Microsoft KB Archive/314736

= XADM: Event Viewer Log Entries Cite Virtual-Memory Fragmentation on an Exchange 2000 Server =

PSS ID Number: 314736

Article Last Modified on 6/5/2003

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The information in this article applies to:


 * Microsoft Exchange 2000 Server

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This article was previously published under Q314736



SYMPTOMS
While you are administering an Exchange 2000 Server that runs Service Pack 1, the following events may appear in the Application log of Event Viewer:

Event ID: 9582

Source: MSExchangeIS

Category: Performance

Event Type: Error

Description: The virtual memory necessary to run your Exchange server is fragmented in such a way that normal operation may begin to fail. It is highly recommended that you restart all Exchange services to correct this issue.

Event ID: 9582

Source: MSExchangeIS

Category: Performance

Type: Warning

Description: The virtual memory necessary to run your Exchange server is fragmented in such a way that performance may be affected. It is highly recommended that you restart all Exchange services to correct this issue.



CAUSE
This issue can occur if the /3GB switch in the Boot.ini file is used incorrectly on a server that runs Exchange 2000 Server.



RESOLUTION
To resolve this issue, take one of the following actions, depending on which type of server you are running:
 * If your server is running Microsoft Windows 2000 Server, remove the /3GB option from the Boot.ini file.
 * If your server is running Microsoft Windows 2000 Advanced Server and has more than 1 gigabyte (GB) of RAM, make sure that the Boot.ini file contains the /3GB switch.



MORE INFORMATION
The /3GB switch can have a significant effect on memory fragmentation and even contribute to memory fragmentation on a server that runs Windows 2000 Server (but not on a server that runs Windows 2000 Advanced Server or Microsoft Windows 2000 Datacenter Server). You should not use this switch with Windows 2000 Server. Regardless of whether the switch is in use, however, memory fragmentation can still occur with the passage of time.

For additional information about the /3GB switch in relationship to Exchange 2000 Server, click the article number below to view the article in the Microsoft Knowledge Base:

266096 Exchange 2000 Requires /3GB Switch with More than 1 Gigabyte of Physical RAM

Keywords: kbenv kberrmsg kbprb KB314736

Technology: kbExchange2000Search kbExchange2000Serv kbExchange2000ServSearch kbExchangeSearch

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