Recovering multicluster non-key range control data sets

ARCIMPRT has been enhanced to recover multicluster non-key-range data sets. It uses the key boundaries to determine which journal records need to be applied to the cluster being recovered.

If you reorganize your control data sets, you should immediately back them up. If you do not, and you attempt to perform a CDS recovery using a CDS backup version created before the CDS was reorganized, the recovery fails with message ARC0466I. Then the following steps must be taken to restore your multicluster non-key-range CDS:

1. The cluster being recovered must be returned to the state in which it existed after the reorganization. For example, if the control data sets were split from two to three, then the job or jobs used to perform the split should be rerun. Only the cluster or clusters being recovered should be returned to the state they were in following the reorganization.
2. Reissue the ARCIMPRT job using the new FORCE parameter. The FORCE parameter causes ARCIMPRT to use the latest key boundaries in use, instead of those that existed at the time of the CDS version backup. To use the FORCE parameter on the MCDS, you would issue:

   PARM='MCDS,FORCE'

After the recovery, message ARC0467I is issued identifying the cluster that was recovered.