How do I clean up the Oracle flash recovery area
o Use the BACKUP RECOVERY AREA command in the RMAN to back up the contents of the flash recovery area to a tape device.
o Use the RMAN to delete unnecessary backup files.
The RMAN commands CROSSCHECK and DELETE EXPIRED come in handy during this deletion process..
How do I increase my recovery DEST size
After you start SQL*Plus and connect to the database, set the size of the flash recovery area. For example, set it to 10 GB: SQL> ALTER SYSTEM SET DB_RECOVERY_FILE_DEST_SIZE = 10G SCOPE=BOTH SID=’*’; Set SCOPE to BOTH make the change both in memory and the server parameter file.
How do I restore a flashback database
To restore your database to a guaranteed restore point, follow the steps below: $> … $> sqlplus / as sysdba;SQL> select current_scn from v$database;SQL> shutdown immediate;SQL> startup mount;SQL> select * from v$restore_point;SQL> flashback database to restore point CLEAN_DB;SQL> alter database open resetlogs;More items…•May 3, 2019
How do I find my fast recovery area
It is important to monitor space usage in the fast recovery area to ensure that it is large enough to contain backups and other recovery-related files. Oracle Database provides two views to monitor fast recovery area space usage, V$RECOVERY_FILE_DEST and V$RECOVERY_AREA_USAGE .
How do I check flash recovery area
The current FRA usage can be checked with the views v$recovery_area_usage (for each file type) and v$recovery_file_dest (for overall size and usage).
How do I free up flash recovery area
After you transfer backups from the flash recovery area to tape, you can resolve the full recovery area condition by deleting files from the flash recovery area, using forms of the RMAN DELETE command. Note: Flashback logs cannot be backed up outside the flash recovery area.
How do I increase flash recovery area size
For example, to set the flash recovery area size to 20 gigabytes, enter the following command: ALTER SYSTEM SET DB_RECOVERY_FILE_DEST_SIZE = 20G; To change the location of the flash recovery area, enter the following command at the SQL Command Line prompt: ALTER SYSTEM SET DB_RECOVERY_FILE_DEST = ‘new_path’;
What is Db_recovery_file_dest
DB_RECOVERY_FILE_DEST specifies the default location for the flash recovery area. The flash recovery area contains multiplexed copies of current control files and online redo logs, as well as archived redo logs, flashback logs, and RMAN backups.
How do you free up FRA
In general, you should not have to manually delete anything. If you are running out of space you have to either decrease your retention policy or increase the size of your FRA. delete noprompt expired backup; delete noprompt expired archivelog all; These delete all inventory entries that have no match in the storage.
How do you use flashbacks in SQL
Use the FLASHBACK TABLE statement to restore an earlier state of a table in the event of human or application error. The time in the past to which the table can be flashed back is dependent on the amount of undo data in the system.
What is Fast Recovery Area in Oracle
The fast recovery area is an Oracle-managed directory, file system, or Oracle Automatic Storage Management disk group that provides a centralized storage location for backup and recovery files. Oracle creates archived logs and flashback logs in the fast recovery area.
What will be the process of tuning instance recovery
Understanding Instance Recovery. Tuning the Duration of Instance and Crash Recovery….These methods are:Using initialization parameters to influence the number of redo log records and data blocks involved in recovery.Sizing the redo log file to influence checkpointing frequency.Using SQL statements to initiate checkpoints.More items…
What is flash recovery area
The Oracle Flash Recovery Area (FRA) is a directory that contains Oracle datafiles, archived redo logs, backup pieces, the control file, and image copies. This backup has the advantages of automatic file management and quick recovery, but has the disadvantage of requiring more storage space than the database.
What is Fra disk
FRA (flash or fast recovery area) is a storage area (directory on disk or ASM diskgroup) that contains redo logs, control file, archived logs, backup pieces and copies, flashback logs and, in 11g, foreign archived logs.
What file types will by default be stored in the flash recovery area if it has been defined
Oracle RMAN – Using the Flash Recovery AreaFile TypeNotesFlashback logsFlashback logs are stored in the flash recovery area, if it is defined.Control file autobackupsThe default location for the RMAN control file autobackups is the flash recovery area, if it is defined.4 more rows•Apr 14, 2013
What does crosscheck Archivelog all do
2) crosscheck archive log all; The first form is used to delete entries from the rman catalog when the backup media is no longer available for restores. In this case records for the particular backup do not exist in the ARCserve database, but still have records in the rman catalog.
How do you set up FRA
To configure the fast recovery area: Assume that you want to want to place the fast recovery area in the directory /u02/oracle/fra and you want its size to have an upper limit of 10 GB. Connect Oracle Recovery Manager (RMAN) to the target database as described in “Connecting to the Target Database Using RMAN.”