CTnBPXxx parmlib member

The following table indicates the parameters you can specify on a CTnBPXxx parmlib member.

Parameters	Allowed on CTnBPXxx?
ON or OFF	Yes
ASID	Yes
JOBNAME	Yes – see note
BUFSIZE	Yes – see note
OPTIONS	Yes
SUB	No
PRESET	No
LIKEHEAD	No
WTR	Yes
WTRSTART or WTRSTOP	Yes
Note: Specify the new buffer size in the BUFSIZE parameter on the CTnBPXxx member being used. The JOBNAME= parameter can be used for the SYSOMVS Ctrace to trace data just for jobs that run with the specific user ID(s) specified in the JOBNAME list. This filtering is based on the user ID of a job, not its jobname. The OMVS kernel is traced with jobname OMVS.

IBM® supplies the CTIBPX00 parmlib member, which specifies the z/OS® UNIX tracing begun at ipl. The contents of CTIBPX00 are:

      TRACEOPTS
            ON
            BUFSIZE(128K)

The parameters turn on the minimal SYSOMVS tracing. These parameters request the unexpected or important z/OS UNIX System Services events. The trace buffer size is 128KB. This member activates the minimal trace at ipl. In the IBM-supplied BPXPRM00 parmlib member, the CTRACE parameter specifies CTIBPX00 as the default.