Reply to queue constraints when using a WebSphere MQ server

You use a WebSphere® MQ server to configure a direct (single bus) connection to a WebSphere MQ for z/OS® queue manager or queue sharing group. This topic describes the behavior and restrictions of the reply to queue message property when using a WebSphere MQ server. These restrictions apply when replying to a message using a WebSphere MQ application, such as an application developed using WebSphere MQ JMS.

When a message with a reply to destination is sent to a destination assigned to a WebSphere MQ server bus member, this is represented using the following WebSphere MQ MQMD fields:
  • MQMD reply to queue name is set to the name of the service integration destination specified as a reply to queue.
  • MQMD reply to queue manager name is set to the name of the service integration bus from which the message was sent.
In both cases, names which are not recognized by WebSphere MQ are truncated at the first character which is not a valid WebSphere MQ character, or at the WebSphere MQ limit on the field length.
This places the following restrictions on the situations in which a WebSphere MQ JMS application can successfully reply to a message sent from service integration.
  • The reply to destination name must be a valid WebSphere MQ queue name
  • The bus in which the reply to destination resides must have a name which is a valid WebSphere MQ queue manager name.
  • The reply to destination must reside in the same bus as the bus which originates the message.
  • There must be an MQ Link between the service integration bus and the WebSphere MQ network, over which the reply can flow.
  • The “virtual queue manager name” given to the MQ Link must match the service integration bus name to which the MQ Link leads.



Related tasks
Designing applications to interoperate with WebSphere MQ using a WebSphere MQ server
Concept topic    

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Last updated: Feb 19, 2011 5:25:36 AM CST
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