關(guān)于rman的，
環(huán)境：
oracle 10.2.0
rman nocatalog方式
1、首先設(shè)置
CONFIGURE CONTROLFILE AUTOBACKUP ON;
然后進(jìn)行數(shù)據(jù)庫(kù)全備份
RMAN> backup database;

Starting backup at 21-APR-10
using channel ORA_SBT_TAPE_1
channel ORA_SBT_TAPE_1: starting full datafile backupset
channel ORA_SBT_TAPE_1: specifying datafile(s) in backupset
input datafile fno=00001 name=/opt/oracle/oradata/test/system01.dbf
input datafile fno=00003 name=/opt/oracle/oradata/test/sysaux01.dbf
input datafile fno=00002 name=/opt/oracle/oradata/test/undotbs01.dbf
input datafile fno=00004 name=/opt/oracle/oradata/test/users01.dbf
input datafile fno=00005 name=/opt/oracle/oradata/test/a1.dbf
channel ORA_SBT_TAPE_1: starting piece 1 at 21-APR-10
channel ORA_SBT_TAPE_1: finished piece 1 at 21-APR-10
piece handle=2ilbml4g_1_1 tag=TAG20100421T162551 comment=API Version 2.0,MMS Version 5.0.0.0
channel ORA_SBT_TAPE_1: backup set complete, elapsed?time: 00:00:45
Finished backup at 21-APR-10

Starting Control File and SPFILE Autobackup at 21-APR-10
piece handle=c-2011851712-20100421-06 comment=API Version 2.0,MMS Version 5.0.0.0
Finished Control File and SPFILE Autobackup at 21-APR-10

可以看見(jiàn)對(duì)controlfile和spfile進(jìn)行了備份，并且可以驗(yàn)證：
RMAN> list backup of controlfile;


List of Backup Sets
===================

BS Key??Type LV Size???????Device Type Elapsed Time Completion Time
------- ---- -- ---------- ----------- ------------ ---------------
73??????Full????7.00M??????SBT_TAPE????00:00:31?????21-APR-10??????
????????BP Key: 73???Status: AVAILABLE??Compressed: NO??Tag: TAG20100421T162007
????????Handle: 2hlbmkr5_1_1???Media: @aaaab
??Control File Included: Ckp SCN: 597114???????Ckp time: 21-APR-10

BS Key??Type LV Size???????Device Type Elapsed Time Completion Time

2、再設(shè)置
CONFIGURE CONTROLFILE AUTOBACKUP OFF;

同樣的備份

RMAN> backup database;

Starting backup at 21-APR-10
released channel: ORA_DISK_1
using channel ORA_SBT_TAPE_1
channel ORA_SBT_TAPE_1: starting full datafile backupset
channel ORA_SBT_TAPE_1: specifying datafile(s) in backupset
input datafile fno=00001 name=/opt/oracle/oradata/test/system01.dbf
input datafile fno=00003 name=/opt/oracle/oradata/test/sysaux01.dbf
input datafile fno=00002 name=/opt/oracle/oradata/test/undotbs01.dbf
input datafile fno=00004 name=/opt/oracle/oradata/test/users01.dbf
input datafile fno=00005 name=/opt/oracle/oradata/test/a1.dbf
channel ORA_SBT_TAPE_1: starting piece 1 at 21-APR-10
channel ORA_SBT_TAPE_1: finished piece 1 at 21-APR-10
piece handle=2glbmkpn_1_1 tag=TAG20100421T162007 comment=API Version 2.0,MMS Version 5.0.0.0
channel ORA_SBT_TAPE_1: backup set complete, elapsed time: 00:00:46
channel ORA_SBT_TAPE_1: starting full datafile backupset
channel ORA_SBT_TAPE_1: specifying datafile(s) in backupset
including current control file in backupset
including current SPFILE in backupset
channel ORA_SBT_TAPE_1: starting piece 1 at 21-APR-10
channel ORA_SBT_TAPE_1: finished piece 1 at 21-APR-10
piece handle=2hlbmkr5_1_1 tag=TAG20100421T162007 comment=API Version 2.0,MMS Version 5.0.0.0
channel ORA_SBT_TAPE_1: backup set complete, elapsed time: 00:00:36
Finished backup at 21-APR-10
好像也對(duì)controlfile和spfile進(jìn)行了備份
驗(yàn)證
RMAN> list backup of controlfile;


List of Backup Sets
===================

BS Key??Type LV Size???????Device Type Elapsed Time Completion Time
------- ---- -- ---------- ----------- ------------ ---------------
73??????Full????7.00M??????SBT_TAPE????00:00:31?????21-APR-10??????
????????BP Key: 73???Status: AVAILABLE??Compressed: NO??Tag: TAG20100421T162007
????????Handle: 2hlbmkr5_1_1???Media: @aaaab
??Control File Included: Ckp SCN: 597114???????Ckp time: 21-APR-10

BS Key??Type LV Size???????Device Type Elapsed Time Completion Time
------- ---- -- ---------- ----------- ------------ ---------------
75??????Full????7.00M??????SBT_TAPE????00:00:33?????21-APR-10??????
????????BP Key: 75???Status: AVAILABLE??Compressed: NO??Tag: TAG20100421T162637
????????Handle: c-2011851712-20100421-06???Media: @aaaab
??Control File Included: Ckp SCN: 597334???????Ckp time: 21-APR-10

兩種方式都進(jìn)行了controlfile和spfile的備份，但不知道其中有何不同？ 自動(dòng)備份打開時(shí)，會(huì)在把數(shù)據(jù)文件，日志文件，控制文件，SPfile等等都備份完了后，再自動(dòng)備份一遍當(dāng)前的控制文件。因?yàn)槟阍谏厦娴膫浞萃瓿珊?#xff0c;控制文件里面記載的信息就發(fā)生了變化的，自動(dòng)備份就會(huì)把它備一遍。
自動(dòng)備份關(guān)閉時(shí)，就不會(huì)最后再備一遍了。

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