To configure Oracle Data Guard, you must back up the primary database and restore it onto the standby database server. You can do this either by using RMAN, as described in this topic, or through a cold backup and restore. Large sites may find the cold backup and restore approach is faster than using RMAN.
 | Note: We recommend three times the database size for backup allocation. |
The following tasks must be performed:
Stop IMPAX and the Application Server.
Run the Oracle Data Guard configuration on the primary server and start the public listener.
For Solaris servers only: Share the Flashback area.
Run the Oracle Data Guard configuration on the standby server.
Complete the Data Guard configuration on the primary server.
Start IMPAX and the Application Server.