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        丟失了所有控制文件副本后進行恢復以trace文件恢復

        來源:懂視網 責編:小采 時間:2020-11-09 14:39:35
        文檔

        丟失了所有控制文件副本后進行恢復以trace文件恢復

        丟失了所有控制文件副本后進行恢復以trace文件恢復:實驗:基于trace的控制文件重建及數(shù)據庫回復(所有控制文件丟失等) 1.測試數(shù)據的構造,創(chuàng)建只讀表空間 create tablespace tbs_users datafile /u01/app/oracle/oradata/PROD/datafile/tbs_users1.dbf size 5m, /u01/a
        推薦度:
        導讀丟失了所有控制文件副本后進行恢復以trace文件恢復:實驗:基于trace的控制文件重建及數(shù)據庫回復(所有控制文件丟失等) 1.測試數(shù)據的構造,創(chuàng)建只讀表空間 create tablespace tbs_users datafile /u01/app/oracle/oradata/PROD/datafile/tbs_users1.dbf size 5m, /u01/a

        實驗:基于trace的控制文件重建及數(shù)據庫回復(所有控制文件丟失等) 1.測試數(shù)據的構造,創(chuàng)建只讀表空間 create tablespace tbs_users datafile /u01/app/oracle/oradata/PROD/datafile/tbs_users1.dbf size 5m, /u01/app/oracle/oradata/PROD/datafile/tbs_us

        實驗:基于trace的控制文件重建及數(shù)據庫回復(所有控制文件丟失等)

        1.測試數(shù)據的構造,創(chuàng)建只讀表空間
        create tablespace tbs_users datafile
        '/u01/app/oracle/oradata/PROD/datafile/tbs_users1.dbf' size 5m,
        '/u01/app/oracle/oradata/PROD/datafile/tbs_users2.dbf' size 5m;

        alter tablesapce tbs_users read only;

        2.控制文件的轉儲
        select name from v$controlfile;
        --查看控制文件狀態(tài)

        轉儲:
        oradebug setmypid;
        alter database backup controlfile to trace;
        oradebug tracefile_name;

        3.刪除控制文件
        !rm /u01/app/oracle/oradata/PROD/control*.ctl
        --若閃回區(qū)也有控制文件副本,一并刪除;

        alter system checkpoint;
        create tablespace ts1 datafile '/u01/app/oracle/oradata/PROD/datafile/ts1.dbf' size 5m;
        --觸發(fā)錯誤
        shutdown immeidate/abort
        startup
        ORA-00205:error in identifying control file;
        check alert log for more info;


        4.使用轉儲的跟蹤文件進行控制文件重建
        查看跟蹤文件內容,確定使用noresetlogs進行重建

        相關腳本:
        -- Set #1. NORESETLOGS case
        STARTUP NOMOUNT
        CREATE CONTROLFILE REUSE DATABASE "PROD" NORESETLOGS ARCHIVELOG
        MAXLOGFILES 16
        MAXLOGMEMBERS 3
        MAXDATAFILES 100
        MAXINSTANCES 8
        MAXLOGHISTORY 292
        LOGFILE
        GROUP 1 (
        '/u01/app/oracle/oradata/PROD/onlinelog/o1_mf_1_b395d7z0_.log',
        '/u01/app/oracle/fast_recovery_area/PROD/onlinelog/o1_mf_1_b395df1j_.log'
        ) SIZE 50M BLOCKSIZE 512,
        GROUP 2 (
        '/u01/app/oracle/oradata/PROD/onlinelog/o1_mf_2_b395dlrd_.log',
        '/u01/app/oracle/fast_recovery_area/PROD/onlinelog/o1_mf_2_b395dqql_.log'
        ) SIZE 50M BLOCKSIZE 512,
        GROUP 3 (
        '/u01/app/oracle/oradata/PROD/onlinelog/o1_mf_3_b395dwfk_.log',
        '/u01/app/oracle/fast_recovery_area/PROD/onlinelog/o1_mf_3_b395f1j7_.log'
        ) SIZE 50M BLOCKSIZE 512

        DATAFILE
        '/u01/app/oracle/oradata/PROD/datafile/o1_mf_system_b393xosc_.dbf',
        '/u01/app/oracle/oradata/PROD/datafile/o1_mf_sysaux_b393xovt_.dbf',
        '/u01/app/oracle/oradata/PROD/datafile/o1_mf_undotbs1_b393xq2d_.dbf',
        '/u01/app/oracle/oradata/PROD/datafile/o1_mf_users_b393xqpm_.dbf',
        '/u01/app/oracle/oradata/PROD/datafile/o1_mf_example_b393xp04_.dbf'
        CHARACTER SET AL32UTF8
        ;

