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Oracle认证考试

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You are working on a database that must be functioning 24 hours a day, 7 days a week. The database isconfigured in ARCHIVELOG mode. Which two options do you have for performing user-managed backups()

  • A、You can perform consistent backups only.
  • B、You can perform a complete database backup without shutting down the database instance.
  • C、You can back up data files only when all data files have the same SCN recorded in the control file.
  • D、You can back up only those data files whose headers are frozen by using ALTER TABLESPACE BEGINBACKUP or ALTER DATABASE BEGIN BACKUP commands
正确答案:B,D
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