-Are using Recovery Manager(RMAN) with a recovery catalog to perform the backup operation at regular intervals

-Set the control file autobackup to on

-Are maintaining image copies of the database files

-You have lost the server parameter tile(SPFILE)and the control file.

Which option must you consider before restoring the SPFILE and the control file by using the control file autobackup?

A. setting DBID for the database

B. using the RMAN SWITCH command

C. using the RMAN SWITCH command

D. starting up the database Instance In the NOMOUNT state

答案：（A）

解析:

（对于CATALOG方式，SPFILE的恢复相对简单很多。不过Oracle文档上对于SPFILE的恢复的描述有些小问题：SET DBID这个步骤是不能省略的，否则会报错。