        RECOVER DATABASE
        --如果數(shù)據庫非正常關閉,需要恢復數(shù)據庫;

        ALTER SYSTEM ARCHIVE LOG ALL;

        ALTER DATABASE OPEN;
        --如果有創(chuàng)建的測試數(shù)據文件需要處理,則可以先跳過(以先打開數(shù)據庫為準);
        alter database datafile file_id offline;

        ALTER DATABASE RENAME FILE 'MISSING00006'
        TO '/u01/app/oracle/oradata/PROD/datafile/tbs_users1.dbf';
        ALTER DATABASE RENAME FILE 'MISSING00007'
        TO '/u01/app/oracle/oradata/PROD/datafile/tbs_users2.dbf';

        ALTER TABLESPACE "TBS_USERS" ONLINE;

        ALTER TABLESPACE TEMP ADD TEMPFILE '/u01/app/oracle/oradata/PROD/datafile/o1_mf_temp_b29o0g6r_.tmp'
        SIZE 20971520 REUSE AUTOEXTEND ON NEXT 655360 MAXSIZE 32767M;


        備注:
        1.只讀狀態(tài)的表空間,在利用跟蹤文件后,其數(shù)據文件名稱會發(fā)生變化,需要rename操作;
        2.臨時表空間,在利用trace重建控制文件后,其臨時文件會丟失,需要重新添加或重建臨時表空間;
        3.在轉儲控制文件之后新創(chuàng)建的臨時表空間,當我們重建控制文件后,這些表空間的數(shù)據文件,也需要進行處理;
        4.可以利用rman中的命令來查看當前數(shù)據庫數(shù)據文件和臨時文 report schema
        5.ODU 數(shù)據庫恢復工具

        具體實驗:

        5.1. 丟失了所有控制文件副本后進行恢復

        注 在利用trace備份恢復控制文件的時候,有以下要特別注意:

        - 只讀表空間

        - 臨時表空間

        - 離線表空間

        1) 準備只讀表空間環(huán)境

        SYS@ORA11GR2>create tablespace ts_users datafile '/u01/app/oracle/oradata/ORA11GR2/ts_users01.dbf' size 5m,'/u01/app/oracle/oradata/ORA11GR2/ts_users02.dbf' size 5m;

        Tablespace created.

        SYS@ORA11GR2>col tablespace_name for a15

        SYS@ORA11GR2>select tablespace_name,status from dba_tablespaces;

        TABLESPACE_NAME STATUS

        --------------- ---------

        SYSTEM ONLINE

        SYSAUX ONLINE

        UNDOTBS1 ONLINE

        TEMP ONLINE

        USERS ONLINE

        EXAMPLE ONLINE

        TS_USERS ONLINE

        7 rows selected.

        SYS@ORA11GR2>

        SYS@ORA11GR2>select file_name,status,online_status from dba_data_files;

        FILE_NAME STATUS ONLINE_

        ----------------------------------------------- --------- -------

        /u01/app/oracle/oradata/ORA11GR2/users01.dbf AVAILABLE ONLINE

        /u01/app/oracle/oradata/ORA11GR2/undotbs01.dbf AVAILABLE ONLINE

        /u01/app/oracle/oradata/ORA11GR2/sysaux01.dbf AVAILABLE ONLINE

        /u01/app/oracle/oradata/ORA11GR2/system01.dbf AVAILABLE SYSTEM

        /u01/app/oracle/oradata/ORA11GR2/example01.dbf AVAILABLE ONLINE

        /u01/app/oracle/oradata/ORA11GR2/ts_users01.dbf AVAILABLE ONLINE

        /u01/app/oracle/oradata/ORA11GR2/ts_users02.dbf AVAILABLE ONLINE

        7 rows selected.

        SYS@ORA11GR2>

        SYS@ORA11GR2>alter tablespace ts_users read only;

        Tablespace altered.

        SYS@ORA11GR2>select tablespace_name,status from dba_tablespaces;

        TABLESPACE_NAME STATUS

        --------------- ---------

        SYSTEM ONLINE

        SYSAUX ONLINE

        UNDOTBS1 ONLINE

        TEMP ONLINE

        USERS ONLINE

        EXAMPLE ONLINE

        TS_USERS READ ONLY

        7 rows selected.

