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Oracle

1Z0-083 · Question #261

Which three are true about recovering tables using RMAN?

The correct answer is A. RMAN can recover tables owned by the SYSTEM user. D. RMAN always uses an auxiliary instance. E. RMAN can recover a table after a DDL operation has altered the table structure. RMAN's table recovery feature (Oracle 12c+) always creates or uses an auxiliary instance to restore the backup, extract the target table via Data Pump, and import it into the production database - making D unconditionally true. A is correct because SYSTEM is a regular…

Backup and Recovery

Question

Which three are true about recovering tables using RMAN?

Options

  • ARMAN can recover tables owned by the SYSTEM user.
  • BRMAN can recover tables owned by the SYS user.
  • CRMAN can recover tables in the SYSTEM tablespace.
  • DRMAN always uses an auxiliary instance.
  • ERMAN can recover a table after a DDL operation has altered the table structure.
  • FRMAN can recover tables in the SYSAUX tablespace.
  • GRMAN can recover tables in a standby database.

How the community answered

(39 responses)
  • A
    72% (28)
  • B
    8% (3)
  • C
    3% (1)
  • F
    5% (2)
  • G
    13% (5)

Explanation

RMAN's table recovery feature (Oracle 12c+) always creates or uses an auxiliary instance to restore the backup, extract the target table via Data Pump, and import it into the production database - making D unconditionally true. A is correct because SYSTEM is a regular administrative user whose tables are eligible for this feature. E is correct because you can target a recovery SCN or timestamp before the DDL change occurred, effectively rolling back the structural alteration.

Why the distractors are wrong:

  • B (SYS): SYS owns the core data dictionary itself; RMAN explicitly excludes SYS-owned objects from table recovery.
  • C & F (SYSTEM/SYSAUX tablespaces): Tables residing in these two special tablespaces are ineligible - RMAN table recovery is blocked for objects stored there, regardless of who owns them.
  • G (Standby database): Table recovery must target the primary database; it cannot be run against a standby.

Memory tip: Think of the restrictions as two axes - who (not SYS) and where (not SYSTEM/SYSAUX tablespace, not standby). If either axis is restricted, recovery is blocked. Everything else - SYSTEM user, DDL-altered tables, with a mandatory auxiliary instance - is fair game.

Topics

#RMAN table recovery#auxiliary instance#user/tablespace restrictions#DDL compatibility

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