CSDFRLOG

The CSDFRLOG parameter specifies a number that corresponds to the journal name that CICS® uses to identify the forward recovery log stream for the CSD.

CSDFRLOG=number

This parameter is meaningful only if CSDRECOV=ALL and CSDRLS=NO are specified, otherwise it is ignored. If you specify CSDRLS=NO and CSDRECOV=ALL, but omit CSDFRLOG (or specify CSDFRLOG=NO), the SIT assembly fails. However, if you specify an invalid combination as SIT overrides, CICS initialization will fail.

CSDBKUP, CSDRECOV and CSDFRLOG are ignored if CSDRLS=YES is specified. This is because recovery attributes (that is, the recoverability, the forward recovery LSN, and the BWO eligibility) must be specified in the ICF catalog for data sets that are opened in RLS mode.

The recovery attributes can also be specified (optionally) in the ICF catalog when you specify CSDRLS=NO. If you specify recovery attributes in both the ICF catalog and as system initialization parameters, the ICF catalog values are used (but see the next paragraph).

For a CSD opened in a non-RLS mode (CSDRLS=NO), the CSDBKUP, CSDRECOV and CSDFRLOG system initialization parameters interact according to how they are specified. For information about their effects when the SIT is assembled and during CICS override processing, see Planning for backup and recovery.

This parameter is effective only on a CICS cold or initial start. On a warm or emergency restart, file resource definitions for the CSD are recovered from the global catalog.

number: The journal number that identifies the user journal that CICS is to use for forward recovery of the CSD. CICS journal names are of the form DFHJnn where nn is a number in the range 1 through 99. CICS maps the resulting journal name (DFHJ01—DFHJ99) to an MVS™ log stream.