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Activating the Standby Database - (Oracle 9i)
by Jeff Hunter, Sr. Database Administrator
The Standby Database feature of Oracle (Oracle7 and higher) allows the DBA to maintain a duplicate, or standby, copy of a database at a remote site to provide continued primary database availability in the event of failure. The standby database is created with a special copy of the control file from the primary database. The standby database is kept in close synchronization with the primary database by applying the primary database's archived log files to the standby database. It is therefore necessary to operate the primary database in Archivelog Mode to avail the benefit of a standby database.
A standby database is generally used where high availability of data is required. A standby database is one way of quickly providing access to data if the primary database fails and recovery will take longer than the desired time. For instructions on how to activate a standby database in Oracle9i, please refer to the "Role Transitions" section in the appropriate article for your Data Guard configuration:
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