SQL> select name from v$datafile; NAME -------------------------------------------------------------------------------- /home/oradata/stuorcl/system01.dbf /home/oradata/stuorcl/sysaux01.dbf /home/oradata/stuorcl/undotbs01.dbf /home/oradata/stuorcl/users01.dbf /home/oradata/stuorcl/stuorclk01.dbf /home/oradata/stuorcl/plas01.dbf /home/oradata/stuorcl/pl01.dbf /home/oradata/stuorcl/help01.dbf /home/oradata/stuorcl/adobelc01.dbf /home/oradata/stuorcl/sms01.dbf 10 rows selected. SQL>
事先獲得redo日志文件路徑
SQL> select member from v$logfile; MEMBER -------------------------------------------------------------------------------- /home/oradata/stuorcl/redo03.log /home/oradata/stuorcl/redo02.log /home/oradata/stuorcl/redo01.log /home/oradata/stuorcl/redo_dg_01.log /home/oradata/stuorcl/redo_dg_02.log /home/oradata/stuorcl/redo_dg_03.log 6 rows selected. SQL>
1,nomount下創建控制文件;
[root@xuelong4 ~]# su - oracle [oracle@xuelong4 ~]$ sqlplus / as sysdba SQL*Plus: Release 11.2.0.1.0 Production on Wed Feb 4 13:48:23 2015 Copyright (c) 1982, 2009, Oracle. All rights reserved. Connected to: Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production With the Partitioning, OLAP, Data Mining and Real Application Testing options SQL> shutdown immediate Database closed. Database dismounted. ORACLE instance shut down. SQL>
2,啟動到nomount狀態
SQL> startup nomount ORACLE instance started. Total System Global Area 1.1358E+10 bytes Fixed Size 2216744 bytes Variable Size 8589937880 bytes Database Buffers 2751463424 bytes Redo Buffers 13946880 bytes SQL>
3,創建控制文件
CREATE CONTROLFILE REUSE set DATABASE "stuorcl" RESETLOGS ARCHIVELOG MAXLOGFILES 16 MAXLOGMEMBERS 3 MAXDATAFILES 100 MAXINSTANCES 8 MAXLOGHISTORY 454 DATAFILE '/home/oradata/stuorcl/system01.dbf', '/home/oradata/stuorcl/sysaux01.dbf', '/home/oradata/stuorcl/undotbs01.dbf', '/home/oradata/stuorcl/users01.dbf', '/home/oradata/stuorcl/stuorclk01.dbf', '/home/oradata/stuorcl/plas01.dbf', '/home/oradata/stuorcl/pl01.dbf', '/home/oradata/stuorcl/help01.dbf', '/home/oradata/stuorcl/adobelc01.dbf', '/home/oradata/stuorcl/sms01.dbf' LOGFILE GROUP 1 ('/home/oradata/stuorcl/redo03.log') SIZE 10M, GROUP 2 ('/home/oradata/stuorcl/redo02.log') SIZE 10M, GROUP 3 ('/home/oradata/stuorcl/redo01.log') SIZE 10M, GROUP 4 ('/home/oradata/stuorcl/redo_dg_01.log') SIZE 10M, GROUP 5 ('/home/oradata/stuorcl/redo_dg_02.log') SIZE 10M, GROUP 6 ('/home/oradata/stuorcl/redo_dg_03.log') SIZE 10M CHARACTER SET ZHS16GBK;
執行過程:
SQL> CREATE CONTROLFILE REUSE set DATABASE "stuorcl" RESETLOGS ARCHIVELOG MAXLOGFILES 16 MAXLOGMEMBERS 3 MAXDATAFILES 100 MAXINSTANCES 8 MAXLOGHISTORY 454 DATAFILE '/home/oradata/stuorcl/system01.dbf', '/home/oradata/stuorcl/sysaux01.dbf', '/home/oradata/stuorcl/undotbs01.dbf', '/home/oradata/stuorcl/users01.dbf', '/home/oradata/stuorcl/stuorclk01.dbf', '/home/oradata/stuorcl/plas01.dbf', '/home/oradata/stuorcl/pl01.dbf', '/home/oradata/stuorcl/help01.dbf', '/home/oradata/stuorcl/adobelc01.dbf', '/home/oradata/stuorcl/sms01.dbf' LOGFILE GROUP 1 ('/home/oradata/stuorcl/redo03.log') SIZE 10M, GROUP 2 ('/home/oradata/stuorcl/redo02.log') SIZE 10M, GROUP 3 ('/home/oradata/stuorcl/redo01.log') SIZE 10M, GROUP 4 ('/home/oradata/stuorcl/redo_dg_01.log') SIZE 10M, GROUP 5 ('/home/oradata/stuorcl/redo_dg_02.log') SIZE 10M, GROUP 6 ('/home/oradata/stuorcl/redo_dg_03.log') SIZE 10M CHARACTER SET ZHS16GBK; Control file created. SQL>
4,在新控制文件中注冊數據文件備份和歸檔備份 catalog start with '/oracle/app/oracle/flash_recovery_area/stuorcl/backupset/2015-01-23/'; 在mount狀態下執行
