Defining dump data sets

CICS® uses the dump data sets for recording dumps as a consequence of a failure that is detected when CICS is running, or upon explicit request.

You must define two types of dump data sets:
  1. z/OS system dump data sets, for recording system dumps that CICS requests using the z/OS SDUMP macro.
  2. CICS transaction dump data sets, for recording transaction dumps. CICS transaction dumps go to a pair of CICS BSAM data sets, with DD names DFHDMPA and DFHDMPB.

For more information about the dump data sets CICS uses for recording dumps, see Where dumps are written.