RMAN恢復案例:丟失全部資料檔案恢復
RMAN恢復案例:丟失全部資料檔案恢復
1、模擬資料檔案丟失:
SQL> shutdown immediate
Database closed.
Database dismounted.
ORACLE instance shut down.
SQL> host rm /u01/oracle/oradata/XUE/*.dbf
控制檔案、日誌檔案必須存在。
SQL> host ls /u01/oracle/oradata/XUE/
archive control01.ctl control02.ctl control03.ctl redo01.log redo02.log
2、資料庫啟動報錯:
SQL> startup
ORACLE instance started.
Total System Global Area 64033912 bytes
Fixed Size 451704 bytes
Variable Size 37748736 bytes
Database Buffers 25165824 bytes
Redo Buffers 667648 bytes
Database mounted.
ORA-01157: cannot identify/lock data file 1 - see DBWR trace file
ORA-01110: data file 1: '/u01/oracle/oradata/XUE/system01.dbf'
3、檢視恢復檔案狀態:
SQL> select * from v$recover_file;
FILE# ONLINE ONLINE_
---------- ------- -------
ERROR CHANGE#
----------------------------------------------------------------- ----------
TIME
---------
1 ONLINE ONLINE
FILE NOT FOUND 0
2 ONLINE ONLINE
FILE NOT FOUND 0
FILE# ONLINE ONLINE_
---------- ------- -------
ERROR CHANGE#
----------------------------------------------------------------- ----------
TIME
---------
3 ONLINE ONLINE
FILE NOT FOUND 0
4 ONLINE ONLINE
FILE NOT FOUND 0
FILE# ONLINE ONLINE_
---------- ------- -------
ERROR CHANGE#
----------------------------------------------------------------- ----------
TIME
---------
SQL> host rman target /
Recovery Manager: Release 9.2.0.4.0 - Production
Copyright (c) 1995, 2002, Oracle Corporation. All rights reserved.
connected to target database: XUE (DBID=285819149)
4、從有效備份中恢復:
RMAN> run {
2> allocate channel c1 type disk;
3> restore database;
4> recover database;
5> sql 'alter database open';
6> release channel c1 ;
7> }
using target database controlfile instead of recovery catalog
allocated channel: c1
channel c1: sid=14 devtype=DISK
Starting restore at 05-JAN-05
channel c1: starting datafile backupset restore
channel c1: specifying datafile(s) to restore from backup set
restoring datafile 00002 to /u01/oracle/oradata/XUE/undotbs01.dbf
restoring datafile 00003 to /u01/oracle/oradata/XUE/indx01.dbf
restoring datafile 00004 to /u01/oracle/oradata/XUE/users01.dbf
channel c1: restored backup piece 1
piece handle=/opt/rman_backup/df_546708956_8_1 tag=TAG20050104T153556 params=NULL
channel c1: restore complete
channel c1: starting datafile backupset restore
channel c1: specifying datafile(s) to restore from backup set
restoring datafile 00001 to /u01/oracle/oradata/XUE/system01.dbf
channel c1: restored backup piece 1
piece handle=/opt/rman_backup/0ag9c7q1_1_1 tag=TAG20050104T154153 params=NULL
channel c1: restore complete
Finished restore at 05-JAN-05
Starting recover at 05-JAN-05
starting media recovery
archive log thread 1 sequence 66 is already on disk as file /u01/oracle/oradata/XUE/archive/66.arc
archive log thread 1 sequence 67 is already on disk as file /u01/oracle/oradata/XUE/archive/67.arc
archive log thread 1 sequence 68 is already on disk as file /u01/oracle/oradata/XUE/archive/68.arc
archive log thread 1 sequence 69 is already on disk as file /u01/oracle/oradata/XUE/archive/69.arc
archive log thread 1 sequence 70 is already on disk as file /u01/oracle/oradata/XUE/archive/70.arc
archive log thread 1 sequence 71 is already on disk as file /u01/oracle/oradata/XUE/archive/71.arc
archive log thread 1 sequence 72 is already on disk as file /u01/oracle/oradata/XUE/archive/72.arc
archive log filename=/u01/oracle/oradata/XUE/archive/66.arc thread=1 sequence=66
archive log filename=/u01/oracle/oradata/XUE/archive/67.arc thread=1 sequence=67
archive log filename=/u01/oracle/oradata/XUE/archive/68.arc thread=1 sequence=68
archive log filename=/u01/oracle/oradata/XUE/archive/69.arc thread=1 sequence=69
archive log filename=/u01/oracle/oradata/XUE/archive/70.arc thread=1 sequence=70
archive log filename=/u01/oracle/oradata/XUE/archive/71.arc thread=1 sequence=71
media recovery complete
Finished recover at 05-JAN-05
sql statement: alter database open
released channel: c1
RMAN> exit
Recovery Manager complete.
5、驗證恢復:
SQL> select count(*) from t;
COUNT(*)
----------
6143
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