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Can't mount more than 50 databases per server after you upgrade to Exchange Server 2013 Cumulative update 2

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Symptoms

Consider the following scenario:
  • You are using Microsoft Exchange Server 2013 Enterprise Edition.
  • You upgrade Exchange 2013 servers from Cumulative Update 1 to Cumulative update 2.
  • You try to mount more than 50 databases on a Mailbox server.
In scenario, you receive the following error message:

Couldn't mount the database that you specified. Specified database: Test1; Error code: An Active
Manager operation failed. Error: The database action failed. Error: Operation failed with message:
MapiExceptionTooManyMountedDatabases: Unable to mount database. (hr=0x8004060e, ec=-2147219954)

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Resolution

To resolve this issue, make sure that the msExchMaxStoresTotal attribute on the CN=InformationStore container is set to 100. To do this, follow these steps:
  1. Click Start, and then click Run.
  2. In the Open box, type Adsiedit.msc, and then click OK.
  3. Right-click ADSI Edit, and then click Connect to.
  4. In the Select a well know Naming Context list, select Default naming context. In the Select or type a domain or server box, type the FQDN of a domain controller server, and then click OK.
  5. Expand to the path to the following:

    Configuration [DC.domain.com]; CN=Configuration, DC=domain, DC=com; CN=Services; CN=Microsoft Exchange; CN=<Your Organization>; CN= Administrative Groups; CN=<Exchange Org name>; CN=Servers; CN=<the Mailbox Server name>; CN=Information Store
  6. Right-click CN=InformationStore, and then click Properties.
  7. In the Attributes list, double-click msExchMaxStoresTotal, and then set the value to 100.
Note You must restart the Microsoft Exchange Information Store service for this change to take effect.

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More Information

Enterprise Edition can scale to 50 mounted databases per server in the RTM and Cumulative Update 1 (CU1) versions. And Enterprise Edition can scale to 100 mounted databases per server in Cumulative Update 2 (CU2) and later versions. For more information, see Exchange 2013: editions and versions.

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Keywords: kbsurveynew, kbtshoot, kbexpertiseinter, kb

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Article Info
Article ID : 2897047
Revision : 1
Created on : 1/7/2017
Published on : 12/9/2013
Exists online : False
Views : 180