A failure at the primary site might require you to use
the remote site to recover any lost data. If you followed the steps
1 through 5 above, you must perform the next steps at the remote site
to recover the VSAM spheres.
- Be sure CICS® VR is installed at the remote site
Ensure
that CICS VR is installed at the remote site and
an RCDS is allocated. The initial RCDS used at the remote site can
be empty because you import the recovery data into it in the next
step.
- IMPORT the RCDS
Use the CICS VR
RCDS utility with the IMPORT keyword specified to place the contents
from the sequential data set, produced from the RCDS EXPORT job, into
the RCDS used at the remote site. While you might have received multiple
generations of a sequential data set produced by the RCDS EXPORT job,
you only need to import the latest version. Once completed, CICS VR
contains the information necessary to build a recovery job for the
VSAM spheres. See Using the RCDS utility to import your RCDS for more
information.
- Catalog the log stream copies
After you receive the
log stream copies at the remote site, you need to catalog them. CICS VR
contains the names of the log stream copies but can only use them
if they are cataloged.
- Restore the VSAM spheres
The process of restoring
VSAM spheres from backups at the remote site is dependent on the type
of product that was used to create the backups. See the appropriate
backup utility below for an explanation of how to restore the backups:
- DFSMShsm logical backup
- If your VSAM spheres can be restored from DFSMShsm logical
backups, you do not need to restore the spheres manually. The CICS VR
panel interface can create a job that first restores the VSAM spheres,
then performs a forward recovery. You need to run the DFSMShsm utilities
to update your remote site's DFSMShsm control data sets.
These steps are described in DFSMShsm logical backup on tape – at the primary site.
- DFSMShsm full volume dump
- If your VSAM spheres can be restored from a DFSMShsm full
volume dump, you do not need to restore the spheres manually. The CICS VR
panel interface can create a job that first restores the VSAM spheres,
then performs a forward recovery. You need to run the DFSMShsm utilities
to update your remote site's DFSMShsm control data sets.
These steps are described in section DFSMShsm full volume dump on tape – at the primary site.
- ABARS (aggregate backup and recovery support)
- If
the backups for the VSAM spheres at the remote site were created by
ABARS, you do not need to restore them manually if all the following
are true:
- CICS VR was notified when the ABARS backups
were created. This means that the CICS VR
address space was active and the DFSMSdss logical
dump registration control default was activated when the ABARS backup
job was submitted.
- The ABARS backups were sent to the remote recovery site and cataloged.
- The RCDS EXPORT utility exported ABARS backup information. This
means that the BACKUP keyword was specified on the RCDS EXPORT command.
If all the conditions are true, you can use the CICS VR
panel interface to create a job that first restores the VSAM spheres,
then performs a forward recovery. If any one of the conditions is
not true, you must restore the VSAM spheres manually. Use the ABARS
utility to restore the VSAM spheres and be sure to record the date
and time of the backup that you are restoring. This means that you
must record the date and time the backup was created.
- DFSMSdss
- If DFSMSdss logical copies or dumps exist for
your VSAM spheres, you do not need to restore them manually if:
- CICS VR was notified when the DFSMSdss logical
copies or dumps were created, the CICSVRBACKUP keyword was added to
the job and the CICS VR address space was active when the copy
or dump job was submitted.
- The DFSMSdss backups were sent to the remote
recovery site and cataloged.
- The RCDS EXPORT utility exported DFSMSdss backup
information, the BACKUP keyword was specified on the RCDS EXPORT command.
The CICS VR panel interface can create a job that
first restores the VSAM spheres, then performs a forward recovery.
Otherwise,
you must restore the VSAM spheres manually. Use the DFSMSdss utility
to restore the VSAM spheres and be sure to record the date and time
of the backup that you are restoring, date and time the backup was
created.
- Backups registered through the file copy notification service
- You can use the CICS VR panel interface to select
backups for restore that were previously registered to CICS VR
through the file copy notification service, if you have performed
the following tasks:
- Sent the backups to the remote recovery site and cataloged them.
- Sent the associated restore skeletons to the remote recovery site,
and defined them to CICS VR at the remote recovery
site. Restore skeletons can either be added as a member to the SDWWSENU
data set, using the characteristics of this PDS, or as a member of
another PDS allocated to the DWWSLIB ddname.
- Exported backup information from the RCDS, BACKUP keyword added
to the RCDS EXPORT command.
If the above conditions are true, CICS VR
adds the restore skeleton associated with the selected backup as a
step in the produced recovery job.
