Question: What Is Oracle Fast Recovery Area?

Where is fast recovery area in Oracle

Oracle recommends, however, that the fast recovery area be located on a separate storage device from the database files.

Specifies the location of the fast recovery area.

This can be a file system directory or an Oracle Automatic Storage Management (Oracle ASM) disk group, but not a raw disk..

How do I know if my FRA is full

Checking the current usage 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). 8 rows selected.

What is Oracle retention policy

A retention policy determines when files are obsolete, meaning that they are no longer needed to meet your data recovery objectives. … When using a policy based on redundancy, you specify how many full or level 0 backups of each data file and control file that Oracle Recovery Manager (RMAN) keeps.

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…

How do I change the FRA location in Oracle

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 Oracle 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.

How do I free FRA space

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.

What is V Recovery_file_dest

V$RECOVERY_FILE_DEST displays information about the disk quota and current disk usage in the fast recovery area. … Amount of disk space (in bytes) used by fast recovery area files created in current and all previous fast recovery areas.

How do I free up space in flash recovery area

To free up space from the Flash Recovery Area, follow these steps:Consider changing your RMAN retention policy. … Back up files to a tertiary device, such as tape using the RMAN command BACKUP RECOVERY AREA.Add disk space and increase the db_recovery_file_dest_size parameter to reflect the new space.More items…

How do I know if flashback is enabled

Use the following command to check if Flashback Database is enabled for your target database: SELECT FLASHBACK_ON FROM V$DATABASE; To enable Flashback Database: Ensure that you configure a fast recovery area and that the database is running in ARCHIVELOG mode.

How do I turn off FRA

To disable the current flash recover area, use the below command: SQL> ALTER SYSTEM SET DB_RECOVERY_FILE_DEST = ”; Note: even after you disable the flash recovery area, the RMAN will continue to access the files located in the flash recovery area for backup and recovery purposes.

What size is 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 can I make my recovery area faster

Change the DB_RECOVERY_FILE_DEST initialization parameter. SQL> ALTER SYSTEM SET DB_RECOVERY_FILE_DEST=’+disk1′ SCOPE=BOTH SID=’*’; 2. After you change this parameter, all new flash recovery area files will be created in the new location.

How do I know if my archive log is full

Checking ARCHIVELOG mode statusLog in as OS user oracle and enter the following commands: $ export ORACLE_SID= where is the name of the database $ sqlplus /nolog SQL> connect / as sysdba.To check the ARCHIVELOG mode status, enter the following SQL command: SQL> archive log list;

How do you do flashbacks in Oracle

Specify a restore point to which you want to flash back the table. The restore point must already have been created. By default, Oracle Database disables all enabled triggers defined on table during the Flashback Table operation and then reenables them after the Flashback Table operation is complete.

How do I clean up the Oracle flash recovery area

You have following choices to free up space from flash recovery area:Consider changing RMAN RETENTION POLICY. If you are using Data Guard, … Back up files to tertiary device such as tape using RMAN. … Add disk space and increase db_recovery_file_dest_size parameter to. … Delete unnecessary files using RMAN DELETE command.

What is recovery area

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 Database automatically manages this storage, deleting files that are no longer needed.

Where is flash recovery area

Query the V$RECOVERY_FILE_DEST view to find out the current location, disk quota, space in use, space reclaimable by deleting files, and total number of files in the flash recovery area.

How do I clean my FRA

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.

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.