To prepare
the system for debugging you should do the following:
- Make sure that EDF is available in your system, by including group DFHEDF
in the list you specify in the GRPLIST system initialization
- Set up appropriate tracing options for your application. For details about
setting up tracing options, see the CICS® Problem Determination Guide.
- Make sure that transaction dumping is enabled for all transaction dump
codes, and that system dumping is enabled for all system dump codes. These
are, anyway, the default settings. For information about setting up dump options,
see the CICS Problem Determination Guide.
- Be prepared to print the dumps. Have a DFHDU640 job stream or procedure
ready, and have the CICS dump data sets defined in your startup procedure.
- Contact your system programmer for information about SDUMP data sets available
on your system and access to JCL for processing them.
- Enable CICS to detect loops, by setting the ICVR parameter in the SIT
to a number greater than zero. Something between five and ten seconds (ICVR=5000
to ICVR=10000) is usually a workable value.
- Generate statistics. For more information about using statistics, see the CICS Performance Guide.
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