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Recovery Parameters vs. Auto Journalling

Q

Is there any difference between the 'RECOVERY PARAMETERS' and 'AUTO JOURNALLING' of the CICS FCT? Is there any consideration before choosing which to use for VSAM Forward Recovery purpose?

A

YES.  Some of the AUTO JOURNALLING parameters (specifically JNLadd = Before or ALL) can cause problems because Before and All journal records are written Before the VSAM I/O. This causes CICS WRITEs to be journaled even when the DUPREC condition is raised, producing FRS duplicate record errors (R15=8,FDBK=8).

RECOVERY PARAMETERS are recommended over AUTO JOURNALLING parameters (in CICS TS).

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