---

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.

---

出自：Oracle认证

显示答案