Specify options for requesting a SYSXCF component trace on a CTnXCFxx
parmlib member or on the reply for a TRACE CT command.
If you specify additional tracing options while the system is running,
place the trace records in a trace data set or sets, because the trace
buffer size specified at initialization cannot be changed while the
system is running. Specify NOWRAP to keep from losing trace records.
Note: NOWRAP prevents trace records written to the data
set or sets from being overwritten. Once the data set or sets are
filled, no more records are written to them. The system still writes
trace records to the address-space buffers. The system wraps the
address-space buffers, so that trace records may be lost. Be sure
to allocate enough space on the data set or sets to hold all the records
needed for diagnosis.