053(六十五）

321.True or false: RMAN offers the equivalent of the SQL command alter database backup controlfile to trace.
A. True
B. False

322.You need to restore your database back to 9/30/2008 at 18:00. 
In what order would you run the following commands to compete this task?
A. restore controlfile until time ‘09/30/2008:18:00:00‘;
B. restore database until time ‘09/30/2008:18:00:00‘;
C. restore spfile until time ‘09/30/2008:18:00:00‘;;
D. recover database until time ‘09/30/2008:18:00:00‘;
E. alter database open resetlogs; 
F. alter database open;
G. b, d, e
H. b, d, f
I. c, a, b, d, e
J. c, a, b, d, f
K. a, b, d, e

323.What is the correct order of the following commands if you wanted to restore datafile 4, 
which was accidentally removed from the file system?
A. sql ‘alter database datafile 4 online‘;
B. restore datafile 4;
C. recover datafile 4;
D. sql ‘alter database datafile 4 offline‘;
E. startup
F. shutdown
G. a, c, b, d
H. d, b, c, a
I. f, d, b, c, a, e
J. c, a, b, d, f
K. a, b, d, e

324.Your database is up and running and one of your three control files is accidentally erased. 
You start RMAN and run the following command:
RESTORE CONTROLFILE FROM AUTOBACKUP;
Which of the following statements is true? (Choose all that apply.)
A. The command restores only the missing control file.
B. The command restores all the control files.
C. The command fails because the database is running.
D. This is the correct way to address this problem.
E. This is not the correct way to address this problem.

325.Which of the following are valid until command options when attempting point-in-time recovery in RMAN? (Choose all that apply.)
A. until time
B. until change
C. until sequence
D. until SCN
E. until commit