To successfully use the enhanced CDS recovery function, you must
be sure that:
- You have sufficient DASD to contain the rebuilt control data set
and the backed up journal.
- DFSMShsm is not active on any z/OS® image
in the complex while the control data set is being recovered.
- You have specified SETSYS JOURNAL for normal DFSMShsm operation,
because an up-to-date journal is necessary for the enhanced CDS recovery
function.
- You run the ARCIMPRT utility separately for each specific control
data set to be recovered because the parameter passed to ARCIMPRT
is for a specific control data set to be recovered. Also, the EXPORT
DD statement must be changed to the particular exported control data
set being used.
If you are recovering a multicluster CDS, you need
recover only the specific volume which failed; you do not need to
recover all the volumes within the multicluster CDS.
In other
words, if a migration control data set is to be recovered, then the
parameter passed to ARCIMPRT must be MCDS or MIGRATIONCONTROLDATASET,
and the EXPORT DD statement dsname must refer
to the portable-exported-migration CDS (your backup copy of the control
data set).