The MSExchangeFDS.exe process occupies lots of memory if there are thousands of OABs created on an Exchange Server 2007 server

Article ID: 2028675 - View products that this article applies to.
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SYMPTOMS

You have thousands of Offline Address Books (OABs) that are created on a Microsoft Exchange Server 2007 server. In this situation, the Microsoft Exchange File Distribution service (MSExchangeFDS.exe) occupies lots of memory. This behavior may affect the performance of other services. For example, the response to the client will be slower than expected.
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CAUSE

This problem occurs because Exchange Server 2007 maintains the OAB list that includes thousands of objects in the memory. With additional OABs, the memory consumption of the MSExchangeFDS.exe process increases significantly.
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RESOLUTION

To resolve this issue, install the following update rollup: 
2407025
(http://support.microsoft.com/kb/2407025/ )
Description of Update Rollup 2 for Exchange Server 2007 Service Pack 3
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STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
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Properties

Article ID: 2028675 - Last Review: December 14, 2010 - Revision: 1.0
APPLIES TO
  • Microsoft Exchange Server 2007 Service Pack 3, when used with:
    • Microsoft Exchange Server 2007 Enterprise Edition
    • Microsoft Exchange Server 2007 Standard Edition
Keywords: 
kbqfe kbfix kbsurveynew kbhotfixrollup kbexpertiseinter KB2028675
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