Capturing the trace

If you use only the internal buffer, you must obtain a dump of TCP/IP to view the CTRACE records. It is usually a good idea to also capture the application address space. For example, using the MVS™ DUMP command, type the following commands.

Tip: The SDATA options specified are appended to other options.

The SDATA options shown here are the generally recommended options.

DUMP COMM=(Sample dump for SOCKAPI)
R n,JOBNAME=(tcpiproc,ezasokjs),CONT 
R n,SDATA=(ALLNUC,CSA,LPA,LSQA,RGN,SWA,SQA,TRT),CONT 
R n,END

Notes:

You can type the first three commands in advance, and you can then just type the fourth command at the correct moment to capture the events.
If you use the external writer, External writer, explains how to capture the trace in a data set.