When you restore a database instance, you restore it to the last consistent state it was in before a system failure (such as a damaged hard disk). To do this, you need seamless data backups and log backups.

You can also restore a database instance to a state it was in at a point in time in the past.

See also:

Concepts of the Database System, Restoring the Database Instance

Database Manager GUI, Restoring Data

Database Manager CLI, recover_start