IBM SC34-7012-01 manual Forward recovery of data sets accessed in non-RLS mode, Close all files

that before running SHCDS CFREPAIR, the restored user catalog must be import connected to the master catalog on all systems (see the “Recovering Shared Catalogs” topic in DFSMS/MVS Managing Catalogs).

Forward recovery of data sets accessed in non-RLS mode

For data sets accessed in non-RLS mode, use the following forward recovery procedure:

1. Close all files

Close all the files that are open against the failed data set, by issuing CEMT, or EXEC CICS, SET FILE(...) CLOSED commands in the CICS region that owns the files.

2. Create a new data set

Create a new data set into which the backup is to be restored. At this stage, it cannot have the same name as the failed production data set.

3. Restore the backup

Restore a full backup of the data set to the new data set created in step 2. You can use the recovery function (HRECOVER) of DFSMShsm to do this.

4. Run the forward recovery utility

Run your forward recovery utility to apply the forward recovery logs to the restored data set, to redo all the completed updates.

5. Delete the old data set

Delete the old data set to enable you to rename the new data set to the name of the failed data set.

6. Alter the new data set name

Use access method services to rename the new data set to the name of the old data set.

ALTER CICS.DATASETB NEWNAME(CICS.DATASETA)

Renaming is necessary to enable CICS to perform any outstanding backout processing.

These steps are summarized in the following commands, where the data set names are labeled with A and B suffixes:

CEMT SET FILE(...) CLOSED (for each file opened against the failed data set)

DEFINE CLUSTER(NAME(CICS.DATASETB) ...

HRECOVER (CICS.DATASETA.BACKUP) ... NEWNAME(CICS.DATASETB) EXEC PGM=fwdrecov_utility

DELETE CICS.DATASETA

ALTER CICS.DATASETB NEWNAME(CICS.DATASETA)

Procedure for failed RLS mode forward recovery operation

There are some forward recovery failures that can be resolved.

For example, when:

vFRSETRR fails because the data set is already allocated to another job

vThe restore fails because the backup has gone to tape and operator intervention is required

vThe forward recovery doesn’t work because the log data sets have been migrated

198CICS TS for z/OS 4.1: Recovery and Restart Guide