STORE and TurboSTORE/iX Products Manual (B5151-90003)

130 Chapter7
TurboSTORE/iX 7x24 True-Online Backup
TurboSTORE/iX 7x24 True-Online Backup Options
If a job fails, ASK would not show a request for that job. You could first do a RECALL to
see if all the requests are there. If the job is missing, you could go fix the job, manually
rerun it until it gets to ASK, and then complete all the backups by replying to all the ASK
operator requests.
• Use the START or END parameter with the time parameter.
When you use ONLINE=START with the time parameter, set the time far enough in the
future to be sure the setup time for each backup has completed. When you use
ONLINE=END with the time parameter, set the time far enough in the future to be sure
all backups are complete.
Using START or END with the time parameter is a good method for synchronizing all
stores sequentially, causing them to have the same approximate sync points.
• Use the END, ASK, and time parameters.
If you think there might be a job failure, this is the best method to use. Set the time far
enough in the future to be sure all backups are complete. This method puts all the ASK
requests on the console at the specified time, instead of displaying each job request as it
completes.
Roll-forward Recovery of TurboIMAGE/XL Databases (DBRECOV)
DBRECOV performs rollforward recovery of TurboIMAGE/XL databases stored using the
new TurboSTORE/iX 7x24 True-Online Backup (with either the START or END option).
Databases enabled for roll-back recovery are not affected by using the 7x24 true-online
backup.
To perform rollforward recovery of your database stored using 7x24 true-online backup,
the following requirements must be adhered to:
• Your system must be up on MPE/iX Release 5.5 or later.
• LOGID must include the AUTO option. If it was not used in the GETLOG command, use
the ALTLOG command to include the AUTO option.
:GETLOG imageid;log=image001,DISC;pass=wontell;auto
or
:ALTLOG noautoid;auto
• User Logging Process must remain active when storing the database even when the
database is not open. That is, LOG logid,STOP must not be issued before storing the
database. This is because the logging information which is dynamic in nature, is
incorporated in the root file when the database is stored. This dynamic logging
information can only be obtained when the log process is active. It is used later when
performing rollforward recovery.
• After the backup is completed, purge all logfiles preceding the one in use when the
backup was initiated. It is essential that you retain the one used when backup was
initiated and the ones following that. These are the logfiles that will be needed later to
perform rollforward recovery.