NOARCHIVELOG 模式下的数据库备份步骤

2009532140

最先答对且答案未经编辑的cuber将根据试题的难度可能获得10-50不等的积分悬赏：
注意：会员需对此贴答案进行说明和简要分析，无说明者不能获得奖励。
或者，给出相关的文档说明，如果能用实验模拟的积分翻倍。

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.