DB2 automatically takes care of crash recovery. If your database system crashes due to a software problem or power failure, the database manager will automatically restore your database. It uses a set of logs to record every transaction that has not yet been saved to permanent storage (hard drive). In the event of a power failure, it uses these logs to return your database to its state just after the last complete transaction.
But if the hard drive that stores your database has crashed or the data has been accidentally erased, you need to restore your database from a backup image. The Available Images page of this wizard contains a list that records database backups. Select a database backup image and click Finish.
If you enabled log archiving, you can also roll-forward, or reapply, the changes stored in the logs. This means that you will be able to return the database to its state just after the last complete transaction, even if you are dealing with a hard-drive crash.
For more information, see the Administration Guide .