A user-replaceable program, DFHXCTRA, is available for use under the guidance of IBM® service personnel. It is the equivalent of DFHTRAP used in CICS®. It is invoked every time the external CICS interface writes a trace entry.
DFHXCTRA can perform one or all of the following actions:
The CICS-supplied sample version of DFHXCTRA performs all four of the above functions if it detects a trace entry that indicates that a FREEMAIN error occurred while trying to free an EXCI pipe control block.
The source for DFHXCTRA is supplied in CICSTS31.CICS.SDFHMAC. The parameter list passed to DFHXCTRA is defined in the copybook DFHXCTRD, which is supplied in CICSTS31.CICS.SDFHMAC.DFHXCTRD also defines all the external CICS interface trace points for use by DFHXCTRA.
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