CICS® VR
automatic deregistration deregisters, and optionally deletes, information
that relates to the retention settings that have been set.
The following summarizes what is deregistered and deleted when the corresponding
retention settings are specified:
- Retention period for blocks
-
- All MVS™ blocks
on all registered forward recovery and log of logs log streams that are older
than the specified retention period are deleted. CICS VR issues the IXGDELET service to
mark the outdated blocks for deletion.
- All VSAM sphere update activity that is older than the specified retention
period is deregistered from the RCDS if no correspond log stream copies are
still registered to CICS VR.
- Retention period for copies
- All registered log stream copies where the latest time stamp in the copy
is older than the specified retention period are deregistered from the RCDS.
- All VSAM sphere update activity that is older than the specified retention
period is deregistered from the RCDS if the corresponding forward recovery
log stream blocks also have been deleted.
- If the Uncatalog and delete setting is 1 (Yes), all registered
log stream copies where the last time stamp in the copy is older than the
specified retention period are uncataloged and deleted. If a non-SMS log stream
copy resides on tape, it is uncataloged, but not deleted
- Retention period for Change accumulation
- All change accumulation information that is older than the specified retention
period is deregistered from the RCDS.
- If the Uncatalog and delete setting is 1 (Yes), all change accumulation
information that is older than the specified retention period is uncataloged
and deleted.
- Retention setting for backups (Backup retention period, Use
log retention period, or Use catalog information)
- All information about backups that meet the specified automatic backup
deregistration setting is deleted from the RCDS.
If the Uncatalog
and delete setting for automatic backup deregistration is 1 (Yes), CICS VR attempts
to uncatalog and delete all registered non-DFSMShsm and non-ABARS backups
backups that are automatically deregistered from the RCDS. Non-SMS backups
that reside on tape are uncataloged but not deleted.
- Any retention period setting
- If you have specified a retention period for MVS blocks, log stream copies, or backups, CICS VR
automatic deregistration deregisters the following additional information
from the RCDS:
- All information about CICS VR recovery job steps that were created before
the maximum retention period value is deregistered from the RCDS.
- All VSAM sphere entries that no longer have any associated backups or
update activity registered in the RCDS are deregistered from the RCDS.
CICS VR
uses the largest retention period setting when determining whether to delete
this information. For example, if you specified a retention period value of
two days for MVS blocks,
five days for log stream copies, and five days for backups, CICS VR uses
the maximum retention period value of five days.