        SYS@ORA11GR2>select file_name,status,online_status from dba_data_files;

        FILE_NAME STATUS ONLINE_

        ----------------------------------------------- --------- -------

        /u01/app/oracle/oradata/ORA11GR2/users01.dbf AVAILABLE ONLINE

        /u01/app/oracle/oradata/ORA11GR2/undotbs01.dbf AVAILABLE ONLINE

        /u01/app/oracle/oradata/ORA11GR2/sysaux01.dbf AVAILABLE ONLINE

        /u01/app/oracle/oradata/ORA11GR2/system01.dbf AVAILABLE SYSTEM

        /u01/app/oracle/oradata/ORA11GR2/example01.dbf AVAILABLE ONLINE

        /u01/app/oracle/oradata/ORA11GR2/ts_users01.dbf AVAILABLE ONLINE

        /u01/app/oracle/oradata/ORA11GR2/ts_users02.dbf AVAILABLE ONLINE

        7 rows selected.

        SYS@ORA11GR2>

        2) 查看控制文件位置

        SYS@ORA11GR2>select name from v$controlfile;

        NAME

        --------------------------------------------------------------------------

        /u01/app/oracle/oradata/ORA11GR2/control01.ctl

        /u01/app/oracle/oradata/ORA11GR2/control02.ctl

        SYS@ORA11GR2>

        3) 轉儲控制文件到trace文件中

        SYS@ORA11GR2>oradebug setmypid

        Statement processed.

        SYS@ORA11GR2>alter database backup controlfile to trace;

        Database altered.

        SYS@ORA11GR2>oradebug tracefile_name

        /u01/app/oracle/diag/rdbms/ora11gr2/ORA11GR2/trace/ORA11GR2_ora_30816.trc

        SYS@ORA11GR2>

        4) 打開轉儲后文件,以下為部分內容

        [oracle@ocmu ~]$

        cat /u01/app/oracle/diag/rdbms/ora11gr2/ORA11GR2/trace/ORA11GR2_ora

        ……

        -- Set #1. NORESETLOGS case

        --

        -- The following commands will create a new control file and use it

        -- to open the database.

        -- Data used by Recovery Manager will be lost.

        -- Additional logs may be required for media recovery of offline

        -- Use this only if the current versions of all online logs are

        -- available.

        -- After mounting the created controlfile, the following SQL

        -- statement will place the database in the appropriate

        -- protection mode:

        -- ALTER DATABASE SET STANDBY DATABASE TO MAXIMIZE PERFORMANCE

        STARTUP NOMOUNT

        CREATE CONTROLFILE REUSE DATABASE "ORA11GR2" NORESETLOGS NOARCHIVELOG

        MAXLOGFILES 16

        MAXLOGMEMBERS 3

        MAXDATAFILES 100

        MAXINSTANCES 8

        MAXLOGHISTORY 292

        LOGFILE

        GROUP 1 '/u01/app/oracle/oradata/ORA11GR2/redo01.log' SIZE 50M BLOCKSIZE 512,

        GROUP 2 '/u01/app/oracle/oradata/ORA11GR2/redo02.log' SIZE 50M BLOCKSIZE 512,

        GROUP 3 '/u01/app/oracle/oradata/ORA11GR2/redo03.log' SIZE 50M BLOCKSIZE 512

        -- STANDBY LOGFILE

        DATAFILE

        '/u01/app/oracle/oradata/ORA11GR2/system01.dbf',

        '/u01/app/oracle/oradata/ORA11GR2/sysaux01.dbf',

        '/u01/app/oracle/oradata/ORA11GR2/undotbs01.dbf',

        '/u01/app/oracle/oradata/ORA11GR2/users01.dbf',

        '/u01/app/oracle/oradata/ORA11GR2/example01.dbf'

        CHARACTER SET AL32UTF8

        ;

        ……

        -- ALTER DATABASE REGISTER LOGFILE '/u01/app/oracle/product/11.2.0/db_1/dbs/arch1_1_694825248.dbf';

        -- ALTER DATABASE REGISTER LOGFILE '/u01/app/oracle/product/11.2.0/db_1/dbs/arch1_1_799882343.dbf';

        -- Recovery is required if any of the datafiles are restored backups,

        -- or if the last shutdown was not normal or immediate.

        RECOVER DATABASE

        -- Database can now be opened normally.

        ALTER DATABASE OPEN;

        -- Files in read-only tablespaces are now named.

        ALTER DATABASE RENAME FILE 'MISSING00006'

        TO '/u01/app/oracle/oradata/ORA11GR2/ts_users01.dbf';

        ALTER DATABASE RENAME FILE 'MISSING00007'

        TO '/u01/app/oracle/oradata/ORA11GR2/ts_users02.dbf';

        -- Online the files in read-only tablespaces.

        ALTER TABLESPACE "TS_USERS" ONLINE;

        -- Commands to add tempfiles to temporary tablespaces.

