9.8. SMS tracing
If you need to trace the interaction between a data set allocation and SMS, collecting SMS trace data may be of assistance. The procedures to collect and review SMS trace data follow. In this example we are tracing logger address space (IXGLOGR) data set allocation.
1. | Issue the following MVS command:
SETSMS SIZE(0m) |
2. | Issue the following MVS command:
SETSMS TRACE(ON),TYPE(ALL),SIZE(1M),DESELECT(ALL), SELECT(ALL),JOBNAME(IXGLOGR) |
3. | Force Logger to allocate a data set.
|
4. | Turn off the trace by issuing:
SETSMS TRACE(OFF) |
5. | Make note of the data set name to assist IBM support in locating the trace entries.
|
6. | Take a dump of the SMS address space. For example:
DUMP COMM=(any dump title you desire) R #,JOBNAME=SMS,CONT R #,SDATA=(LPA,CSA,ALLNUC,GRSQ,LSQA,SWA,PSA,SQA,TRT, ... |
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