The CICS Transaction Gateway writes trace entries to the EXCI trace. Entries are in the CICS® trace EXCI format.
The trace entries in a dump can be printed using standard z/OS® utilities.
To start an EXCI trace from the administration interface:
/D OMVS,A=ALL
to display
OMVS tasks./DUMP COMM=(JGATE DUMP)
/R nn,ASID=aa,END
where nn is the message number for the reply, and aa is the ASID.See the System dumps section in the CICS Transaction Server for z/OS CICS External Interfaces Guide for information on how to format the trace.