Utilities › TMSCOPY Utility—Back Up/Restore the TMC and Audit Data Set › Restoring the TMC and Audit Data Set › Restoring the TMC with a Noncurrent Backup

Restoring the TMC with a Noncurrent Backup

In the event you have to restore the TMC with a backup other than the most current backup or the most current alternate backup, you are urged to contact the CA 1 Technical Support Group for advice before starting the RESTORE operation.

CA 1 must be deactivated prior to a noncurrent RESTORE and the CTS address space must RELEASE the TMC (see the Administration Guide). TMSCOPY restore JCL uses an additional DD statement to read in all Audit data from the backup tapes created since the noncurrent version of the TMC (the version that is used as input). A parameter of NONCURR must be specified after RESTORE.

The following JCL illustrates a noncurrent restore using a minus 3 (-3) generation of the TMC backup; the minus 2, 1 and current generation of the Audit backups; and the live Audit file. The TMC image is written first; then, in chronological order, the Audit data from tape is written, followed by the Audit data from the live file.

//* STEP1 WILL DEACTIVATE CA 1
//STEP1    EXEC PGM=TMSINIT
//STEPLIB  DD  DSN=CAI.CTAPLINK,DISP=SHR
//TMSRPT   DD  SYSOUT=A
//TEMPAUDT DD  UNIT=SYSDA,
//             SPACE=(TRK,(10,1)),DCB=BLKSIZE=n*96              *NOTES
//TMSPARM  DD  DSN=hlq.CTAPOPTN,DISP=SHR
//* STEP 2 WILL RESTORE THE TMC
//STEP2    EXEC PGM=TMSCOPY,
//             PARM='[DATEFMT=(fmt),]RESTORE,NONCURR'
//STEPLIB  DD  DSN=CAI.CTAPLINK,DISP=SHR
//TMSRPT   DD  SYSOUT=A
//DUMPDD   DD  DSN=minus.three.backup.of.TMC(-3),DISP=SHR
//TMC      DD  DSN=CAI.CA1.TMC,DISP=SHR
//AUDITBK  DD  DSN=minus.two.backup.of.AUDIT(-2),DISP=SHR       *NOTES
//         DD  DSN=minus.one.backup.of.AUDIT(-1),DISP=SHR
//         DD  DSN=current.backup.of.AUDIT(0),DISP=SHR
//AUDITDD  DD  DSN=CAI.CA1.AUDIT,DISP=SHR
//RESTART  DD  DSN=dsname,DISP=(MOD,DELETE,CATLG),
//             UNIT=SYSDA,SPACE=(TRK,1),
//             DCB=(RECFM=FB,BLKSIZE=n*370)                     *NOTES
//* STEP3 WILL REACTIVATE CA 1
//STEP3    EXEC PGM=TMSINIT
//STEPLIB  DD  DSN=CAI.CTAPLINK,DISP=SHR
//TMSRPT   DD  SYSOUT=A
//TEMPAUDT DD  UNIT=SYSDA,
//             SPACE=(TRK,(10,1)),DCB=BLKSIZE=n*96              *NOTES
//TMSPARM  DD  DSN=hlq.CTAPOPTN,DISP=SHR

Notes:

• The BLKSIZE can be any multiple of the LRECL, 96.
• The AUDITBK DD properly references the Audit backup tapes, oldest to newest, in the concatenation. Failure to concatenate correctly or failure to read the tapes in the proper sequence (oldest tape first, most current tape last) may cause the TMC to contain incorrect information.
• The BLKSIZE can be any multiple of the LRECL, 370. Once complete, CA 1 can be reactivated using TMSINIT, and the DBS subtask can be started again or directed to OBTAIN the TMC again through CTS address space commands. to back up the restored image.