OCW

GI 19.31 and 19.32: trace file flooding in mgmtca.trc can happen

Thanks to Peter Lehmann who always alerts me about findings and encounters he had in his test and production RAC cluster environments. Peter dropped me an email the other day, and I share his suspicion that this may effect many in the coming weeks operating RAC environments. If you don’t have a RAC, you may not see this happening with GI 19.31 and 19.32: trace file flooding in mgmtca.trc can happen.

GI 19.31 and 19.32: trace file flooding in mgmtca.trc can happen

Photo by Giovanna Gomes on Unsplash

What happens?

It took me a bit of searching, and Peter collected a lot of information already.

Two months after patching GI …

Grid Infrastructure: Bye Tomcat – welcome Micronaut

Posted on May 19, 2026 by Mike.Dietrich Installation OCW Oracle AI Database 26ai Oracle Database 19c 14

Anil Nair wrote it in his MAA Blog Post on April 28: “Oracle is simplifying the software stack by replacing Apache Tomcat application server with Micronaut framework.”. And since some of you asked already, let me give you a bit more information about this change in 19.30 and 19.31 with Grid Infrastructure: Bye Tomcat – welcome Micronaut.

Grid Infrastructure: Bye Tomcat - welcome Micronaut

Photo by Hayrullah Gozcu on Unsplash – and I know, the jet in the picture isn’t an F-14 Tomcat 🙂

It happens automatically

At first, no action is needed from your side. This behavior change happens automatically.

It is the …

OCW 19.28 contains a tiny behavior change with DB_UNIQUE_NAME

Posted on March 18, 2026 by Mike.Dietrich Behavior Change OCW 0

A colleague brought this to my attention the other week. And since the blog serves also as my partial memory, I wanted to put this out quickly. It is not a big deal, and most of you will never see this or be affected by it. Still, some may need to be aware that OCW 19.28 contains a tiny behavior change with DB_UNIQUE_NAME.

OCW 19.28 contains a tiny behavior change with DB_UNIQUE_NAME

Photo by Anton Ryazanov on Unsplash

What has happened?

In the Oracle Clusterware (OCW) Release Update (RU) 19.28 and onward you will find a fix for Bug 34966087 – AH: CRS: FAIL START ACTION IF DB …

Oracle AI World 2025: Your guide to Upgrade, Migration and Patching Sessions

Posted on September 18, 2025 by Mike.Dietrich OOW 0

Oracle OpenWorld had been renamed to Oracle CloudWorld, and it got rebranded to Oracle AI World this year. And we PMs, Alex, Daniel, Rodrigo and myself look forward to see you there. It’s a perfect opportunity to touch base, discuss your migration challenges, your patching fun – and upgrades certainly, too. You not only can grab a sticker for your laptop lid but we’d love to hear about your experiences, wishes and pain points (if there are any) first hand.

Oracle AI World 2025: Your guide to Upgrade, Migration and Patching Sessions

And of course, we want you to come to our sessions. As usual, we’ll bring real stuff making …

AutoUpgrade patching – getting started with Connor McDonald

Posted on August 12, 2025 by Mike.Dietrich AutoUpgrade Patch Recommendation 24

AIOUG OC Yatra 2025 is over, and I somehow recovered as well. As I wrote here, it was (again) an incredible experience with all those wonderful people (you!!) and those crazy speakers (us!) – and I learned a lot again. Still, I had no clue that Database and Developer evangelist and video wizard Connor McDonald would react to my friendly nagging 🙂

AutoUpgrade patching - getting started with Connor McDonald

Photo by Graham Holtshausen on Unsplash

Have you used AutoUpgrade before?

If you say “No, not really“, then this video is for you. See how Connor dives into AutoUpgrade which he had never used before.…

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. …

OCW24: Upgrade, Migrations and Patching to Oracle Database 23ai

Posted on August 14, 2024 by Mike.Dietrich OCW OOW 0

Oracle Cloud World 2024 is near – in hot Las Vegas. Luckily, the hotel and conference areas are all air-conditioned. Good thing: You have another reason to enjoy the cold inside, and come to our talks and labs. Let me give you a quick overview, why we are so much looking forward to see you at OCW24: Upgrade, Migrations and Patching to Oracle Database 23ai sessions, labs and more.

