Where are the flashback database logs stored?
Where are the flashback database logs stored?
fast recovery area
Flashback logs are stored as Oracle-managed files in the fast recovery area and cannot be created if no fast recovery area is configured. You must have enabled the flashback logging before the target time for flashback using the SQL statement ALTER DATABASE FLASHBACK ON . Query V$DATABASE.
Does Flashback database need archive logs?
Your database must be running in ARCHIVELOG mode, because archived logs are used in the Flashback Database operation. You must have a fast recovery area enabled, because flashback logs can only be stored in the fast recovery area.
How does Flashback Data Archive work?
Flashback Data Archive consists of one or more tablespaces or parts thereof. You can have multiple Flashback Data Archives. Flashback Data Archive is configured with retention time. Data archived in the Flashback Data Archive is retained for the retention time specified when the Flashback Data Archive was created.
How do I use archive logs to recover database?
To restore archived redo logs to a new location:
- Start RMAN and connect to a target database.
- Ensure that the database is mounted or open.
- Perform the following operations within a RUN command: Specify the new location for the restored archived redo logs using SET ARCHIVELOG DESTINATION .
Where are the flashback logs stored in the database?
Flashback Database uses its own logging mechanism, creating flashback logs and storing them in the fast recovery area. You can only use Flashback Database if flashback logs are available. To take advantage of this feature, you must set up your database in advance to create flashback logs.
What’s the recovery method for Oracle Flashback Database?
The traditional recovery method uses backups and redo log files; Flashback Database uses a new type of log file called the Flashback Database log. The Oracle database server periodically logs before images of data blocks in the Flashback Database logs.
Is there automatic clearing of flashback logs in Oracle?
The descriptions of each operation and rules stated above should resolve that confusion now. Moreover, automatic clearing of flashback logs has been introduced for the Oracle Database in 19c and that means the Oracle Database will now automatically manage flashback logs in the fast recovery area.
How to enable Flashback Query and Flashback Transaction?
In addition to the minimum supplemental log for Flashback Query, you need to add supplemental log for primary keys and foreign keys in order to trace their changes in Flashback Transaction Query. Database altered. Database altered. Let’s see how to use it by the following example.