Microsoft KB Archive/936125

= How to provide high availability for the MQSAgent COM+ application or for the MQSAgent2 COM+ application in a clustered environment =

Article ID: 936125

Article Last Modified on 4/20/2007

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APPLIES TO


 * Microsoft BizTalk Server 2006 Developer Edition
 * Microsoft BizTalk Server 2006 Enterprise Edition
 * Microsoft BizTalk Server 2006 Standard Edition
 * 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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INTRODUCTION
Consider the following scenario. In Microsoft BizTalk Server 2006 and in Microsoft BizTalk Server 2004, you use the BizTalk Adapter for MQSeries adapter to connect to a clustered IBM WebSphere MQ Server-based server. The clustered IBM WebSphere MQ Server-based server hosts the MQSAgent Microsoft COM+ application or the MQSAgent2 COM+ application. In this scenario, you should not provide high availability by clustering the MQSAgent COM+ application or the MQSAgent2 COM+ application.

Note In BizTalk Server 2006, the MQSAgent COM+ application is named the MQSAgent2 COM+ application.



MORE INFORMATION
To provide high availability for the MQSAgent COM+ application or for the MQSAgent2 COM+ application in a clustered environment, you must install the COM+ application locally on each cluster node. Do not cluster this component. If the COM+ application stops for any reason, the next call to the COM+ application from BizTalk Server automatically restarts the COM+ application. This behavior makes sure that you provide high availability without clustering this component.

