The CICS adapter

 

 

Note to users

If you are using the CICS adapter from a WebSphere MQ for z/OS system, ensure that CICS can obtain sufficient storage to accommodate messages up to 100 MB long.

A CICS system can have only one connection to a WebSphere MQ for z/OS queue manager, and this connection is managed by the WebSphere MQ for z/OS CICS adapter. The CICS adapter provides access to WebSphere MQ for z/OS resources for CICS programs.

In addition to providing access to the MQI calls, the adapter provides:

• A trigger monitor (or task initiator) program that can start programs automatically when certain trigger conditions on a queue are met. For more information, see Starting WebSphere MQ applications using triggers.

• An API-crossing exit that can be invoked before and after each MQI call. For more information, see The API-crossing exit for z/OS.

• A trace facility to help you when debugging programs.

• Facilities that allow the MQI calls to be executed under multiple z/OS TCBs. For more information, see the WebSphere MQ for z/OS Concepts and Planning Guide.

• CICS adapter performance considerations
  

• Adapter trace points
  

• Abends
  

• Using the CICS Execution Diagnostic Facility
  

 

Parent topic:

The WebSphere MQ for z/OS interface with the application environment

fg15160_