Biztalk 2006 MQSC adapter

Hi,

In this post I will explain the benefit of the MQSC (WMQ native api client adapter) over MQS (COM+ server adapter).

When working with wmq and Biztalk on multi server environment I suggest to work with the MQSC adapter and not with MQS adapter.

Because of the following arguments:

• MQSC Support clustered MQSeries Queue Managers.
• The MQS adapter make subscriber for each clustered queue, even if it is the same
  queue, but on different qmgr. Creates duplication of messages.
  
• MQSC Support clustered BizTalk servers.
• You can't difine with the MQS adapter a dynamic recieve loaction. Works only with local Qmgr on the biztalk application server.
• The COM+ level overhead of the MQS adapter.
• Can define by WMQ channel table file a simple fail over mechanism, using the wild char "*" in the qmgr name.
  

You can get the inforamtion about the MQSC adapter here :

http://msdn2.microsoft.com/en-us/library/aa772116.aspx

When using the MQSC adapter it is very important to set the transaction mode on (default off ) when integrating with WMQ queus. Otherwise duplication of messages can occur.