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Modify a trace

To modify some of the options for an active trace, use the M (Modify) line command on the CT view.

The Start CICS Trace Request dialog and each of the additional options dialogs are shown for the selected trace.

Only those options that you can tab to in the options dialogs are modifiable.

Related topic

Controlling-active-traces


Warning

Note

You cannot modify the LOGTRAC option after the trace has started. Thus, you cannot start or stop logging in the middle of a trace with a Modify command.

The following table describes several modifiable options you might want to change after starting a trace where logging is already active:

Dialog Option Name/Keyword

Possible use

Overwrite logs/TRREUSE

Changing from Y to N prevents overlaying data that has not been archived. However, new data will be lost when available data sets are full.

Changing from N to Y assures that a data set is always available for new trace data, but old trace data may be overlaid before it can be archived.

Log switch time/TRSWTIME

This option allows you to change the time when a log switch occurs. For instance, you might want to add a data set by increasing TRNUMDS and then force a switch to free up the current data set.

Archive STC/TRARCSTC

This option allows you to change the name of the archive job, perhaps to archive to a different set of archive data sets.

Number of logs/TRNUMDS

This option allows you to increase or decrease the number of log data sets. If TRNUMDS is increased and TRDISP=NEW, the additional data sets are allocated before the modify request is considered successful.

Volumes/TRVOLS, Primary CYLS/TRCYL, SMS Storage Class/TRSMSSCL, SMS Management Class/TRSMSMCL, SMS Data Class/TRSMSDCL

If TRDISP=NEW and you are adding log data sets by increasing TRNUMDS, you may want to change the allocation parameters for these new data sets to cause them to be allocated on different volumes, or to increase their size.

Warning

Note

If the number of logs is increased using the Modify command, the additional log data sets must be successfully allocated before the request is considered successful. If they cannot all be allocated, the request fails and any additional data sets that were dynamically allocated (DISP=NEW) are deleted. Logging continues with the original number of log data sets.


 

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