PF11 from the CFA transaction can be used to turn the Z Abend Investigator debugging trace, HFZTRACE, ON or OFF. The trace
is written to the HFZTRACE
DDname, dynamically allocated to the JES spool.For example, entering '?' against a CICS®
region under SDSF, might result in the following display with the HFZTRACE output selectable with
'S' at ❶: