ocp-270

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本文详细解析了SQL命令序列的作用，包括恢复用户表空间至特定时间点，使用辅助目的地，以及在线启用表空间操作。重点讨论了命令执行的流程和可能遇到的问题。

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QUESTION NO: 270
What is the end result of the following commands?
recover tablespace users
until time ?10/06/2008:22:42:00‘
auxiliary destination ?c:\oracle\auxiliary‘;
sql ‘alter tablespace users online‘; sql”
recover tablespace users恢复用户表空间
until time ?10/06/2008:20:40:00‘直到时间
auxiliary destination ?c:\oracle\auxiliary‘;辅助目的地
sql ‘alter tablespace users online‘; sql’改变用户表空间在线’
A. The commands will be successful. The USERS tablespace will be recovered until 10/06/2008 at
20:40.
B. The first recover tablespace command will fail because the syntax is incorrect.
C. The first alter tablespace users online command will fail because the tablespace will already be online
after the recover command.
The second recover tablespace command will fail because it will be unable to complete the recovery.

E. The second alter tablespace users online command will fail because you cannot perform two TSPITRs
in a row without backing up the database between the first and the last recovery.
Answer: D

下面的命令最终的结果是什么？

D.第二条恢复表空间命令会失败，因为无法完成恢复。