参考视频:
vedios->[bbk1824]
数据库最重要的是数据，数据最重要的就是可靠性，不能丢失.
RMAN产生的一些备份信息，存储在控制文件当中.也就是说，在没有catalog的情况下，rman的备份信息是存放在controlfile当中的.
RMAN备份
非catalog方式:
- 全备份
- 0级增量备份
- 1几增量备份
RMAN>backup incremental level 0 database;
RMAN> backup incremental level 0 database; Starting backup at 2013/07/10 10:20:23 allocated channel: ORA_DISK_1 channel ORA_DISK_1: SID=33 instance=devdb1 device type=DISK channel ORA_DISK_1: starting incremental level 0 datafile backup set channel ORA_DISK_1: specifying datafile(s) in backup set input datafile file number=00007 name=+DATA/devdb/datafile/app_mis.275.820345293 input datafile file number=00001 name=+DATA/devdb/datafile/system.256.820154751 input datafile file number=00002 name=+DATA/devdb/datafile/sysaux.257.820154753 input datafile file number=00005 name=+DATA/devdb/datafile/example.264.820154917 input datafile file number=00003 name=+DATA/devdb/datafile/undotbs1.258.820154753 input datafile file number=00006 name=+DATA/devdb/datafile/undotbs2.265.820155189 input datafile file number=00004 name=+DATA/devdb/datafile/users.259.820154753 channel ORA_DISK_1: starting piece 1 at 2013/07/10 10:20:25 channel ORA_DISK_1: finished piece 1 at 2013/07/10 10:25:40 piece handle=+FLASH/devdb/backupset/2013_07_10/nnndn0_tag20130710t102024_0.351.820405229 tag=TAG20130710T102024 comment=NONE channel ORA_DISK_1: backup set complete, elapsed time: 00:05:15 channel ORA_DISK_1: starting incremental level 0 datafile backup set channel ORA_DISK_1: specifying datafile(s) in backup set including current control file in backup set including current SPFILE in backup set channel ORA_DISK_1: starting piece 1 at 2013/07/10 10:25:44 channel ORA_DISK_1: finished piece 1 at 2013/07/10 10:25:47 piece handle=+FLASH/devdb/backupset/2013_07_10/ncsnn0_tag20130710t102024_0.352.820405545 tag=TAG20130710T102024 comment=NONE channel ORA_DISK_1: backup set complete, elapsed time: 00:00:03 Finished backup at 2013/07/10 10:25:47 RMAN>