97免费在线观看视频,亚洲综合自拍网,黄色毛片免费观看,热久久综合网,免费看日产一区二区三区 狠狠操av,久久久涩涩涩,在线精品免费视频,人人插天天干,久久91精品国产91久久

單項(xiàng)選擇題

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.

微信掃碼免費(fèi)搜題