oracle11g rman验证备份有效性

RMAN> restore validate controlfile;

Starting restore at 21-NOV-13
using target database control file instead of recovery catalog
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=71 device type=DISK

channel ORA_DISK_1: starting validation of datafile backup set
channel ORA_DISK_1: reading from backup piece /u01/archivelog/YOON/autobackup/2013_11_13/o1_mf_s_831423038_988l4gmq_.bkp
channel ORA_DISK_1: piece handle=/u01/archivelog/YOON/autobackup/2013_11_13/o1_mf_s_831423038_988l4gmq_.bkp tag=TAG20131113T225038
channel ORA_DISK_1: restored backup piece 1
channel ORA_DISK_1: validation complete, elapsed time: 00:00:01
Finished restore at 21-NOV-13

RMAN> restore validate spfile;

Starting restore at 21-NOV-13
using channel ORA_DISK_1

channel ORA_DISK_1: starting validation of datafile backup set
channel ORA_DISK_1: reading from backup piece /u01/archivelog/YOON/autobackup/2013_11_13/o1_mf_s_831423038_988l4gmq_.bkp
channel ORA_DISK_1: piece handle=/u01/archivelog/YOON/autobackup/2013_11_13/o1_mf_s_831423038_988l4gmq_.bkp tag=TAG20131113T225038
channel ORA_DISK_1: restored backup piece 1
channel ORA_DISK_1: validation complete, elapsed time: 00:00:01
Finished restore at 21-NOV-13

RMAN> restore validate database;

Starting restore at 21-NOV-13
using channel ORA_DISK_1

datafile 5 will be created automatically during restore operation
datafile 7 will be created automatically during restore operation
channel ORA_DISK_1: starting validation of datafile backup set
channel ORA_DISK_1: reading from backup piece /u01/oracle/fast_recovery_area/YOON/backupset/2013_09_08/o1_mf_nnndf_TAG20130908T223042_92tdpm3t_.bkp
channel ORA_DISK_1: piece handle=/u01/oracle/fast_recovery_area/YOON/backupset/2013_09_08/o1_mf_nnndf_TAG20130908T223042_92tdpm3t_.bkp tag=TAG20130908T223042
channel ORA_DISK_1: restored backup piece 1
channel ORA_DISK_1: validation complete, elapsed time: 00:00:15
failover to previous backup

datafile 5 will be created automatically during restore operation
datafile 7 will be created automatically during restore operation
Finished restore at 21-NOV-13