Project Pxxx - Eurescom - European Institute for Research and

Volume 3: Annex 2 - Data manipulation and management issues Deliverable 1 a system that is up and available 90 percent of the time than to have to do sporadic fixes when problems occur. Second, by using redundant databases such as hot standby or replicated databases, users can be relieved of the recovery delays: Users can be switched to the hot backup database while the master database is being recovered.

A last but extremely important aspect of backup and recovery is testing. Test your backup and recovery procedures in a test environment before deploying them in the production environment. In addition, the backup and recovery procedures and facilities used in the production environment must also be tested regularly. A recovery scheme that worked perfectly well in a test environment is useless if it cannot be repeated in the production environment -- particularly in that crucial moment when the root disk fails during the month-end run!

References

[1] Oracle Consulting, Backup/Recovery Template, Berlin, 1996

[2] Theo Saleck, Datenbanken für sehr große Datenmengen: Nicht nur eine technische Herausforderung. "Datenbank Fokus", Februar 1998, Volume 2, pp

36-43.

[3] Derek Ashmore, Backing up the Oracle Enterprise. "DBMS Online"., Update

April 3, 1998 page 106 (120)

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1999 EURESCOM Participants in Project P817-PF