Ping is useful in determining whether the communication link and the two message channel agents that make up a message channel are functioning across all interfaces.
Ping makes no use of transmission queues, but it does invoke some user exit programs. If any error conditions are encountered, error messages are issued.
To use ping, you can issue the MQSC command PING CHANNEL (you cannot do this if you are using CICS for distributed queuing on z/OS). On z/OS and iSeries, you can also use the panel interface to select this option.
On UNIX platforms, OS/2, Windows, and iSeries, you can also use the MQSC command PING QMGR to test whether the queue manager is responsive to commands. See the WebSphere MQ Script (MQSC) Command Reference for more information about this.