Downtime

OCW25 – Pre-Event Training: Mastering Oracle 23ai Upgrades

Posted on July 15, 2025 by Mike.Dietrich OCW OOW Workshop 0

Time flies so quickly. Soon we’ll get together again in Las Vegas for Oracle Cloud World 2025. This year, it will be in October where hopefully it’s a few degrees colder (or less hot) than in early September last year. And as in the past years, we’ll do at OCW25 – Pre-Event Training: Mastering Oracle 23ai Upgrades.

OCW25 - Pre-Event Training: Mastering Oracle 23ai Upgrades

Photo by Heather Gill on Unsplash

Will our pre-event training be different this year?

Of course, we won’t do the same training as we did in 2024. It will be a different training set with plenty of different exercises. …

Virtual Classroom Seminar 18: XTTS to the Extreme – Video and Slides and more

Posted on March 4, 2024 by Mike.Dietrich Transportable Workshop 2

Thanks for tuning in on Feb 22, 2024 into our Virtual Classroom Seminar 18: XTTS to the Extreme – Video and Slides and more are now available. And thanks for being such a great audience with so many questions.

Photo by Venti Views on Unsplash

Video Recording

As usual, you can access the full recording here.

Please find the entire contents section below in the video’s description. You don’t need to watch the entire seminar, you can also access only the sections you are interested in, or skip sections which are not on your focus.

00:08 – Welcome to

Virtual Classroom Seminar 18: Cross Platform Migration to the Extreme

Posted on February 19, 2024 by Mike.Dietrich Transportable Workshop 0

This week on Thursday, February 22, 2024 at 16:00h CET we’d like to invite you to our next Virtual Classroom Seminar 18: Cross Platform Migration to the Extreme. Take the chance to learn about the newest developments in cross-platform transportable tablespace migrations – and there is a lot to talk about.

Virtual Classroom Seminar 18: Cross Platform Migration to the Extreme

Photo by Venti Views on Unsplash

What will be the topics?

We’ll not only discuss but also demonstrate the newest developments and improvements in cross-platform migrations, especially for large and active databases. Learn about the new M5 migration scripts, see them in action – and get an idea …

Certifying an application on a specific RU-only is wrong

Posted on September 14, 2022 by Mike.Dietrich Best Practice Patch Recommendation Release Schedule 15

Well, there are still 80+ comments I need to answer and reply to on the blog. So please be patient – nothing gets deleted or ignored. But it happens that a topic crosses my inbox, and I need to blog about it right now. Today, it is a case where a customer asked me for advice, and mentioned on the side that they are going to 19.6.0 in OCI. In this relation I’d like to explain why Certifying an application on a specific RU- only is wrong.

Certifying an application on a specific RU only is wrong

Photo by Sigurdur Fjalar Jonsson on Unsplash

What’s the story?

At first, …

Upgrade Testing with a Refreshable PDB – does this work?

Posted on May 5, 2020 by Mike.Dietrich Single-/Multitenant 13

Yesterday, Daniel pinged me to discuss an upgrade testing scenario I had evaluated briefly by myself a while ago. I can’t remember why I gave up. But Daniel had some great ideas and tried already a lot in our OCI cloud. We want to use a refreshable PDB. And keep it up to date, then upgrade it. The idea of this approach: Whereas a CLONE or RELOCATE uses the initial command as the marker, a REFRESH would allow me to be way more in synch. So the question is: Upgrade Testing with a Refreshable PDB – does this work?

Upgrade Testing with a Refreshable PDB - does this work?

Photo

3 Live Seminars: Multitenant Seminar 3 Questions answered

Posted on May 3, 2020 by Mike.Dietrich Workshop 0

This is the third and final QA blog post for the Seminars we did in the last week of April 2020. Thank you for your attendance. I will publish the replay recordings as soon as they are available and link them as well. For now, please find here 3 Live Seminars: Multitenant Seminar 3 Questions answered.

3 Live Seminars: Multitenant Seminar 3 Questions answered

Photo by Holger Link on Unsplash

Your Questions, our Answers for Seminar 3: Multitenant

103	We are in the process of migrating to Oracle Cloud using the xtts method for cross platform migration and we seem to be encountering an issue with it

Upgrade PDBs with RELOCATE – How does it work?

Posted on January 30, 2020 by Mike.Dietrich Single-/Multitenant Upgrade / Migration 16

Today Roy and I received a question from a colleague about the RELOCATE feature in Multitenant. And I’d like to shed some light and this topic a bit more. Upgrade PDBs with RELOCATE – How does it work?

Upgrade PDBs with RELOCATE - How does it work?

