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Database Administration
Protecting Your Data : Recovering a Database : After-imaging and roll-forward recovery commands
 

After-imaging and roll-forward recovery commands

The table below lists the utilities used to perform the steps in the scenarios shown in Samplerecovery scenarios.
Table 24. Utilities used with roll-forward recovery
Utility command
Function
BUSY
Verifies that the database is not in use. The database cannot be in use when you perform a full offline backup.
PROBKUP or operating system utility
Backs up the database. You must perform a full backup of the database before you can use roll-forward recovery.
RFUTIL MARK BACKEDUP
Marks the database as backed up. If you do not use PROBKUP to back up the database, you must mark the database as backed up to begin after-imaging or start a new after-image file.
RFUTIL AIMAGE NEW
Starts a new AI file. After you back up the database and AI files, you can truncate the existing AI file.
RFUTIL AIMAGE END
Disables after-imaging. Before you run a batch job, you might want to disable after-imaging to improve performance.
RFUTIL ROLL FORWARD RETRY
Restarts the roll-forward operation. Use of this qualifier is limited to RFUTIL roll-forward operations that fail because of power outages or system failures.