Photo by Isaac Davis on Unsplash

Pre-Event Training: Multitenant Upgrade 23ai

You can book yourself a full-day pre-conference training on Monday, September 9. We’ll host a small group of …

Oracle Cloud World 2024 in London

Posted on March 7, 2024 by Mike.Dietrich OCW OOW Workshop 0

Next week it’s Oracle Cloud World 2024 in London. And I hope to see you there. It is a perfect spot to get the latest tech updates but also to meet and synch and discuss.

Not registered yet?

Registration to Oracle Cloud World 2024 in London on March 14, 2024

In addition, there is a DevLive event the day before with about 40 separate sessions.

Upgrade to Oracle Database 23c talk?

Would love to see you there. But certainly there are so many other great sessions. Check out the session catalog, and choose the ones you are the …

Your Upgrade / Migration / Patching Guide for OCW23

Posted on September 18, 2023 by Mike.Dietrich OOW 8

Thanks for using this blog post. It will be your Upgrade / Migration / Patching Guide for OCW23. You will find the slide decks to download, the coming talks, the HOL as well as the survey links and other important sources. We wil update it every day throughout the conference. If you have questions, please use the “Comment” option below the blog post. And we won’t post content BEFORE the session but instead AFTER the sessions.

Your Upgrade / Migration / Patching Guide for OCW23

All you need, day by day

Please find – grouped day by day – each of our talks with the survey links and …

MRP3 for Oracle 19.17.0 adds an interesting surprise

Posted on January 30, 2023 by Mike.Dietrich Flaws and Pitfalls Patch Recommendation 9

You may have read my previous blog posts about MRPs (Monthly Recommended Patches). And today I did a quick check with Rodrigo. We both were a bit surprised to have the MRP3 for 19.17.0 add a lot of fixes to a standard RDBMS installation. So we were investigating a bit further. As a teaser, read on to see that MRP3 for Oracle 19.17.0 adds an interesting surprise.

MRP3 for Oracle 19.17.0 adds an interesting surprise

Photo by David Brooke Martin on Unsplash

How did we find out?

The MRP3 for Oracle Database 19.17.0 got released just a week ago. You can navigate to it via MOS …

Oracle Cloud World 2022 – Recap and Slides

Posted on October 25, 2022 by Mike.Dietrich OOW 4

This was a wonderful but very strenuous week, no doubt. Oracle Cloud World (OCW) 2022 happened in Las Vegas. New name, new city. And even though many agreed to prefer San Francisco with an Oracle Open World instead having such an event in Sin City, there were a lot of great things happening. So let me start my personal summary here, the Oracle Cloud World 2022 – Recap and Slides.

Oracle Cloud World 2022 - Recap and Slides

Our labs and talks

It was amazing to see you all in our 4 sessions, 4 labs and 2 lightning talks. Since the registration process was a bit …

OCW 2022 – Your Upgrade / Migration / Patching Track to Success

Posted on October 11, 2022 by Mike.Dietrich Conference OOW 2

Will you come to Oracle Cloud World (tcfkaOOW = the conference formerly known as Oracle Open World) 2022 in Las Vegas in the week from October 17-20, 2022? Then we hope to see you there. And we certainly hope to meet you. So in case you are looking for our technical talks and sessions at OCW 2022 – Your Upgrade / Migration / Patching Track to Success.

OCW 2022 – Your Upgrade / Migration / Patching Track to Success

Your Upgrade / Migration / Patching Track at OCW2022

As usual our promise stands.

Zero marketing. Just pure tech.