RMAN> catalog start with '/oracle/app/oracle/flash_recovery_area/stuorcl/backupset/2015-01-23/'; released channel: ORA_DISK_1 searching for all files that match the pattern /oracle/app/oracle/flash_recovery_area/stuorcl/backupset/2015-01-23/ List of Files Unknown to the Database ===================================== File Name: /oracle/app/oracle/flash_recovery_area/stuorcl/backupset/2015-01-23/full_stuorcl_20150123_3051.bak File Name: /oracle/app/oracle/flash_recovery_area/stuorcl/backupset/2015-01-23/rman_backup.log File Name: /oracle/app/oracle/flash_recovery_area/stuorcl/backupset/2015-01-23/arch_stuorcl_20150123_3050.bak File Name: /oracle/app/oracle/flash_recovery_area/stuorcl/backupset/2015-01-23/arch_stuorcl_20150123_3052.bak Do you really want to catalog the above files (enter YES or NO)? yes cataloging files... cataloging done List of Cataloged Files ======================= File Name: /oracle/app/oracle/flash_recovery_area/stuorcl/backupset/2015-01-23/full_stuorcl_20150123_3051.bak File Name: /oracle/app/oracle/flash_recovery_area/stuorcl/backupset/2015-01-23/arch_stuorcl_20150123_3050.bak File Name: /oracle/app/oracle/flash_recovery_area/stuorcl/backupset/2015-01-23/arch_stuorcl_20150123_3052.bak List of Files Which Where Not Cataloged ======================================= File Name: /oracle/app/oracle/flash_recovery_area/stuorcl/backupset/2015-01-23/rman_backup.log RMAN-07517: Reason: The file header is corrupted RMAN>
5,進行修復操作
RMAN> restore database; Starting restore at 04-FEB-15 allocated channel: ORA_DISK_1 channel ORA_DISK_1: SID=767 device type=DISK channel ORA_DISK_1: starting datafile backup set restore channel ORA_DISK_1: specifying datafile(s) to restore from backup set channel ORA_DISK_1: restoring datafile 00001 to /home/oradata/stuorcl/system01.dbf channel ORA_DISK_1: restoring datafile 00002 to /home/oradata/stuorcl/sysaux01.dbf channel ORA_DISK_1: restoring datafile 00003 to /home/oradata/stuorcl/undotbs01.dbf channel ORA_DISK_1: restoring datafile 00004 to /home/oradata/stuorcl/users01.dbf channel ORA_DISK_1: restoring datafile 00005 to /home/oradata/stuorcl/stuorclk01.dbf channel ORA_DISK_1: restoring datafile 00006 to /home/oradata/stuorcl/plas01.dbf channel ORA_DISK_1: restoring datafile 00007 to /home/oradata/stuorcl/pl01.dbf channel ORA_DISK_1: restoring datafile 00008 to /home/oradata/stuorcl/help01.dbf channel ORA_DISK_1: restoring datafile 00009 to /home/oradata/stuorcl/adobelc01.dbf channel ORA_DISK_1: restoring datafile 00010 to /home/oradata/stuorcl/sms01.dbf channel ORA_DISK_1: reading from backup piece /oracle/app/oracle/flash_recovery_area/stuorcl/backupset/2015-01-23/full_stuorcl_20150123_3051.bak channel ORA_DISK_1: piece handle=/oracle/app/oracle/flash_recovery_area/stuorcl/backupset/2015-01-23/full_stuorcl_20150123_3051.bak tag=TAG20150123T030053 channel ORA_DISK_1: restored backup piece 1 channel ORA_DISK_1: restore complete, elapsed time: 00:45:45 Finished restore at 04-FEB-15 RMAN>
此時去看oracle後台的alert日志,正在一個個修復數據文件,信息如下:
