Microsoft KB Archive/288700

= Information Store Dismounts and Stops =

Article ID: 288700

Article Last Modified on 10/25/2007

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APPLIES TO


 * Microsoft Exchange Server 2003 Enterprise Edition
 * Microsoft Exchange Server 2003 Standard Edition
 * Microsoft Exchange 2000 Server Standard Edition

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This article was previously published under Q288700



SYMPTOMS
The information store dismounts and starts referencing &quot;version store&quot; errors similar to the following event:

Event ID 623

Information Store (2356) The version store for instance 0 (&quot;ca192ae5-ad76-478e-8530-0b1756e7d28d&quot;) has reached its maximum size of 85Mb. 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: 0x111006E0

Session-context: 0x00000000

Session-context ThreadId: 0x00000B64

The Application log may also contain a series of MSexchangeIS events (#1022) and MSexchangeSA events (#9175).



CAUSE
When the Write Disk Caching (write-back caching on the hard drive) option is enabled for performance reasons, the Exchange server may encounter a JET or information store dismount and crash.



RESOLUTION
Restart the computer, and then disable the Write Disk Caching option. Write-back caching on a disk controller is acceptable so long as the controller has a battery backup; however, write-back caching on a physical disk can lead to JET-related issues in Exchange 2000.



STATUS
Microsoft has confirmed that this is a problem in Microsoft Exchange 2000 Server and Microsoft Exchange Server 2003.

Additional query words: exch2kp2w XADM

Keywords: kbbug kbpending KB288700

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