And we our proud to have lots of real …

Oracle Cloud World 2022 – Database Upgrade and Patching Labs

Posted on September 28, 2022 by Mike.Dietrich OOW 2

Oh … it’s just a few weeks left until Oracle Cloud World 2022 will start on Oct 17, 2022 in Las Vegas. If you have some final doubts whether you should go or not, let me tell you that it’s like Oracle Open World just under a different name. And in a different place. But with the same cool people and many great talks. Take the chance to meet the developers, their managers and the product managers behind the features you daily use – or miss. We’ll be there – and this is YOUR chance now to sign up for …

OC YATRA Tour 2022 – It was a blast. Or: Why conferences are so important

Posted on August 22, 2022 by Mike.Dietrich Conference 0

For a change, this isn’t a Monday morning rant. Instead, it is the opposite. It’s a summary of my late July trip to India to OC YATRA Tour 2022 – It was a blast. Or: Why conferences are so important.

OC YATRA Tour 2022 - It was a blast. Or: Why conferences are so important

OC YATRA 2002 – India, Begaluru, Sunday, July 24, 2022

How did it start?

Months ago, Sai Penumuru and the AIOUG organizers asked whether I’d be willing to come to India for the 2022 Oracle Community YATRA tour. The last time it happened – before the world knew about Covid – Roy was traveling and doing part of the …

Patching all my environments with the April 2022 Patch Bundles

Posted on April 25, 2022 by Mike.Dietrich Patch Recommendation 37

Easter time is patching time. And since I was hiking and biking every day the last week up in the Northern Italian mountains, this blog post is coming with a slight delay. But better late than never. Time to show you my usual exercise, this time Patching all my environments with the April 2022 Patch Bundles.

Patching all my environments with the April 2022 Patch Bundles

Photo by National Cancer Institute on Unsplash

As usual, an important annotation upfront: I patch in-place due to space issues. But in reality, you please patch always out-of-place with a separate home. Please see this blog post about how to apply the RU …

Adding the Oracle 19.14.0 OCW / GI bundle patch to my database home

Posted on February 7, 2022 by Mike.Dietrich Patch Recommendation 16

Actually I planned for a different blog post this morning. But since I have a backlog of unanswered comments accumulated I came across this interesting question from Pedro. He wanted to know how he can patch the OCW component in his database home. So I thought I will show you the process of Adding the Oracle 19.14.0 OCW / GI bundle patch to my database home.

Adding the Oracle 19.14.0 OCW / GI bundle patch to my database home

Photo by Barthelemy de Mazenod on Unsplash

Is this necessary?

That’s a good question for a Monday morning. I think: No, that isn’t necessary for a “Database only” home where you don’t have or …

AutoUpgrade may run into a timeout when GI is lower than 19.10.0

Posted on June 21, 2021 by Mike.Dietrich ASM / RAC / GI Patch Recommendation 9

The other day I received a question from a colleague about the risk of having GI and database both not being on the same RU. And a long while ago I blogged about it. We recommend that you keep it in synch. But you don’t have to. At the same time I received a wish from Ernst Leber to post something on the blog he and his colleague had trouble with when upgrading to 19c in a RAC environment. AutoUpgrade hung. But he titled his email with “not an AutoUpgrade problem!”. Still I agree, it is worth to write …

ORA-29702 – and your instance does not startup in the cluster anymore

Posted on November 13, 2020 by Mike.Dietrich ASM / RAC / GI Flaws and Pitfalls Patch Recommendation 11

This is the right blog post for a Friday 13th. And please forgive me – I wanted to put this on the blog earlier as two of my customers hit this weeks ago already. But it must have fallen through the cracks. Still, now it is hopefully not too late to tell you what you should do if you hit ORA-29702 – and your instance does not startup in the cluster anymore. Especially when you tested a database upgrade – and after a restore, the database doesn’t want to start, no matter what you try.

ORA-29702 - and your instance does not startup in the cluster anymore

Photo by Nadine Shaabana

Which database version can be used with Grid Infrastructure 19c?

Posted on October 6, 2020 by Mike.Dietrich ASM / RAC / GI 25

This will be a very short blog post today. But a colleague asked me this question just a few minutes ago: Which database version can be used with Grid Infrastructure 19c? And I realized that I neither put it on the blog yet nor did I bookmark it. But I answered this question several times already.

