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1Z0-052 · Question #107

You configured the Flash Recovery Area (FRA) for your database. The database instance is running in ARCHIVELOG mode. The default location for the archived redo log files is the Flash Recovery Area…

The correct answer is A. Flashback log files B. Backups that have become obsolete. The Flash Recovery Area automatically reclaims space by deleting flashback logs and RMAN-tracked obsolete backups when the configured space limit is approached.

Performing Backup and Recovery

Question

You configured the Flash Recovery Area (FRA) for your database. The database instance is running in ARCHIVELOG mode. The default location for the archived redo log files is the Flash Recovery Area. Which two files are removed automatically if the space is required in the FRA as per the retention policy? (Choose two.)

Options

  • AFlashback log files
  • BBackups that have become obsolete
  • CUser managed backups of the data files and control files
  • DArchived redo log files that have multiple copies in a different archive location and not backed up

How the community answered

(52 responses)
  • A
    73% (38)
  • C
    8% (4)
  • D
    19% (10)

Why each option

The Flash Recovery Area automatically reclaims space by deleting flashback logs and RMAN-tracked obsolete backups when the configured space limit is approached.

AFlashback log filesCorrect

Flashback log files are fully managed by the Oracle database engine within the FRA - when space is required and the configured DB_FLASHBACK_RETENTION_TARGET has been satisfied, Oracle automatically deletes the oldest flashback logs without DBA intervention.

BBackups that have become obsoleteCorrect

Backups tracked by RMAN that are marked obsolete according to the configured retention policy (either REDUNDANCY or RECOVERY WINDOW) are automatically eligible for deletion by the FRA space management algorithm when additional space is needed.

CUser managed backups of the data files and control files

User-managed backups created with OS-level copy commands are not registered in the RMAN repository and therefore are completely outside the scope of FRA automatic space management - the DBA must manually remove them.

DArchived redo log files that have multiple copies in a different archive location and not backed up

Archived redo log files that have multiple copies in another archive destination but have NOT yet been backed up are not eligible for automatic deletion from the FRA, because the backup retention policy requires them to be backed up before Oracle will consider them removable.

Concept tested: Flash Recovery Area automatic space reclamation policy

Source: https://docs.oracle.com/cd/E11882_01/backup.112/e10642/rcmquick.htm

Topics

#Flash Recovery Area#retention policy#obsolete backups#flashback logs

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