You can start the standby instance in a state from the past. You may need to do this if, for example, you lose data during an operation in the original instance, and want to restore it to the state it was in before that operation.
· You have set up a standby instance.
· The standby instance has not been in the operational state ONLINE since it was last initialized.
· You have imported the log backups from the original instance only up to a point in time before your chosen restore time.
If the log backups are imported automatically from the original instance into the standby instance, then cancel the imports (recover_cancel), and import manually any log backups that are missing, up until your chosen time. Proceed as follows:
· When you import the relevant log backup in the Database Manager GUI, choose the option Restore until a specific time (see also Restoring Without a Backup History).
· When you import the relevant log backup in the Database Manager CLI, use the command recover_start with the option UNTIL <date> <time> (see also Commands for Restoring).
The log entries are imported into the standby instance up to the chosen time. Any changes you have made after this time in the original instance are ignored by the standby instance.
You can now start operating the standby instance as an active instance.