Photo by Sincerely Media on Unsplash

Which database version can be used with Grid Infrastructure 19c?

There are 4 sources I did check:

MOS Notes on MyOracle Support
Oracle Documentation
Certification Information on MyOracle Support
Database Upgrade Blog

At first, I answered with MOS …

Does your GI RU/RUR patch level has to match your database’s?

Posted on June 11, 2020 by Mike.Dietrich ASM / RAC / GI 5

A long while ago I blogged about whether you should keep your patch versions between Grid Infrastructure and Databases Homes in synch, or not. And today, Daniel dropped me a note mentioning that this old blog post may need an update for 18c/19c. He’s right. And as I’ve had trouble finding my old blog post, I title this one a bit more obvious: Does your GI RU/RUR patch level has to match your database’s?

Does your GI RU/RUR patch level has to match your database's?

Photo by Vincent van Zalinge on Unsplash

Before Oracle Database 18c

Since Oracle 18c we move from a 5-number release schema to a 3-number one. …

Of course, Oracle Clusterware is certified on OL8/RHEL8 as well

Posted on May 14, 2020 by Mike.Dietrich Operating System 39

To be very honest, when I posted a few days ago, Oracle Database 19c is certified on OL8/RHEL8 I didn’t check for the Oracle Clusterware (OCW) certification. I blindly assumed that this is the case. But from comments and discussions on twitter, I realized it may be necessary to point this out explicitly to avoid confusion. Even though my fellow mate, RAC Product Manager Anil Nair has pointed it out already many times: Of course, Oracle Clusterware is certified on OL8/RHEL8 as well.

Of course, Oracle Clusterware is certified on OL8/RHEL8 as well

Photo by Angela Hobbs on Unsplash

Find it on MOS

Your source for certification information …

AutoUpgrade – New Version with RAC Database Upgrade Support

Posted on April 1, 2020 by Mike.Dietrich ASM / RAC / GI AutoUpgrade 32

Thanks to all our customers who participated in our evaluation test for RAC upgrade support with the AutoUpgrade Tool. And my colleagues worked hard to deliver the new version as quickly as possible. Just to make sure: This is not an April’s fools blog post. Since 2 days, you can download AutoUpgrade – New Version with RAC Database Upgrade Support.

AutoUpgrade - New Version with RAC Database Upgrade Support

Picture by: Jason Yuen on Unsplash

Where to download it?

As usual, you can download the newest version – in this case 19.8 aka 20200327 from MOS Note: 2485457.1:

You simply copy the new version into your 19c (or …

GI Patch 28553832 may be needed before you upgrade to 19c

Posted on January 7, 2020 by Mike.Dietrich ASM / RAC / GI Flaws and Pitfalls 11

Thanks to my colleague Sebastian Alasino who works in the MAA team out of the UK. Sebas highlighted this issue to. And I’d like to share it with you when you attempt to upgrade Grid Infrastructure to Oracle 19c. If you have the Docker RPM installed and you were lazy on patching, then GI Patch 28553832 may be needed before you upgrade to 19c.

GI Patch 28553832 may be needed before you upgrade to 19c

Photo by Daniel Frank on Unsplash

What is the issue?

If the Docker Engine RPM is installed and your GI version is 12.1.0.2, 12.2.0.1 or 18c below a certain patch level, the CSSD demon fails to …

OCW

What happens?

It happens automatically

What has happened?

Have you used AutoUpgrade before?

Will our pre-event training be different this year?

Pre-Event Training: Multitenant Upgrade 23ai

Not registered yet?

Upgrade to Oracle Database 23c talk?

All you need, day by day

How did we find out?

Our labs and talks

Your Upgrade / Migration / Patching Track at OCW2022

How did it start?

Is this necessary?

Which database version can be used with Grid Infrastructure 19c?

Before Oracle Database 18c

Find it on MOS

Where to download it?

What is the issue?

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