IBM 000-8697 Write Each Archive Page to Disk, Initialize Shared Memory, Roll Forward Logical Logs

Data Consistency, Recovery, and Migration 4-51
Write Each Archive Page to Disk
Write Each Archive Page to Disk
Itmight be that your configuration defines both TAPEDEV and LTAPEDEV as
thesame device. Since this ispossible, tbtape prompts for you to mount the
level-0archive tape and to press RETURN to continue the restore. If your tape
is already mounted on the archive device, simply pressRETURN.
Asthe restore begins, tbtape reads each page of data from the archive tape(s)
and writes the page to the address contained in the page header.
Thetbtape process prompts for additional tapes if the level-0 archive is
contained in more than one volume.
Afterthe level-0 archive is restored, tbtape prompts for additional levels. You
must be aware of the archive levels required for your specific restore. If you
donot have any other archive levels to restore, or if for some reason you wish
to stop at a specific level, respond N to indicate no at the following prompt:
Do you have another level of tape to restore?
Initialize Shared Memory
After the last archive tape is restored, thetbinit process clears the physical
logto prevent fast recovery activity as it initializes shared memory. Youwill
see the following message:
Initializing, please wait ...
Roll Forward Logical Logs
The tbtape process automatically prompts you to indicate if you want to
restoreany logical logs. This same prompt tells you the logical log ID number
at which the rollforward should begin:
Is there a logical log to restore? (y/n)
Roll forward should start with log number 28
Youmust rely on your own tape-labelling system to direct you to the specific
tape that contains this logical log file. All logical log files must be rolled
forwardin sequence. If this tape is not available, you cannot roll forward any
log files.
If you respond with a y, for yes, OnLine prompts you to mount the tape.