Debugging your callable interface applications

QMF provides two trace options, L and A, and various levels of trace detail for debugging your applications.

The L option for tracing
The L option writes messages and commands to an external TSO data set or CICS® data queue.
The A option for tracing
You can use the A option to specify a level of tracing for QMF application support services.
Turning the tracing off
To turn tracing off, use the SET PROFILE command.
Allocating the QMF trace data output
You must allocate the QMF trace data output before you start QMF if tracing is to be used.
The QMF MESSAGE command for tracing
You can use the QMF MESSAGE command to do more than display a message when an application ends. You can also use it to record messages in the QMF trace data output.

Parent topic: Debugging your QMF applications

Related information

Getting the right level of detail in your trace output