Before you start WebSphere MQ

After you have installed WebSphere MQ, it is defined as a formal z/OS subsystem. This message appears during any initial program load (IPL) of z/OS:

CSQ3110I +CSQ1 CSQ3UR00 - SUBSYSTEM ssnm INITIALIZATION COMPLETE

where ssnm is the WebSphere MQ subsystem name.

From now on, we can start the queue manager for that subsystem from any z/OS console that has been authorized to issue system control commands; that is, a z/OS SYS command group. You must issue the START command from the authorized console, we cannot issue it through JES or TSO.

If you are using queue-sharing groups, start RRS first, and then DB2, before you start the queue manager.