Photo by Sebastian Pena Lambarri on Unsplash

RELOCATE and UPGRADE?

At first, it looks very promising to me. RELOCATE uses the HOT CLONE functionality of Multitenant but then relocates the PDB from one to another CDB. You need to fulfill a few important requirements, for instance:

Local Undo must be enabled in both CDBs
- This limits the technique to at least Oracle

Save Patching Downtime with Oracle Multitenant?

Posted on December 2, 2019 by Mike.Dietrich Best Practice Patch Recommendation Single-/Multitenant 8

At OOW 2019 we announced that you can have up to 3 user-created pluggable databases (PDBs) per container database (CDB) without having a Multitenant license. And in this blog post I’d like to demonstrate how you can save patching downtime with Oracle Multitenant.

The Concept

The idea this entire process settles on is very simple. When you create a fresh container database in the target (already patched!) environment, you don’t have to patch this one. You only have to relocate the PDB from the source into the target CDB. In addition, only datapatch needs to be executed. As the …

Database Migration from non-CDB to PDB – The Minimal Downtime Challenge

Posted on August 13, 2019 by Mike.Dietrich Minimal Downtime Single-/Multitenant 6

There are several pitfalls when you plugin a non-CDB into a CDB environment. I’d like to highlight some of them – and show you potential workarounds as well. This is part of a series of blog posts to make your migration from non-CDB to PDB a bit smoother.

Database Migration from non-CDB to PDB – The Minimal Downtime Challenge

When we start to look at a migration from non-CDB to PDB for an important system, regardless of migrating on-prem or to the cloud, reducing the downtime is very important. In this blog post I’d like to highlight the different aspects …

The OJVM Patching Saga – and how to solve it – Part V

Posted on February 16, 2017 by Mike.Dietrich JVM Patch Recommendation 5

Related Posts on
“The OJVM Patching Saga – and how to solve it“:

MOS Note released explaining patching without STARTUP UPGRADE mode

An important note regarding OJVM rolling patching has been published on MyOracle Support:

MOS Note: 2217053.1
RAC Rolling Install Process for the “Oracle JavaVM Component Database PSU” (OJVM PSU) Patches

“Beginning with the Jan2017 OJVM PSU patchset for 11.2.0.4 and

The OJVM Patching Saga – and how to solve it – Part IV

Posted on February 9, 2017 by Mike.Dietrich JVM Patch Recommendation 1

Related Posts on
“The OJVM Patching Saga – and how to solve it“:

What is missing with the “Mitigation Patch?

Michael, the team lead from a large Oracle customer mailed me the other day. He wanted to disable Java on all their +600 databases by using the Mitigation Patch for OJVM. But he received a strange error when trying to enable the …

The OJVM Patching Saga – and how to solve it – Part III

Posted on September 14, 2016 by Mike.Dietrich JVM Patch Recommendation 3

Related Posts on
“The OJVM Patching Saga – and how to solve it“:

What is the “Mitigation Patch?

In MOS Note:1929745.1 – Oracle JavaVM Component Database Patches there’s a section called What is the Mitigation Patch. It says:
“For situations where the latest OJVM PSU cannot be installed immediately there is a “Mitigation Patch” that can be used. The “Mitigation …

The OJVM Patching Saga – and how to solve it – Part II

Posted on September 6, 2016 by Mike.Dietrich JVM Patch Recommendation 4

Related Posts on
“The OJVM Patching Saga – and how to solve it“:

Important Notes

MOS Note: 1929745.1 – Oracle JavaVM Component Database Patches
MOS Note: 1940702.1 – Database JVM Vulnerabilities FAQ
MOS Note: 2165212.1 – What to do if the Database JAVAVM Component becomes INVALID After installing an OJVM Patch?
This Note contains a pretty detailed removal procedure for JAVAVM as

The OJVM Patching Saga – and how to solve it – Part I

Posted on September 5, 2016 by Mike.Dietrich JVM Patch Recommendation 20

Related Posts on
“The OJVM Patching Saga – and how to solve it“:

Who’s the Product Manager for Patching?

First of all, I’m neither a patching expert nor am I the Product Manager for Patching. There’s no such role as far as I know but there are people inside Oracle who have way more clue about this topic. There’s a group …

Save Upgrade downtime: Upgrade APEX upfront

Posted on June 6, 2014 by Mike.Dietrich APEX 5

Downtime

OCW25 – Pre-Event Training: Mastering Oracle 23ai Upgrades

Will our pre-event training be different this year?

Virtual Classroom Seminar 18: XTTS to the Extreme – Video and Slides and more

Video Recording

Virtual Classroom Seminar 18: Cross Platform Migration to the Extreme

What will be the topics?