The MQI call and user parameter, and GTF on z/OS

Use this topic to understand how to control the z/OS generalized trace facility (GTF) and IBM MQ trace.

We can obtain information about MQI calls and user parameters passed by some IBM MQ calls on entry to, and exit from, IBM MQ. To do this, use the global trace in conjunction with the z/OS generalized trace facility (GTF).

• Control the GTF on z/OS
  Use this topic to understand how to start and stop the z/OS generalized trace facility (GTF).
• Control the trace within IBM MQ for z/OS
  IBM MQ for z/OS trace is controlled using MQSC commands. Use this topic to understand how to control the trace, and the type of trace information that is output.
• Formatting and identifying the control block information on z/OS
  After capturing a trace, the output must be formatted and the IBM MQ control blocks identified.
• Interpreting the trace information on z/OS
  The GTFTRACE produced by IBM MQ can be examined to determine possible errors with invalid addresses, invalid control blocks, and invalid data.

Parent topic: Use trace for problem determination on z/OS