[root@xuelong4 trace]# tail -f /oracle/app/oracle/diag/rdbms/stuunq/stuorcl/trace/alert_stuorcl.log GROUP 5 ('/home/oradata/stuorcl/redo_dg_02.log') SIZE 10M, GROUP 6 ('/home/oradata/stuorcl/redo_dg_03.log') SIZE 10M CHARACTER SET ZHS16GBK Wed Feb 04 17:05:40 2015 alter database mount ORA-1100 signalled during: alter database mount ... Wed Feb 04 17:05:55 2015 alter database mount ORA-1100 signalled during: alter database mount... Wed Feb 04 17:08:38 2015 Full restore complete of datafile 8 /home/oradata/stuorcl/help01.dbf. Elapsed time: 0:00:02 checkpoint is 10903299975 last deallocation scn is 9881798870 Full restore complete of datafile 9 /home/oradata/stuorcl/adobelc01.dbf. Elapsed time: 0:00:00 checkpoint is 10903299975 Wed Feb 04 17:08:53 2015 Full restore complete of datafile 10 /home/oradata/stuorcl/sms01.dbf. Elapsed time: 0:00:07 checkpoint is 10903299975 Wed Feb 04 17:09:52 2015 Full restore complete of datafile 7 /home/oradata/stuorcl/pl01.dbf. Elapsed time: 0:00:46 checkpoint is 10903299975 last deallocation scn is 10891613103 Wed Feb 04 17:12:41 2015 Full restore complete of datafile 3 /home/oradata/stuorcl/undotbs01.dbf. Elapsed time: 0:03:28 checkpoint is 10903299975 last deallocation scn is 10903242336 Undo Optimization current scn is 10903252140 Wed Feb 04 17:14:00 2015 Full restore complete of datafile 4 /home/oradata/stuorcl/users01.dbf. Elapsed time: 0:05:26 checkpoint is 10903299975 last deallocation scn is 10893349080 Wed Feb 04 17:17:52 2015 Full restore complete of datafile 1 /home/oradata/stuorcl/system01.dbf. Elapsed time: 0:08:11 checkpoint is 10903299975 last deallocation scn is 10825889348 Undo Optimization current scn is 10903252140 Wed Feb 04 17:20:27 2015 db_recovery_file_dest_size of 15360 MB is 0.00% used. This is a user-specified limit on the amount of space that will be used by this database for recovery-related files, and does not reflect the amount of space available in the underlying filesystem or ASM diskgroup. Wed Feb 04 17:20:40 2015 Full restore complete of datafile 2 /home/oradata/stuorcl/sysaux01.dbf. Elapsed time: 0:12:02 checkpoint is 10903299975 last deallocation scn is 10901674267 ........
6,開始恢復操作
RMAN> recover database; Starting recover at 04-FEB-15 using channel ORA_DISK_1 starting media recovery channel ORA_DISK_1: starting archived log restore to default destination channel ORA_DISK_1: restoring archived log archived log thread=1 sequence=29053 channel ORA_DISK_1: reading from backup piece /oracle/app/oracle/flash_recovery_area/stuorcl/backupset/2015-01-23/arch_stuorcl_20150123_3052.bak channel ORA_DISK_1: piece handle=/oracle/app/oracle/flash_recovery_area/stuorcl/backupset/2015-01-23/arch_stuorcl_20150123_3052.bak tag=TAG20150123T032709 channel ORA_DISK_1: restored backup piece 1 channel ORA_DISK_1: restore complete, elapsed time: 00:00:02 archived log file name=/oracle/app/oracle/flash_recovery_area/archivelog/1_29053_821708334.dbf thread=1 sequence=29053 unable to find archived log archived log thread=1 sequence=29054 RMAN-00571: =========================================================== RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS =============== RMAN-00571: =========================================================== RMAN-03002: failure of recover command at 02/04/2015 16:19:14 RMAN-06054: media recovery requesting unknown archived log for thread 1 with sequence 29054 and starting SCN of 10903302108 RMAN>
在11g官方文檔error messages中對錯誤描述如下:
RMAN-06054: media recovery requesting unknown archived log for thread string with sequence string and starting SCN of string Cause: Media recovery is requesting a log whose existence is not recorded in the recovery catalog or target database control file. Action: If a copy of the log is available, then add it to the recovery catalog and/or control file via a CATALOG command and then retry the RECOVER command. If not, then a point-in-time recovery up to the missing log is the only alternative and database can be opened using ALTER DATABASE OPEN RESETLOGS command.
