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 Restoring a Backup from the Backup History 

You can use the Recovery Wizard to recover data interactively. You can perform a recovery with a complete data backup from the backup history.

Prerequisites

The log files of the Database Manager, dbm.knl and dbm.mdf, exist and are not damaged. This means that the backup history is complete.

If you are restoring using external backup tools, the log file dbm.ebf must also exist and not be damaged.

The database instance is in the ADMIN operational state.

Procedure

Use the Recovery Wizard.

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       1.      Choose Restore a specified backup from history.
You can now choose a time up to which you want to restore data. In this case, select
Restore database until a specified time and enter a time.
The system default is the current time. If you do not change the time proposed by the system, the database instance is restored completely, including all changes.

       2.      The backup history of the complete data backups is displayed.

       3.      Select the data backup you want.

       4.      The chosen data backup, the corresponding incremental data backup and the required log backups are displayed.
You can remove the incremental data backup from the proposal. If you do this, the
Recovery Wizard proposes the corresponding log backups, or another incremental data backup (if one exists).

       5.      The system prompts you to insert the specified backup medium.

       6.      Start the recovery.
If you are using external backup tools, the external backup IDs are displayed at this point.
The complete data backup is restored.

       7.      If you are restoring an incremental data backup, the Recovery Wizard prompts you to confirm this.

       8.      If you need to restore log backups, the Recovery Wizard prompts you to confirm that you want to restore all displayed log backups. After the log backups have been restored, the database instance is in the operational state ONLINE.
If no log backups need to be restored, the recovery is complete. You can also specify an UNTIL time. Choose Restart to start the database instance.

When you restore a series of backups, the Recovery Wizard prompts you to insert the next backup medium each time, unless you are restoring with an automatic tape loader.

If you want, you can stop the recovery and continue it at a later time (see Continuing an Interrupted Recovery).

 

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