If you need to restart the JVMs twice a week then there is almost certainly something wrong with the system e.g. memory/dbconnection leak.
https://www.linkedin.com/pulse/maximo-support-advice-from-non-ibm-engineer-article-mark-robbins/ - look at the articles in the
Managing MboSets – MBOSet overview - (#mbosetMgtPractices) series
If you aren't sure how to investigate it then reach out to me.
This series of articles put more information for the process as Martin describes it.
https://www.linkedin.com/pulse/maximo-support-advice-from-non-ibm-engineer-article-mark-robbins/
https://www.linkedin.com/pulse/websphere-consoles-jvm-started-doesnt-mean-maximo-has-mark-robbins/
https://www.linkedin.com/pulse/which-log-file-check-when-jvm-starts-up-key-mentioned-mark-robbins/
https://www.linkedin.com/pulse/log-entries-written-when-jvm-starts-up-part-1-mark-robbins/
https://www.linkedin.com/pulse/log-entries-written-when-jvm-starts-up-part-2-mark-robbins/
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mark robbins
Cohesive
IBM Champion 2017-2023 Inclusive
See my blog on Maximo support related topics here:
https://www.linkedin.com/pulse/maximo-support-advice-from-non-ibm-engineer-article-mark-robbins/------------------------------
Original Message:
Sent: 03-20-2024 11:24
From: Martin Fabra
Subject: What happens during a maximo restart?
Hi Trisha S!
This is very technical and a websphere specialist It might help to be more precise.
When you talk about restarting the JVM, I understand you mean shutting down the Maximo clusters. You proceed to reboot and then turn them on.
Every time you shut it down, it should end by shutting down the corresponding JVM.
What does it do when you do this? It will do the following (they are not ordered)
- Kill connections: With the DB, external services, integrations, users, etc.
- Kill processes: Stop processes (associated with CRONTASK)
- Kill report issuance: In progress, scheduled, etc.
This would stop the system completely and then free up system resources, mainly memory and processing usage (cores, subcores, and threads).
Restarting the server and clusters starts them in a staggered manner (as each cluster starts) until Maximo is fully operational.
I give you an idea. Take a test Maximo environment and activate administration mode. Just keep looking at the screen, and you will see that Maximo notifies you step by step of what it is doing.
Part of what re-initializing the Clusters would do is in that step by step. Then, the release of resources.
Regards!
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Martin Fabra
ARSAT S.A.
Original Message:
Sent: 03-15-2024 12:58
From: Trisha S
Subject: What happens during a maximo restart?
Hi,
Can someone explain what happens during a maximo jvm restart? I know how we do it( going to was and restart the jvms) but i want to know what happens in the background?
What can happen if we restart the servers frequently like 2 times a week or so?
Thanks in advance.
#EverythingMaximo
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Trisha S
Tcs
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