        -- Online tempfiles have complete space information.

        -- Other tempfiles may require adjustment.

        ALTER TABLESPACE TEMP ADD TEMPFILE '/u01/app/oracle/oradata/ORA11GR2/temp01.dbf'

        SIZE 30408704 REUSE AUTOEXTEND ON NEXT 655360 MAXSIZE 32767M;

        -- End of tempfile additions.

        ……

        注 在轉儲的控制文件中,沒有只讀表空間的內容

        本測試,是先生成轉儲文件,再恢復的,往往在控制文件丟失之前很少會有人轉儲控制文件的(當然

        了,一般情況都會備份控制文件的),如果沒有轉儲控制文件的話,我們也可以在其他數(shù)據庫中轉儲

        控制文件,按照目標庫的情況進行調整,然后再創(chuàng)建。

        5) 手工刪除控制文件

        [oracle@ocmu ORA11GR2]$ pwd

        /u01/app/oracle/oradata/ORA11GR2

        [oracle@ocmu ORA11GR2]$ ls *.ctl

        control01.ctl control02.ctl

        [oracle@ocmu ORA11GR2]$ rm *.ctl

        [oracle@ocmu ORA11GR2]$ ls *.ctl

        ls: *.ctl: No such file or directory

        [oracle@ocmu ORA11GR2]$

        6) 控制文件刪除以后,數(shù)據庫是可以正常登陸的

        [oracle@ocmu ORA11GR2]$ sqlplus / as sysdba

        SQL*Plus: Release 11.2.0.1.0 Production on Tue Jan 15 16:09:53 2013

        Copyright (c) 1982, 2009, Oracle. All rights reserved.

        Connected to:

        Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production

        With the Partitioning, OLAP, Data Mining and Real Application Testing options

        SYS@ORA11GR2>

        7) 當修改結構信息時,會寫控制文件,我們創(chuàng)建一個表空間,立即報錯

        SYS@ORA11GR2> create tablespace ts_idx datafile '/u01/app/oracle/oradata/

        ORA11GR2/ts_idx01.dbf' size 10m;

        create tablespace ts_idx datafile '/u01/app/oracle/oradata/ORA11GR2/ts_idx01.dbf' size 10m

        *

        ERROR at line 1:

        ORA-00210: cannot open the specified control file

        ORA-00202: control file: '/u01/app/oracle/oradata/ORA11GR2/control01.ctl'

        ORA-27041: unable to open file

        Linux Error: 2: No such file or directory

        Additional information: 3

        SYS@ORA11GR2>

        8) 一致性關閉數(shù)據庫已經不可能了(控制文件丟失,無法同步SCN),采取強制手段

        SYS@ORA11GR2>shutdow immediate;

        ORA-00210: cannot open the specified control file

        ORA-00202: control file: '/u01/app/oracle/oradata/ORA11GR2/control01.ctl'

        ORA-27041: unable to open file

        Linux Error: 2: No such file or directory

        Additional information: 3

        SYS@ORA11GR2>

        SYS@ORA11GR2>shutdown abort;

        ORACLE instance shut down.

        SYS@ORA11GR2>

        9) 按照轉儲文件中的步驟恢復控制文件,nomount啟動數(shù)據庫

        SYS@ORA11GR2>startup nomount;

        ORACLE instance started.

        Total System Global Area 841162752 bytes

        Fixed Size 1339768 bytes

        Variable Size 494931592 bytes

        Database Buffers 339738624 bytes

        Redo Buffers 5152768 bytes

        SYS@ORA11GR2>

        10) 采用NORESETLOGS創(chuàng)建控制文件

        SYS@ORA11GR2>CREATE CONTROLFILE REUSE DATABASE "ORA11GR2" NORESETLOGS NOARCHIVELOG

        2 MAXLOGFILES 16

        3 MAXLOGMEMBERS 3

        4 MAXDATAFILES 100

        5 MAXINSTANCES 8

        6 MAXLOGHISTORY 292

        7 LOGFILE

        8 GROUP 1 '/u01/app/oracle/oradata/ORA11GR2/redo01.log' SIZE 50M BLOCKSIZE 512,

        9 GROUP 2 '/u01/app/oracle/oradata/ORA11GR2/redo02.log' SIZE 50M BLOCKSIZE 512,

        10 GROUP 3 '/u01/app/oracle/oradata/ORA11GR2/redo03.log' SIZE 50M BLOCKSIZE 512

        11 -- STANDBY LOGFILE

        12 DATAFILE

        13 '/u01/app/oracle/oradata/ORA11GR2/system01.dbf',

        14 '/u01/app/oracle/oradata/ORA11GR2/sysaux01.dbf',

        15 '/u01/app/oracle/oradata/ORA11GR2/undotbs01.dbf',

        16 '/u01/app/oracle/oradata/ORA11GR2/users01.dbf',

        17 '/u01/app/oracle/oradata/ORA11GR2/example01.dbf'

        18 CHARACTER SET AL32UTF8

        19 ;

        Control file created.

