How should the flashback area size be configured for Or…

The flashback area size in Oracle is determined by the parameter undo_retention.

The undo_retention parameter specifies the longest retention time of transactions in an Oracle database, which is the size of the flashback area. By default, the value of the undo_retention parameter is 900 seconds (or 15 minutes).

The value of the undo_retention parameter can be set by following these steps:

1. Log in to the Oracle database using the SYS user.
2. Use the following command to view the current undo retention value:
3. Display the undo retention parameter.
4. Use the following command to change the value of undo_retention:
5. Change the system setting for undo retention to a specific value for both the current session and all future sessions.
6. This is the value for undo_retention that you want to set, in seconds.
7. Restart the database to apply the changes.
8. Shut down immediately and then start up again.

Please be aware that changing the value of the undo_retention parameter may impact the performance and resource usage of other databases. Therefore, before making this adjustment, make sure that you fully understand and assess the potential consequences.