試驗計划：先rman進行一個0級備份，插入表相關數據，再進行level 1級增量備份，進行rman恢復
實驗環境：歸檔模式下，oracle10.2.0.1
開始試驗：
1. rman level 0級備份
RMAN> backup incremental level 0 database; Starting backup at 02-DEC-13 using channel ORA_DISK_1 channel ORA_DISK_1: starting incremental level 0 datafile backupset channel ORA_DISK_1: specifying datafile(s) in backupset input datafile fno=00001 name=/u01/app/oracle/product/10.2.0/db_2/oradata/orcl/system01.dbf input datafile fno=00003 name=/u01/app/oracle/product/10.2.0/db_2/oradata/orcl/sysaux01.dbf input datafile fno=00002 name=/u01/app/oracle/product/10.2.0/db_2/oradata/orcl/undotbs01.dbf input datafile fno=00006 name=/u01/app/oracle/product/10.2.0/db_2/oradata/orcl/yn.dbf input datafile fno=00004 name=/u01/app/oracle/product/10.2.0/db_2/oradata/orcl/users01.dbf channel ORA_DISK_1: starting piece 1 at 02-DEC-13 channel ORA_DISK_1: finished piece 1 at 02-DEC-13 piece handle=/u01/app/oracle/flash_recovery_area/ORCL/backupset/2013_12_02/o1_mf_nnnd0_TAG20131202T222739_99s66wc3_.bkp tag=TAG20131202T222739 comment=NONE channel ORA_DISK_1: backup set complete, elapsed time: 00:02:06 channel ORA_DISK_1: starting incremental level 0 datafile backupset channel ORA_DISK_1: specifying datafile(s) in backupset including current control file in backupset including current SPFILE in backupset channel ORA_DISK_1: starting piece 1 at 02-DEC-13 channel ORA_DISK_1: finished piece 1 at 02-DEC-13 piece handle=/u01/app/oracle/flash_recovery_area/ORCL/backupset/2013_12_02/o1_mf_ncsn0_TAG20131202T222739_99s6bvm4_.bkp tag=TAG20131202T222739 comment=NONE channel ORA_DISK_1: backup set complete, elapsed time: 00:00:02 Finished backup at 02-DEC-13
2.插入相關表數據
SQL> select * from t1; ID NAME ---------- -------------------- 1 first 2 second SQL> insert into t1 values(3,'rman3'); 1 row created. SQL> commit; Commit complete. SQL> insert into t1 values(4,'rman4'); 1 row created. SQL> commit; Commit complete. SQL> alter system switch logfile; System altered. SQL> alter system checkpoint; System altered. SQL>
3.rman level 0級備份
RMAN> backup incremental level 1 database; Starting backup at 02-DEC-13 using channel ORA_DISK_1 channel ORA_DISK_1: starting incremental level 1 datafile backupset channel ORA_DISK_1: specifying datafile(s) in backupset input datafile fno=00001 name=/u01/app/oracle/product/10.2.0/db_2/oradata/orcl/system01.dbf input datafile fno=00003 name=/u01/app/oracle/product/10.2.0/db_2/oradata/orcl/sysaux01.dbf input datafile fno=00002 name=/u01/app/oracle/product/10.2.0/db_2/oradata/orcl/undotbs01.dbf input datafile fno=00006 name=/u01/app/oracle/product/10.2.0/db_2/oradata/orcl/yn.dbf input datafile fno=00004 name=/u01/app/oracle/product/10.2.0/db_2/oradata/orcl/users01.dbf channel ORA_DISK_1: starting piece 1 at 02-DEC-13 channel ORA_DISK_1: finished piece 1 at 02-DEC-13 piece handle=/u01/app/oracle/flash_recovery_area/ORCL/backupset/2013_12_02/o1_mf_nnnd1_TAG20131202T223244_99s6jfdz_.bkp tag=TAG20131202T223244 comment=NONE channel ORA_DISK_1: backup set complete, elapsed time: 00:00:25 channel ORA_DISK_1: starting incremental level 1 datafile backupset channel ORA_DISK_1: specifying datafile(s) in backupset including current control file in backupset including current SPFILE in backupset channel ORA_DISK_1: starting piece 1 at 02-DEC-13 channel ORA_DISK_1: finished piece 1 at 02-DEC-13 piece handle=/u01/app/oracle/flash_recovery_area/ORCL/backupset/2013_12_02/o1_mf_ncsn1_TAG20131202T223244_99s6k6o1_.bkp tag=TAG20131202T223244 comment=NONE channel ORA_DISK_1: backup set complete, elapsed time: 00:00:01 Finished backup at 02-DEC-13 RMAN>
4.查看此時的備份文件、關閉數據庫、重啟數據庫
[root@app 2013_12_02]# ll ?昏. 649132 -rw-r----- 1 oracle oinstall 7176192 12-02 22:29 o1_mf_ncsn0_TAG20131202T222739_99s6bvm4_.bkp -rw-r----- 1 oracle oinstall 7176192 12-02 22:33 o1_mf_ncsn1_TAG20131202T223244_99s6k6o1_.bkp -rw-r----- 1 oracle oinstall 649576448 12-02 22:29 o1_mf_nnnd0_TAG20131202T222739_99s66wc3_.bkp -rw-r----- 1 oracle oinstall 114688 12-02 22:33 o1_mf_nnnd1_TAG20131202T223244_99s6jfdz_.bkp
SQL> shutdown immediate Database closed. Database dismounted. ORACLE instance shut down. SQL> startup mount ORACLE instance started. Total System Global Area 599785472 bytes Fixed Size 2022632 bytes Variable Size 251659032 bytes Database Buffers 343932928 bytes Redo Buffers 2170880 bytes Database mounted.
