The L option for tracing

The L option writes messages and commands to an external TSO data set or CICS® data queue.

There are two L options you can choose:
Every QMF message is written to the QMF trace data output.
Every QMF message and command is written to QMF trace data output.
You can set the L option in one of two ways:
  • Issue the DISPLAY PROFILE command, and when the PROFILE is displayed, change the TRACE option to either L1 or L2.
  • Issue the command:
    In this statement, x is either L1 or L2.