可見,出先此錯誤的原因是恢復需要的日志記錄在控制文件或恢復目錄中找不到。解決方法分兩種情況: 1.如果相關的日志存在且可用的話,就將此日志記錄添加到控制文件或恢復目錄中。 2.如果相關的日志已經被刪除了或不可用了,那麼就按照錯誤的提示scn將數據庫恢復到此scn,本案例是10903302108。也就是說此時數據庫只能進行不完全恢復了,在打開數據庫時得使用resetlogs打開。
recover database until scn 10903302108; RMAN> recover database until scn 10903302108; Starting recover at 04-FEB-15 using channel ORA_DISK_1 RMAN-00571: =========================================================== RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS =============== RMAN-00571: =========================================================== RMAN-03002: failure of recover command at 02/04/2015 16:30:30 RMAN-20208: UNTIL CHANGE is before RESETLOGS change RMAN> List of Database Incarnations DB Key Inc Key DB Name DB ID STATUS Reset SCN Reset Time ------- ------- -------- ---------------- --- ---------- ---------- 2 2 stuorcl 3391761643 PARENT 945184 25-JUL-13 1 1 stuorcl 3391761643 CURRENT 10909913627 02-FEB-15 RMAN>
google下,看到http://blog.itpub.net/26442936/viewspace-767439/上面有說明
RMAN> reset database to incarnation 2; RMAN> restore database until scn 1045382; RMAN> recover database until scn 1045382; SQL> alter database open resetlogs;
的方式,不過我的incarnation 2已經是2013年的太早了,這種方式不適合。 嘗試rman的不完全恢復記錄,切換到SQL窗口去:
SQL> recover database using backup controlfile until cancel; ORA-00279: change 10903299975 generated at 01/23/2015 03:00:53 needed for thread 1 ORA-00289: suggestion : /oracle/app/oracle/flash_recovery_area/archivelog/1_29053_821708334.dbf ORA-00280: change 10903299975 for thread 1 is in sequence #29053 Specify log: {<RET>=suggested | filename | AUTO | CANCEL} ORA-00279: change 10903302108 generated at 01/23/2015 03:27:09 needed for thread 1 ORA-00289: suggestion : /oracle/app/oracle/flash_recovery_area/archivelog/1_29054_821708334.dbf ORA-00280: change 10903302108 for thread 1 is in sequence #29054 ORA-00278: log file '/oracle/app/oracle/flash_recovery_area/archivelog/1_29053_821708334.dbf' no longer needed for this recovery Specify log: {<RET>=suggested | filename | AUTO | CANCEL} auto ORA-00308: cannot open archived log '/oracle/app/oracle/flash_recovery_area/archivelog/1_29054_821708334.dbf' ORA-27037: unable to obtain file status Linux-x86_64 Error: 2: No such file or directory Additional information: 3 ORA-00308: cannot open archived log '/oracle/app/oracle/flash_recovery_area/archivelog/1_29054_821708334.dbf' ORA-27037: unable to obtain file status Linux-x86_64 Error: 2: No such file or directory Additional information: 3 SQL> SQL> alter database open resetlogs; Database altered. SQL>
7,去後台驗證下數據,找一張一直有日期變化的表數據:
SQL> select to_char(a.last_login_date,'yyyy-mm-dd hh24:mi:ss') from stu.pst_ac a where to_char(a.last_login_date,'yyyy-mm-dd hh24:mi:ss')>'2015-01-23 00:00:00:00' order by to_char(a.last_login_date,'yyyy-mm-dd hh24:mi:ss') desc; TO_CHAR(A.LAST_LOGI ------------------- 2015-01-23 03:10:38 2015-01-23 02:36:13 2015-01-23 01:47:36 2015-01-23 01:29:14 2015-01-23 01:27:41 2015-01-23 01:09:21 2015-01-23 00:52:14 2015-01-23 00:44:52 2015-01-23 00:43:46 2015-01-23 00:32:37 2015-01-23 00:31:59 TO_CHAR(A.LAST_LOGI ------------------- 2015-01-23 00:30:44 2015-01-23 00:27:27 2015-01-23 00:23:20 2015-01-23 00:18:53 2015-01-23 00:17:46 2015-01-23 00:13:25 2015-01-23 00:00:15 18 rows selected. SQL>
看到最新為1月23日的數據,表明恢復的數據已經是1月23日的。
去[oracle@xuelong4 admin]$ sqlplus elearning/plel0328@SC_SID; SQL*Plus: Release 11.2.0.1.0 Production on Wed Feb 4 19:03:56 2015 Copyright (c) 1982, 2009, Oracle. All rights reserved. Connected to: Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production With the Partitioning, OLAP, Data Mining and Real Application Testing options SQL> select ut.TABLE_NAME from user_tables ut where rownum<3;