In this post I want to share my experience while executing the upgrade of Oracle Enterprise Manager from 13.5 to 24ai.
As always. Please go ahead and read the Oracle documentation on how to upgrade EM to 24ai.
My EM demo environment was running EM 13.5 RU21 and the EM repository database 19c RU18. As per of the EM pre-reqs you need to be at least on EM13.5 RU22 and the DB needs to have the latest RU available.
So before even trying to upgrade, I needed to patch my EM. I decided to skip the patch but the UI is really good at reminding it.
So, I patched my EM to RU25 and the EM repository DB to RU26.
Let me execute the 24ai installer and follow the instructions.
Here I decided to upgrade my 13.5 environment instead of creating a new one.
There are 2 options though. Upgrade end-to-end or just install the binaries and proceed with the upgrade later.
NOTE: I chose end-to-end first, but ended going back and selecting the second option. The wizard gives a failure in the pre-reqs as it knows that RU 1 is already available for 24ai and you must install it before attempting the upgrade. I’ll share a MOS note on how to deploy it in subsequent steps.
I skipped the software updates.
Then the UI ran the pre-checks.
The pre-checks failed due the fact that 24ai RU1 needed to be applied.
I had to use below MOS note in order to apply RU1 with the bitonly option.
13.5: How to Apply Release Update on the OMS During the Install/Upgrade (Doc ID 2810169.1)
Select your new 24ai home location.
Type the EM repository connection details.
I performed to upgrade using the SYS DB account.
I had an issue with Plug-ins. My environment had 2 plug-ins deployed that are no longer supported in 24ai. I had to use EMCLI commands to un-deploy them.
After un-deploying the, I was able to continue.
I just proceed with the upgrade.
Now it’s time to run the ConfigureGC.sh script.
It asks for the system to be upgraded.
Type the EM repository connection details once again.
Select the DB user for the upgrade. In my case SYS was fine.
All the pre-reqs were successful. I selected the default EM ports and proceeded with the upgrade.
NOTE: The wizard will also upgrade the EM central agent. In previous EM upgrades that was a manual step.
It took about an hour for the wizard to complete.
Don’t forget to run the root.sh script on your new agent. I had an issue where EM was throwing a weird error while connecting to DBs.
Failed to ascii decode encrypted-text (status=1) After EM Upgrade (Doc ID 2655512.1)
After that, EM 24ai RU1 is up and running.
Hope that you find this post useful.
Thanks,
Alfredo