OCP-1Z0-053-V12.02-175题

175.You are peer reviewing a fellow DBAs backup plan for his NOARCHIVELOG mode database, as

shown here:

Put the tablespaces in backup mode.

Back up the datafiles for all tablespaces.

Take the tablespaces out of backup mode.

Back up all archived redo logs.

Your colleague asks for you to comment on his plan. Which response would be correct?

A. The plan will work as is.

B. The plan needs to be modified to allow for an archive-log switch after step 3.

C. The plan needs to be modified so that a backup of the archived redo logs occurs before step 1.

D. The plan needs to be adjusted to shut down the database after step 1 and to restart the database after

step 2.

E. The plan cannot work as presented.

Answer: B

答案解析：

个人觉得这道题有问题，在非归档模式下，不能将表空间启动到备份模式，不能在切换日志时将日志归档等，错误如下,应该选E？

sys@TEST1107> startup mount

ORACLE instance started.

 

Total System Global Area 1269366784 bytes

Fixed Size                  2227984 bytes

Variable Size             872415472 bytes

Database Buffers          385875968 bytes

Redo Buffers                8847360 bytes

Database mounted.

sys@TEST1107> alter database noarchivelog;

 

Database altered.

 

sys@TEST1107> alter database open;

 

Database altered.

 

sys@TEST1107> alter tablespace users begin backup;

alter tablespace users begin backup

*

ERROR at line 1:

ORA-01123: cannot start online backup; media recovery not enabled