Trace

The trace file is created when HPCTRACE DD is allocated. This file is defined with RECFM=VBA and LRECL=137.

Trace commands are used to limit what is included in the trace file. In the absence of trace commands, minimal informational messages and all error messages are traced.

The amount of trace output can be very large. You should not use the ALL command unless the session to be traced is relatively small. When used for troubleshooting, trace commands are selectively applied to isolate specific points within an IMS HP Change Accumulation Utility session, thereby limiting the amount of output to be analyzed.

Trace commands are defined in the TRACE section of the command file HPCSYSIN DD. The TRACE section must be located following all IMS HP Change Accumulation Utility commands in the file.

The sample library member HPCADIAG describes several trace commands as an aid to understanding the syntax.