29、Which two are true about undo tablespaces?
A) They always retain undo for the time period defined by UNDO_RETENTION.
B) They must have only one data file.
C) They can be recovered only when an Instance Is In MOUNT state.
D) Tables can be created In undo tablespaces by SYS.
E) Single-Instance databases can have only one active undo tablespace.
Answer:CE
北京CUUG整理，转载请注明，OCP讨论群：569933648/836361015
来自 “ ITPUB博客 ” ，链接：https://blog.itpub.net/31550393/viewspace-2213527/ ，如需转载，请注明出处，否则将追究法律责任。
请登录后发表评论
登录
全部评论
