and written about already. You may just go through the blog posts of Connor McDonald and Tim Hall and others to learn more about this cool feature.

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JDK patching happens with every RU since January 2020

A while ago, a customer asked me whether he needs to apply JDK patches separately. He discovered that the JDK in the $ORACLE_HOME is quite outdated. But there was no clear answer available. And the MOS Note he pointed me to, seemed to be quite incomplete. But times have changed. And JDK patching happens with every RU since January 2020.

JDK patching happens with every RU now

Photo by David Billings on Unsplash

JDK who?

JDK stands for Java Development Toolkit. As the Wikipedia article explains, “the JDK includes a private JVM and a few other resources to finish the development of a Java Application”. …

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Minimum Supported Version for Database Upgrades

This question comes up very often: What is the minimum supported version for database upgrades? Or a question I received today: “I have an Oracle database, can I upgrade directly to Oracle”

Usually I have to dig into my old slides from the past to give a definite answer. And of course, the Database Upgrade Guide of each version has the same information somewhere as well. Therefore I’d like to summarize the releases supported for direct database upgrades since Oracle below.


When I speak about database upgrades, I mean you’ll use either the command line

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Is your APEX version certified with your Database release?

+++ Blog post updated on Oct 2, 2019 +++ New additions marked in Red +++

+++ Blog post updated on Aug 3, 2021 +++ New additions marked in Blue +++

Last week I’ve had an interesting discussion with a customer about the certification of APEX and Oracle Database

I did a bit of research and emailing – and thanks to the APEX team – this is the source of truth for APEX certifications.

Is your APEX version certified with your Database release?

Minimum Database version for APEX

See MOS Note:1344948.1: Application Express (APEX) Database and Web Server Certification Reference:

  • For APEX 4.0, the minimum database version is
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