SCOM Event ID 6923 Generated

Question

Hello All,

In one of the very busy SQL server triggered an event id 623. As per Microsoft document the 623 event id will be triggered if the computer is managing many workflows. The solution MS suggesting to increase the version store size. We already increased the size to 10240( this is the max recommended size by Microsoft on Management servers).
MS says: a larger version store size requires additional memory to be allocated. Hence I am not in a position to increase the version store size more than 10240.Clearing of cache is not allowed.
I believe its not a good idea to increase the server memory for this issue.. Any suggestion would be helpful. How can i address this issue.

MS link: https://learn.microsoft.com/en-us/troubleshoot/system-center/scom/management-servers-devices-dimmed

Best Regards,
Anu

Answer 1

Hi Anu,

you need to analyses and identify how long it takes for the management server to get greyed out and until the event is being logged.
This behavior would in the most cases indicate that there is an issue with the sizing of the environment or that the servers are in the need of additional resources. What I would do:

- Increase the server resources (hardware requirements) as per:

System requirements for System Center Operations Manager
https://learn.microsoft.com/en-us/system-center/scom/system-requirements?view=sc-om-2019

- Do some performance optimizations.

I have summarized many of the possible configurations here:
System Center Operations Manager (SCOM) Management Group Performance Optimizations
https://social.technet.microsoft.com/wiki/contents/articles/53582.system-center-operations-manager-scom-management-group-performance-optimizations.aspx

Pay special attention to the application level performance optimizations (09, 10, 11 and 12).
09 is actually a suggestion, coming from Kevin Holman in form of registry based performance optimizations, which you should not forget.

- Last, but not least, in the article Microsoft says:

"If the HealthService is running lots of workflows, this registry value must be set even larger than the recommended size."

This means exactly this: you can set the value even higher if you have a large environment with many MPs (hence many workflows).

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Regards
Stoyan Chalakov