- Other backup utilities
- If the backups for the VSAM spheres at the remote site were created
by any other utility not previously mentioned, restore the VSAM spheres
manually. Use the proper utility to restore the VSAM spheres and
be sure to record the date and time of the backup that you are restoring,
date and time the backup was created.
- Start the CICS VR panel interface
Next, start
the CICS VR panel interface to create and submit
a recovery job for your VSAM spheres. The utility used to create
the VSAM sphere backups dictate how you use the CICS VR
panel interface. See the appropriate backup utility below for an
explanation of how to use the CICS VR panel interface.
- DFSMShsm logical backup
- If you have DFSMShsm logical backups for your VSAM spheres, CICS VR
creates a recovery job that restores each VSAM sphere from its latest DFSMShsm backup
and then forward recovers the sphere. Call the CICS VR
panel interface, accept the default recovery parameters that CICS VR
displays, and specify QSAM copy as the log stream type to restore
each VSAM sphere from its latest backup and perform a forward recovery
on the restored VSAM spheres.
- DFSMShsm full volume dump
- If the backups for the VSAM spheres you want to recover reside
on a DFSMShsm full volume dump, CICS VR
creates a recovery job that restores each VSAM sphere from its latest
backup and then performs a forward recovery on the restored spheres.
Call the CICS VR panel interface, select “Full volume
dump” as the backup type, enter the date that the full volume dump
was created as both the backup time and the forward recovery start
time, and specify QSAM copy as the log stream type.
- ABARS (aggregate backup and recovery support)
- Use
the CICS VR panel interface to create a job that
automatically restores the VSAM spheres from ABARS backups, then performs
a forward recovery on the restored VSAM spheres.
- DFSMSdss
- If DFSMSdss logical copies or dumps exist for
your VSAM spheres, CICS VR creates a recovery job
that restores each VSAM sphere from its latest backup and then performs
a forward recovery on the restored spheres if:
- CICS VR was notified when the DFSMSdss logical
copies or dumps were created, the CICSVRBACKUP keyword was added to
the job and the CICS VR address space was active when the copy
or dump job was submitted.
- The DFSMSdss backups were sent to the remote
recovery site and cataloged.
- The RCDS EXPORT utility exported DFSMSdss backup
information, the BACKUP keyword was specified on the RCDS EXPORT command.
If all of the above points are true, call the CICS VR
panel interface and select the appropriate DFSMSdss logical
backup from the VSAM sphere parameters secondary window. Then, specify
QSAM copy as the log stream type. CICS VR
builds a job to restore the VSAM sphere from the selected backup,
then forward recover the restored VSAM sphere. Note: If
you do not send all backups registered to CICS VR
to the remote site, you might want to deregister backups that have
not been received and cataloged at the remote site from the RCDS.
This prevents information about backups that do not reside at the
remote site from being displayed through the CICS VR
panel interface. See the
CICS VR
User's Guide for more information about invoking automatic
backup deregistration from the CICS VR
VSAM sphere list
Administrate menu.
If
you did not export backup information from the RCDSs, then the backups
must have been restored manually prior to running forward recovery.
Call the CICS VR panel interface and enter the date and
time each backup was taken as the forward recovery start time. Also,
since the backups have already been restored, select None as
the backup type. Specify QSAM copy as the log stream type.
CICS VR then creates a job that forward recovers
the VSAM spheres.
- Backups registered through the file copy notification service
- If the tasks listed in step four, Restore the VSAM spheres,
were followed, call the CICS VR panel interface and select
the appropriate backup from the VSAM sphere parameters secondary window.
Then specify QSAM copy as the log stream type. CICS VR
builds a job to restore the VSAM sphere from the selected backup using
the associated restore skeleton, then forward recover the restored
VSAM sphere.
Note: If you do not send all backups registered to CICS VR
to the remote site, you might want to deregister backups that have
not been received and cataloged at the remote site from the RCDS.
This prevents information about backups that do not reside at the
remote site from being displayed through the CICS VR
panel interface. See the CICS VR
User's Guide for more information about setting automatic backup
deregistration from the CICS VR VSAM sphere list Administrate menu.
- Other backup utilities
- If you restored the VSAM spheres from a backup created by any
other utility not previously mentioned, then you must call the CICS VR
panel interface and enter the date and time the backup was taken as
the forward recovery start time. Also, since the backups have already
been restored, select None as the backup type. Be sure to
specify QSAM copy as the log stream type, then CICS VR
creates a job that forward recovers the VSAM spheres.
The above steps are recommendations that must be added to your
remote site disaster recovery plan. Implement the steps to fit into
your current remote site disaster recovery plan.