单选题Which of the following represents the correct way to perform an online recovery of datafile 4, which is assigned to a tablespace called USERS?()A shutdown restore datafile 4; recover datafile 4; alter database open;B Sql alter database datafile 4 offline; restore datafile 4; recover datafile 4; alter database open;C Sql alter database datafile 4 offline; restore datafile 4; Sql alter database datafile 4 online;D Sql alter database datafile 4 offline; restore database datafile 4; recover database datafile 4;Sql alter database datafile 4 online;E Sql alter database datafile 4 offline; restore datafile 4; recover datafile 4; Sql alter database datafile 4 online;

单选题
Which of the following represents the correct way to perform an online recovery of datafile 4, which is assigned to a tablespace called USERS?()
A

 shutdown restore datafile 4; recover datafile 4; alter database open;

B

 Sql alter database datafile 4 offline; restore datafile 4; recover datafile 4; alter database open;

C

 Sql alter database datafile 4 offline; restore datafile 4; Sql alter database datafile 4 online;

D

 Sql alter database datafile 4 offline; restore database datafile 4; recover database datafile 4;Sql alter database datafile 4 online;

E

 Sql alter database datafile 4 offline; restore datafile 4; recover datafile 4; Sql alter database datafile 4 online;


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