Which two statements

题目

Which two statements are true regarding the database in ARCHIVELOG mode?()

  • A、You have to shut down the database to perform the backups.
  • B、Archiving information is written to the data files and redo log files.
  • C、You can perform complete database backups without closing the database.
  • D、Online redo log files have to be multiplexed before putting the database in ARCHIVELOG mode.
  • E、All the previous database backups become invalid after you configure the database to ARCHIVELOG mode.
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