CICS restart JCL and parameters

Each CICS® restart can use the previous startup JCL and system initialization parameters, or can use a new job and parameters.

You cannot specify XRF=YES if you want to use ARM support. If the XRF system initialization parameter is changed to XRF=YES for a CICS region being restarted by ARM, CICS issues message DFHKE0407 to the console, then terminates.

CICS START options

You are recommended to specify START=AUTO, which causes a warm start after a normal shutdown, and an emergency restart after failure.

You are also recommended always to use the same JCL, even if it specifies START=COLD or START=INITIAL, to ensure that CICS restarts correctly when restarted by the MVS™ automatic restart manager after a failure. With automatic restart management support:

CICS overrides the start parameter when restarted by ARM and enforces START=AUTO. This is reported by message DFHPA1934, and ensures the resultant emergency restart handles recoverable data correctly.

If the ARM policy specifies different JCL for an automatic restart, and that JCL specifies START=COLD, CICS obeys this parameter but risks losing data integrity. Therefore, if you need to specify different JCL to ARM, specify START=AUTO to ensure data integrity.

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