Symptoms
Consider the following scenario:
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You use the Microsoft BizTalk MQSeries Client adapter (MQSC) that is included in Microsoft Host Integration Server.
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You use the client-based MQSC Adapter Send ports to send messages.
In this scenario, the Send ports may be slow. This problem may be especially serious when messages are sent over high latency networks.
Cause
This issue occurs because the MQSC adapter works as single-threaded in Send scenarios. The adapter waits for an Acknowledgment (ACK) packet for the current Send operation before the adapter continues with the next Send operation.
Resolution
Microsoft Host Integration Server 2010
The hotfix that resolves this issue is included in cumulative update package 2 for Host Integration Server 2010.
For more information about how to obtain the cumulative update package, click the following article number to view the article in the Microsoft Knowledge Base:
2616519 Cumulative update package 2 for Host Integration Server 2010
Microsoft Host Integration Server 2009
The hotfix that resolves this issue is included in cumulative update package 2 for Host Integration Server 2009.
For more information about how to obtain the cumulative update package, click the following article number to view the article in the Microsoft Knowledge Base:
2645939 Cumulative update package 2 for Host Integration Server 2009
Status
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
More Information
This fix enables you to specify the maximum number of concurrent connections within the MQSC Send Handler properties. The default limit is 10 connections.
