You request specific trace
functions with the MODIFY (F) command.
The syntax is:
F IDAVDT,function
The values
for function are:
- READIN[=xx][,KEEP]
- Parse the trace entries in IDAVDT00 (the default) or IDAVDTxx and
insert them into the dynamic trace save
area located in common storage. You can optionally add KEEP, to keep
trace entries valid after IDAVDT terminates.
- ENABLE=n[,ASID=asid]
- Enable a trace entry. n is the trace
entry number in
the dynamic trace save area. You can optionally specify the ASID of
the job where the target data set is opened, to optimize the search
time.
- DISABLE=n[,ASID=asid]
- Disable a trace entry. n is the trace
entry number
in the dynamic trace save area. You can optionally specify the ASID
of the job where the target data set is opened, to optimize the search
time.
- DISPLAY=n
- Display a trace entry, including the status for the trace entry
(enabled or disabled). n is the trace entry
number in the
dynamic trace save area.
- VALIDATE=n|ALL
- Validate a trace entry, or all trace entries, that are stored
in the dynamic trace area.
- INVALIDATE=n|ALL
- Invalidate a specific trace entry, or all trace entries, that
are stored in the dynamic trace area.
Use this if you no longer
want future OPENs to be impacted by the trace entry. Otherwise,
OPEN will continue to look for a name match for every data set that
is opened even if the IDAVDT started task is not active. Once
a trace entry has been invalidated, VSAM OPEN will no longer compare
that entry with the data sets being opened and all future ENABLE and
DISABLE commands against the invalidated entry will fail. Use VALIDATE
to validate trace entries that were invalidated by INVALIDATE.
INVALIDATE
will not affect data sets that are already opened with VSAM Record
Management Trace processing.