703. Given below are RMAN commands to enable ba ckup optimization and set the retention policy:
The USERS tablespace has never been backed up. Y ou take the USERS tablespace offline on Monday.
View the Exhibit to examine the operations performed by using RMAN. Which two statements are true
about the backup of the USERS tablespace? (ChoZ喎?http://www.Bkjia.com/kf/ware/vc/" target="_blank" class="keylink">vc2UgdHdvLik8L3A+CjxwPiA8aW1nIHNyYz0="http://www.2cto.com/uploadfile/Collfiles/20140225/2014022509062220.jpg" alt="">
A.It will be backed up as a part of database backup on Friday.
B.It will be backed up as a part of database backup on Tuesday.
C.It will not be backed up as a part of database backup on Wednesday.
D.The command on Sunday deletes the backup of the USERS tablespace taken on Tuesday.
Answer: AB
答案解析：
The USERS tablespace has never been backed up. Y ou take the USERS tablespace offline on Monday。
又因為 configurre backup optimization on,即在備份時跳過offline或者read_only的數據。
在星期二備份時，因為之前沒有備份，故在星期二時要備份一下。之後即不再備份了。故B正確，A錯誤。C正確。
而D答案，命令，刪除過期備份，因為users表空間只有一次備份，故根據冗余2的備份策略，不存在過期的問題。
故正確答案選BC
