The trace for the data-in-virtual component runs whenever data-in-virtual
is in control. No actions are needed to request it. The trace records
are placed in buffers in the nucleus (NUC) and system queue area (SQA);
data-in-virtual controls the size of the buffers. The trace entries
format the following events:
- Error events
- Data-in-virtual entry and return
- Real storage manager (RSM)/virtual data access events
- I/O driver events
You obtain the trace records in an SVC dump, stand-alone dump,
or SYSMDUMP ABEND dump when the dump contains the nucleus and SQA.
Format the trace with an IPCS DIVDATA subcommand, as follows:
- DIVDATA TRACE
- Formats trace entries selected through the ASIDLIST parameter.
- DIVDATA FULLTRACE
- Formats all trace entries.
For example, to format 1000 of the most recent trace entries, enter
the following DIVDATA subcommand:
DIVDATA FULLTRACE NEWEST(1000)