Recovery for extrapartition transient data

CICS® does not recover extrapartition data sets. If you depend on extrapartition data, you will need to develop procedures to recover data for continued execution on restart following either a controlled or an uncontrolled shutdown of CICS.

Using post-initialization (PLTPI) programs for recovery:

You can use initialization (PLTPI) programs as part of the processing required to recover extrapartition transient data or to enable exits required during recovery.

There are two PLT phases. The first phase occurs before the system initialization task is attached, and must not use CICS resources, because initialization is incomplete. The first phase is intended solely to enable exits that are needed during recovery processing. The second phase occurs after CICS initialization is complete and, at this point, you may use PLT programs to customize the environment.

For information on how to code the PLT, see Program list table (PLT). For programming information about the special conditions that apply to PLT programs, see Writing initialization and shutdown programs.

There are two areas to consider in recovering extrapartition data sets:
  • Input extrapartition data sets
  • Output extrapartition data sets