CA Dynam for VSE User Guide

DYNCAT Commands
Considerations for a Multi-CPU Environment
The NODEQ parameter allows the DYNCAT backup to be followed immediately
by a RESTORE/REORG without the catalog being dequeued until the end of the
RESTORE/REORG. This ensures that no updates to the catalog take place. The
CPU running the backup must have all the other partitions idle. To ensure that
the catalog is not automatically dequeued, DYNAM must be disabled for the
duration of the backup and restore/reorg in the partition where the backup is
performed. Since DYNAM is disabled, the backup file cannot be controlled.
Perform backup in a multi-CPU environment without quiescing all other CPUs.
SET DYNAMT=OFF
SET DYNAMD=OFF
SET DYNAMFI=OFF
// ASSGN SYS006,CUU
// ASSGN SYS005,SYS006
// TLBL IJSYSBK
// EXEX DYNCAT
BACKUP NODEQ
RESTORE REORG
/*
SET DYNAMT=ON
SET DYNAMD=ON
SET DYNAMFI=ON
Note: To change any extents of the catalog, you must IPL all CPUs.
DYNCAT BACKUP/RESTORE Reports
In order to provide more detailed and meaningful information about the
Catalog's internal status, BACKUP and RESTORE REORG will produce reports of
the number of records of each type in the Catalog whenever they are run.
These reports should be retained for the normal cycle of backup tapes so that,
if questions arise, they will be available.
Reports show the physical count, logical count, and difference between the two
for each record type, as well as the number of blocks of each type on the
backup file. There will always be a difference between the physical and logical
counts for most record types since only the data records (DBRs, VBRs, and so
on) are restored directly; most of the linkage and control records in the
Catalog (DIRs, VIRs, and so on) are rebuilt by RESTORE REORG.
Chapter 8: Maintaining the Catalog−DYNCAT Program 8–43