The trace file name is CURLIB/UNVTRCUCMS(Sxxxyyyyyy), where:

• xxx is the three least-significant hexadecimal digits of the UCMD Server process identifier.
• yyyyyy is the six least-significant hexadecimal digits of the component identifier.
   
  The fault tolerant modes of Universal Command require this combination to produce unique, meaningful member identifiers. The default *CURLIB is UNVTMP520.

The trace file name is ucmsrv-N-S.trc, where:

• N is the component ID assigned to this instance of the UCMD Server by the Broker.
• S is a sequence number.
   
  The trace file is created in the trace directory, as specified by the TRACE_DIRECTORY option, which defaults to /var/opt/universal/trace.

The trace file name is ucmsrv-N.trc, where:

• N is the process ID of UCMD Server.
   
  It is created in the working directory of UCMD Server.

There are two possible destinations of the trace data:

1. If ddname UNVTRMDL is defined in the UBROKER started task procedure, a sequential data set is created using the data set allocated to UNVTRMDL as a model.
   The dynamically allocated trace data set name is #HLQ.UCM.Dyymmdd.Thhmmss.Cnnnnnns, where:
   • #HLQ is the data set name allocated on the UNVTRMDL ddname.
   • yymmdd is the year, month, and day.
   • hhmmss is the hour, minute, second the data set was allocated.
   • nnnnnn is the last six digits of the Server's component ID in hexadecimal format.
   • s is the component ID's sequence number from 0 - F.
      
     Each time that a server is restarted, its sequence number is incremented. If a server is restarted more than 15 times, tracing is disabled.
      
2. If ddname UNVTRMDL is not defined in the UBROKER started task procedure, member name Cnnnnnns is created in the PDS or PDS/E allocated to the UNVTRACE ddname, where:
   • nnnnnn is the last six digits of the Server's component ID in hexadecimal format.
   • s is the component ID's sequence number from 0 - F.
      
     Each time that a server is restarted, its sequence number is incremented. If a server is restarted more than 15 times, tracing is disabled.
      
     Depending on the error condition being diagnosed, it is possible that the member name of the UNVTRACE PDS or PDS/E is not created. If this occurs, the UNVTRMDL ddname must be used to create a sequential data set name.
      
     The records written to PDS and PDS/E members cannot be wrapped, so the TRACE_FILE_LINES configuration option limit has no effect on the maximum number of trace records written to the member.