In your database, UNDO_RETENTION has been set to 600 sec and UNDO tablespace is configured for RETENTION GUARANTEE. Which statement regarding RETENTION GUARANTEE is true? ()
- A、Undo data is retained until the next full database backup.
- B、No committed undo data will be overwritten for 10 minutes.
- C、Committed undo data will be kept forever if not overwritten within 600 seconds.
- D、Guarantees that requested undo information are available until the instance is shut down.
正确答案:B
答案解析:有
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