IBM SC34-7012-01 manual Catalog recovery

ROUTE *ALL,VARY SMS,SMSVSAM,TERMINATESERVER

8.When all SMSVSAM servers were down, we deleted the IGWLOCK00 lock structure with the MVS command:

VARY SMS,SMSVSAM,FORCEDELETELOCKSTRUCTURE

9.We restarted the SMSVSAM servers with the MVS command:

ROUTE *ALL,VARY SMS,SMSVSAM,ACTIVE

CICS was informed during dynamic RLS restart about the data sets for which it must perform lost locks recovery. CICS issued messages such as the following to inform you that lost locks recovery was being performed on one or more data sets:

+DFHFC0555 ADSWA04A One or more data sets are in lost locks status. CICS will perform lost locks recovery.

10.If we had quiesced data sets before terminating the servers, this is the point at which we would unquiesce those data sets before proceeding.

If there were many data sets in lost locks it would take some time for lost locks recovery to complete. It may be necessary to explicitly open files which suffer open failures during lost locks recovery.

11.At this point it was possible that there were data sets on the restored volume which did not require forward recovery. In order to make these data sets available, we needed to re-allow access to the volume. Before doing this, however, we first had to quiesce the data sets that still required forward recovery, thus transferring the responsibility of preventing backouts from SMSVSAM to CICS. In our example, we quiesced our two data sets using the CEMT commands:

SET DSN(RLSADSW.VF04D.DATAENDB) QUIESCED SET DSN(RLSADSW.VF04D.TELLCTRL) QUIESCED

12.When we were sure that all data sets requiring forward recovery were quiesced, we used the following MVS command to allow access to the restored volume:

VARY SMS,CFVOL(9S4186),ENABLE

The above command produced the following message:

IGW463I DFSMS CF CACHE REQUEST TO ENABLE

VOLUME 9S4186 IS COMPLETED.

DFSMS CF VOLUME STATUS = "CF_ENABLED"

13.At this point, all data sets were available for new work except the two quiesced data sets on the restored volume. We recovered these using CICSVR.

All CICS regions were automatically notified when CICSVR processing for each data set was complete, and each data set was automatically unquiesced by CICSVR to allow the backout shunted UOWs to be retried.

After all backout shunted UOWs were successfully retried, the recovery was complete and we re-enabled the recovered data sets for general access on each CICS region using the CEMT commands:

SET FILE(F04DENDB) ENABLED SET FILE(F04DCTRL) ENABLED

14.Finally, we used the SHCDS command LISTSUBSYS(ALL) to confirm that no CICS region had lost locks recovery outstanding, indicating that recovery was complete.

Catalog recovery

If a user catalog is lost, follow the procedures documented in DFSMS/MVS Managing Catalogs. Before making the user catalog available, run the SHCDS CFREPAIR command to reconstruct critical RLS information in the catalog. Note

Chapter 17. Forward recovery procedures 197