Event ID 9037 and 1164

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Event ID 9037 and 1164

Symptom: In reviewing the Event Viewer, you may see following messages:

Event ID: 9037
Source: MSExchangeIS Private
Type: Error
Category: None
Description: No database session was available to satisfy a request. The registry value "SYSTEM\CurrentControlSet\Services\MSExchangeIS\ParametersPrivate\Sessions" may be set too low for the level of activity on this server.

and/or

Event ID: 1164
Source: MSExchangeIS Private
Type: Error
Category: None
Description: No database session was available to satisfy a request. The registry value "SYSTEM\CurrentControlSet\Services\MSExchangeIS\ParametersPrivate\Sessions" may be set too low for the level of activity on this server. The current value for this parameter is %1.

Resolution: These event IDs is caused by slow response times from calls made to JET by the information store. If you receive these event IDs, it is possible that the default information store opens 60 JET tables may not be adequate. You may need to increase the number of JET tables by adding the following registry setting under the HKEY_LOCAL_MACHINE subtree under the following subkey:

SYSTEM\CurrentControlSet\Services\MSExchangeIS\ParametersPrivate

1.	Highlight the ParametersPrivate key. From the Edit menu, select Add Value. Add Value Name of "Sessions" and select Data Type as REG_DWORD. Select OK. Add value of 70 in Data dialog box and select Decimal. Choose OK.
2.	Restart the MSExchangeIS and monitor for the 9037 Event ID. If this Event ID occurs again you will want to increase the sessions again until the error has been eliminated. Each Jet table that is opened will consume additional RAM on the machine so you will not want to configure this beyond what is necessary to avoid the error.