Health Service Store: The version store for this instance has reached its maximum size of xx Mb

SYMPTOMS

In a Microsoft System Center Operations Manager 2007 environment, one or more management servers that host the following roles, together with those management servers' managed devices, may appear dimmed or grayed out in the Operations Console:

• Root Management Server
• Management Server
• Gateway Server
• Agent

Additionally, an event that resembles the following is logged in the Operations Manager log on these computers:

Event Type: Error
Event Source: ESE
Event Category: Transaction Manager
Event ID: 623
Description: HealthService () The version store for instance ("") has reached its maximum size of Mb. It is likely that a long-running transaction is preventing cleanup of the version store and causing it to build up in size. Updates will be rejected until the long-running transaction has been completely committed or rolled back. Possible long-running transaction:
SessionId:
Session-context:
Session-context ThreadId: .
Cleanup:

RESOLUTION

Important This section, method, or task contains steps that tell you how to modi...

Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:

322756 (http://support.microsoft.com/kb/322756/ ) How to back up and restore the registry in Windows

To resolve the problem, apply the following registry setting on the computers that host the affected roles:

Subkey: HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\HealthService\Parameters
Type: REG_DWORD
Name: Persistence Version Store Maximum
Value: Number of 16-kilobyte pages
Base: Decimal

The default size of the version store depends on the Operations Manager role and is defined as the number of 16-kilobyte pages to allocate in memory. The default values are as follows:

• Agent (workstation operating systems): 640 (10 megabytes)
• Agent (server operating systems): 1920 (30 megabytes)
• Management Server: 5120 (80 megabytes)

If you experience this problem, we recommend that you set the version store size to double its default size. For example, if you set the version store size on a computer that hosts a Management Server role, set the registry value to 10240 (decimal).

After you apply the registry change, restart the HealthService service.

Notes

• A larger version store size requires additional memory to be allocated.
• If the HealthService is running lots of workflows, this registry value must be set even larger than the recommended size.