You configured the Fast Recovery Area (FRA) for your database. The database instance is in ARCHIVELOG
mode. The default location for the archived redo log files is the FRA.
Which two files are removed automatically if space is required in the FRA as per the retention policy? (Choose
two.)
A.
Archived redo log files that have multiple copies in a different archive location
B.
user-managed backups of data files and control files
C.
RMAN backups that are obsolete
D.
flashback logs
The correct answers should be A and D.
– RMAN does not automatically delete backups rendered obsolete by the recovery window. Instead, RMAN shows them as OBSOLETE in the REPORT OBSOLETE output and in the OBSOLETE column of V$BACKUP_FILES. RMAN deletes obsolete files if you run the DELETE OBSOLETE command.
Richard, I am not really sure of the answer but below is from an oracle document
The automatic deletion of obsolete files and files moved to tape from the fast recovery area makes it a convenient archiving destination. Other destinations require manual deletion of logs.
https://docs.oracle.com/database/121/ADMQS/GUID-FC941E39-3B5D-409D-AC70-C940EB4A0EFA.htm#GUID-FC941E39-3B5D-409D-AC70-C940EB4A0EFA
Because C refers to RMAN backup specifically.
-https://docs.oracle.com/database/121/BRADV/rcmconfb.htm#BRADV89437
Take a look at this particular section and tell me what you think.
Ok I think I understand why A and D because of the statement– In general, Oracle Database eventually deletes TRANSIENT files after they become obsolete under the backup retention policy or have been backed up to tape.
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agree A & D