053-627

In Recovery Manager (RMAN), you are taking image copies of the data files of your production
database and rolling them forward at regular intervals. You attempt to restart your database. After a regular maintenance task, you realize that one of the data files that belongs to the USERS tablespace is damaged and you need to recover the data file by using the image copy. Because a media failure caused the data file to be damaged, you want to place the data file in a different location while restoing the file.
Which option must you consider for this task?
A. using only the RMAN SWITCH command to set the new location for the data file
B. placing the database in the MOUNT state for the restore and recovery operations.
C. using an RMAN RUN block with the SET NEWNAME and then the SWITCH command.
D. configuring two channels: one for the restore operation and the other for the recovery operation

由于是使用的镜像拷贝，所以可以使用 switch 来进行重建。如果想重建到新的位置，在 switch 之前使用set NEWNAME 来配置新的路径。 C 正确，A 错误
例如：
RUN
{
SQL "ALTER TABLESPACE users OFFLINE IMMEDIATE";
SET NEWNAME FOR DATAFILE '/disk1/oradata/prod/users01.dbf'
TO '/disk2/users01.dbf';
RESTORE TABLESPACE users;
SWITCH DATAFILE ALL;
RECOVER TABLESPACE users;
SQL "ALTER TABLESPACE users ONLINE";
}