5.rman恢復
RMAN> run { 2> allocate channel c1 type disk; 3> restore database; 4> recover database; 5> sql 'alter database open'; 6> } allocated channel: c1 channel c1: sid=156 devtype=DISK Starting restore at 02-DEC-13 channel c1: starting datafile backupset restore channel c1: specifying datafile(s) to restore from backup set restoring datafile 00001 to /u01/app/oracle/product/10.2.0/db_2/oradata/orcl/system01.dbf restoring datafile 00002 to /u01/app/oracle/product/10.2.0/db_2/oradata/orcl/undotbs01.dbf restoring datafile 00003 to /u01/app/oracle/product/10.2.0/db_2/oradata/orcl/sysaux01.dbf restoring datafile 00004 to /u01/app/oracle/product/10.2.0/db_2/oradata/orcl/users01.dbf restoring datafile 00006 to /u01/app/oracle/product/10.2.0/db_2/oradata/orcl/yn.dbf channel c1: reading from backup piece /u01/app/oracle/flash_recovery_area/ORCL/backupset/2013_12_02/o1_mf_nnnd0_TAG20131202T222739_99s66wc3_.bkp channel c1: restored backup piece 1 piece handle=/u01/app/oracle/flash_recovery_area/ORCL/backupset/2013_12_02/o1_mf_nnnd0_TAG20131202T222739_99s66wc3_.bkp tag=TAG20131202T222739 channel c1: restore complete, elapsed time: 00:00:25 Finished restore at 02-DEC-13 Starting recover at 02-DEC-13 channel c1: starting incremental datafile backupset restore channel c1: specifying datafile(s) to restore from backup set destination for restore of datafile 00001: /u01/app/oracle/product/10.2.0/db_2/oradata/orcl/system01.dbf destination for restore of datafile 00002: /u01/app/oracle/product/10.2.0/db_2/oradata/orcl/undotbs01.dbf destination for restore of datafile 00003: /u01/app/oracle/product/10.2.0/db_2/oradata/orcl/sysaux01.dbf destination for restore of datafile 00004: /u01/app/oracle/product/10.2.0/db_2/oradata/orcl/users01.dbf destination for restore of datafile 00006: /u01/app/oracle/product/10.2.0/db_2/oradata/orcl/yn.dbf channel c1: reading from backup piece /u01/app/oracle/flash_recovery_area/ORCL/backupset/2013_12_02/o1_mf_nnnd1_TAG20131202T223244_99s6jfdz_.bkp channel c1: restored backup piece 1 piece handle=/u01/app/oracle/flash_recovery_area/ORCL/backupset/2013_12_02/o1_mf_nnnd1_TAG20131202T223244_99s6jfdz_.bkp tag=TAG20131202T223244 channel c1: restore complete, elapsed time: 00:00:01 starting media recovery media recovery complete, elapsed time: 00:00:02 Finished recover at 02-DEC-13 sql statement: alter database open released channel: c1 RMAN>
6.查詢數據
[oracle@app ~]$ sqlplus / as sysdba SQL*Plus: Release 10.2.0.1.0 - Production on Mon Dec 2 22:52:49 2013 Copyright (c) 1982, 2005, Oracle. All rights reserved. Connected to: Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - 64bit Production With the Partitioning, OLAP and Data Mining options SQL> select * from t1; id name
---------------------
1 first
2 second
3 rman3
4 rman4
這里說一個我在進行此試驗時，遇到的一個另外問題：
level 1級備份操作后，進行了drop table t1；我以為利用 level 0+level 1 恢復時，rman只恢復到我level 1備份處，t1表的4條數據還是存在的。
但，當我這樣操作后，進行select × from t1 查詢時，發現提示該表不存在。
后來仔細想了想，當我利用recover database時，數據庫會自動讀取redo或者歸檔文件來進行drop table t1操作的。