Use the CTRACE parameter in GRSCNFxx to specify the component trace options you want for your installation. For more information about global resource serialization component trace, see z/OS MVS Diagnosis: Tools and Service Aids. For information about how to specify the options you want, see z/OS MVS Initialization and Tuning Reference.

The CTRACE parameter in GRSCNFxx allows you to modify the default tracing options used by global resource serialization. Because the defaults provide adequate serviceability information, you should change them only upon the recommendation of your IBM® service representative.

Trace options are provided to select which events should be traced. The options which pertain to the star processing environment are CONTROL, REQUEST, MONITOR, SIGNAL, and FLOW. Each can be made more specific by specifying CONTROLn, REQUESTn, MONITORn, and SIGNALn, or FLOWn to provide greater flexibility and granularity in selecting which events to be traced. When viewing the trace data using the IPCS CTRACE subcommand, filtering options are provided to limit the scope of the data displayed, and subheaders are shown which briefly describe each trace key.