Examine the command:
SQL> RECOVER DATABASE USING BACKUP CONTROLFILE UNTIL CANCEL;
In which two scenarios is this command required?
A.
The current online redo log file is missing.
B.
A data file belonging to a noncritical tablespace is missing.
C.
All the control files are missing.
D.
The database backup is older than the control file backup.
E.
All the data files are missing.
Explanation:
http://searchoracle.techtarget.com/answer/Recover-database-using-backup-controlfile-until-cancel