Why Oracle SQL Flash Recover Area is blank?-CodePudding

I get 0 rows in the results I use SELECT * from V$RECOVERY_FILE_DEST

V$RECOVERY_FILE_DEST is a default table name for the oracle Flash recovery area. Does this mean that a Backup never happens on this platform or Flash recovery area name is different from the default? If yes, then how can I locate the Flash Recovery area on Oracle Database if yes?

CodePudding user response：

V$RECOVERY_FILE_DEST shows target OS or ASM directories, as specified in the db_recovery_area_dir initialization parameter, which are designated to contain flash recovery area files. If there is nothing visible in the table, confirm the setting of the initialization parameter. If both are null/empty, then there is no Flash Recovery Area defined for the database.

select * from v$recovery_file_dest;

NAME  SPACE_LIMIT SPACE_USED SPACE_RECLAIMABLE NUMBER_OF_FILES     CON_ID
----- ----------- ---------- ----------------- --------------- ----------
 RECO 1.3980E 10  8989442048                 0               5          0

show parameter db_recovery

NAME                       TYPE        VALUE  
-------------------------- ----------- ------ 
db_recovery_file_dest      string       RECO  
db_recovery_file_dest_size big integer 13332M