Microsoft KB Archive/875499

= FIX: BizTalk Server 2004 may slow down when you use MSMQT to send messages =

Article ID: 875499

Article Last Modified on 2/20/2007

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APPLIES TO


 * Microsoft BizTalk Server 2004 Developer Edition
 * Microsoft BizTalk Server 2004 Enterprise Edition
 * Microsoft BizTalk Server 2004 Partner Edition
 * Microsoft BizTalk Server 2004 Standard Edition

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SYMPTOMS
Microsoft BizTalk Server 2004 may slow down when you use the Microsoft BizTalk Message Queuing Adapter (MSMQT) to send messages.



CAUSE
When an MSMQT instance terminates, the MSMQT instance does not always delete its subscription. These old subscriptions may generate unnecessary rows in the database. The unnecessary database rows may slow the system down.



Service pack information
To resolve this problem, obtain the latest service pack for Microsoft BizTalk Server 2004. For more information, click the following article number to view the article in the Microsoft Knowledge Base:

888751 How to obtain the latest BizTalk Server 2004 service pack

Hotfix information
The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in coordinated universal time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.   Date         Time   Version            Size    File name --  04-Aug-2004  21:53  3.0.5325.0        580,608  Btsmessageagent.dll Note Because of file dependencies, the most recent hotfix that contains these files may also contain additional files.



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section. This problem was corrected in BizTalk Server 2004 Service Pack 1.



MORE INFORMATION
This problem may occur if no MSMQT activity occurs for more than a day. An instance of the MSMQT service automatically terminates when the instance is inactive for more than 24 hours. Then, when an instance of the MSMQT service is restarted, an identical subscription is created, and an additional subscription record is left in the database.

