System trace writes trace data in system trace tables in the trace address space. System trace maintains a trace table for each processor. Obtain the trace data in a dump that included option SDATA=TRT. Table 1 shows the dumps that have TRT in their default options and how to request trace data for dumps that do not include the data by default.
System trace data that are requested by RTM and ABDUMPs
will only receive the most current 64K of data for each CPU when the
number of concurrent snapshots could affect system availability. This
is referred to as a mini-trace table snapshot. For more information
about working with system trace tables, see the SYSTRACE section in z/OS MVS IPCS Commands.
| Dump | How to obtain trace data |
|---|---|
| ABEND dump to SYSABEND | Default |
| ABEND dump to SYSMDUMP | Default |
| ABEND dump to SYSUDUMP | Default |
| SNAP dump | Request SDATA=TRT |
| Stand-alone dump | Default |
| SVC dump for SDUMP or SDUMPX macro | Default |
| SVC dump for DUMP operator command | Default |
| SVC dump for SLIP operator command with ACTION=SVCD, ACTION=STDUMP, ACTION=SYNCSVCD, or ACTION=TRDUMP | Default |
| Any dump customized to exclude trace data | Request SDATA=TRT |