The IDMS 19.0 Install JOB18 references a DD statement and dataset'//SYS001 DD DISP=OLD,DSN=SYS2.CAI.IDMS.V190.BAK3DICT' . Where are these Backup and Restore datasets allocated
There are several points in time in the IDMS Install process where it is advised to take a Backup of the IDMS Database file. These VARBLIST parameters that trigger the Backup and Restore process are optional and therefore can be omitted however creating Backup and Restore of the IDMS database files is recommended.
There are three points during the install where backups and restores could be done. If the following three variables are set to 'NO', then no backups or restores are done and the remaining variables in this section are ignored.
The following variables control the three backup and restore steps for the database files. The first is for the SYSDIRL segment. The second is for System 99. The third is a final one for the installed database.
The backups and restores are done from disk.
BKUP1 = YES DO A BACKUP OR BACKUP/RESTORE OF SYSDIRL SEGMENT?
BKUP2 = YES DO A BACKUP OR BACKUP/RESTORE OF SYSTEM 99?
BKUP3 = YES DO A BACKUP OR BACKUP/RESTORE OF INSTALLED DATABASE?
The backups and restores are done from disk. If you specify null values for the three 'VOL' variables below, a specific volume will not be requested in the JCL.
BK1VOL = '' DISK VOLSER FOR BACKUP OF SYSDIRL SEGMENT
BK1ACT = RESTORE RESTORE = backup & restore; BACKUP = backup only
BK2VOL = '' DISK VOLSER FOR BACKUP OF SYSTEM 99
BK2ACT = RESTORE RESTORE = backup & restore; BACKUP = backup only
BK3VOL = '' DISK VOLSER FOR BACKUP OF INSTALLED DATABASE
BK3ACT = RESTORE RESTORE = backup & restore; BACKUP = backup only
BK1DSN = @CFGPFX@.BAK1DIRL Dsname for backup of SYSDIRL segment
BK2DSN = @CFGPFX@.BAK2DICT Dsname for backup of System 99
BK3DSN = @CFGPFX@.BAK3DICT Dsname for backup of installed database
The Allocation of Backup and Restore database files are executed in JOB05 and the actual Backup and Restore executions are in JOB09 (SYSDIRL and System99), and JOB18.
CA IDMS Release 19.0 Installation and Maintenance Guide for z/OS.
Chapter 5: Starting Your Product, sections ‘Change Control Database‘ and‘Database Files Backup’