Performing Recovery Operations › BES Primary Database Recovery

BES Primary Database Recovery

You can recover a damaged BES primary database from the BES mirror database as outlined by the following points:

• Always use the BES mirror database to recover from a damaged BES primary database. The BES mirror database will contain the most up-to-date information.
• Note: The BES mirror database must be valid for you to use it to recover the BES primary database.
• The technique used to allocate the databases (NOREUSE) prohibits overwriting the data from the beginning of the file. Because of this, you will have to delete and reallocate the BES primary database.
• The space requirements for reallocating the BES primary database should match what the BES mirror database is currently using.

  You can over-allocate the BES primary database, but the additional space will never be used.

  If you under-allocate the BES primary database, there will be insufficient space for all of the data contained in the BES mirror database. The step for copying the data from BES mirror database to the new BES primary database will fail. If the copy step fails, delete and reallocate the BES primary database with more space and attempt the copy again.

• Recovery of the BES primary database from a tape or disk backup is possible, but you should avoid this method if the current BES mirror database is intact.

  If you need to use this method of recovery, delete and then redefine the BES primary database. The space requirements for the new BES primary database should match what the BES mirror database is using. The input to the copy and restore job is either the current BES mirror database on disk if it is available, or the mirror's latest backup.