        SYS@ORA11GR2>

        11) 因為之前shutdown沒有采取一致性關閉,所以,需要recover database,recover后,可正常open數(shù)據庫

        SYS@ORA11GR2>alter database open;

        alter database open

        *

        ERROR at line 1:

        ORA-01113: file 1 needs media recovery

        ORA-01110: data file 1: '/u01/app/oracle/oradata/ORA11GR2/system01.dbf'

        SYS@ORA11GR2>recover database;

        Media recovery complete.

        SYS@ORA11GR2>

        SYS@ORA11GR2>alter database open;

        Database altered.

        SYS@ORA11GR2>!ls *.ctl

        control01.ctl control02.ctl

        SYS@ORA11GR2>

        看似已恢復完成,不過,很清晰的看到,轉儲的控制文件中,還有幾步沒有完成,我們繼續(xù)

        12) 再次查看表空間和數(shù)據文件狀態(tài)

        我們可以看到,只讀表空間的狀態(tài)依然是read only,不過數(shù)據文件的路徑、名字及狀態(tài)都有所變化

        SYS@ORA11GR2>select tablespace_name,status from dba_tablespaces;

        TABLESPACE_NAME STATUS

        --------------- ---------

        SYSTEM ONLINE

        SYSAUX ONLINE

        UNDOTBS1 ONLINE

        TEMP ONLINE

        USERS ONLINE

        EXAMPLE ONLINE

        TS_USERS READ ONLY

        7 rows selected.

        SYS@ORA11GR2>col file_name for a52

        SYS@ORA11GR2>select file_name,status,online_status from dba_data_files;

        FILE_NAME STATUS ONLINE_

        ---------------------------------------------------- --------- -------

        /u01/app/oracle/oradata/ORA11GR2/example01.dbf AVAILABLE ONLINE

        /u01/app/oracle/oradata/ORA11GR2/users01.dbf AVAILABLE ONLINE

        /u01/app/oracle/oradata/ORA11GR2/undotbs01.dbf AVAILABLE ONLINE

        /u01/app/oracle/oradata/ORA11GR2/sysaux01.dbf AVAILABLE ONLINE

        /u01/app/oracle/oradata/ORA11GR2/system01.dbf AVAILABLE SYSTEM

        /u01/app/oracle/product/11.2.0/db_1/dbs/MISSING00006 AVAILABLE OFFLINE

        /u01/app/oracle/product/11.2.0/db_1/dbs/MISSING00007 AVAILABLE OFFLINE

        7 rows selected.

        SYS@ORA11GR2>

        13) 按照轉儲的步驟繼續(xù)rename數(shù)據文件

        注:如果不rename數(shù)據文件的話,數(shù)據文件是沒法ONLINE的

        SYS@ORA11GR2>ALTER DATABASE RENAME FILE 'MISSING00006'

        TO '/u01/app/oracle/oradata/ORA11GR2/ts_users01.dbf';

        Database altered.

        SYS@ORA11GR2>ALTER DATABASE RENAME FILE 'MISSING00007'

        TO '/u01/app/oracle/oradata/ORA11GR2/ts_users02.dbf';

        Database altered.

        SYS@ORA11GR2>

        14) 按照轉儲步驟,修改表空間online

        SYS@ORA11GR2>ALTER TABLESPACE "TS_USERS" ONLINE;

        Tablespace altered.

        SYS@ORA11GR2>

        15) 再次查看表空間、數(shù)據文件的狀態(tài),已經徹底恢復原貌

        SYS@ORA11GR2>select tablespace_name,status from dba_tablespaces;

        TABLESPACE_NAME STATUS

        --------------- ---------

        SYSTEM ONLINE

        SYSAUX ONLINE

        UNDOTBS1 ONLINE

        TEMP ONLINE

        USERS ONLINE

        EXAMPLE ONLINE

        TS_USERS READ ONLY

        7 rows selected.

        SYS@ORA11GR2>select file_name,status,online_status from dba_data_files;

        FILE_NAME STATUS ONLINE_

        ---------------------------------------------------- --------- -------

        /u01/app/oracle/oradata/ORA11GR2/example01.dbf AVAILABLE ONLINE

        /u01/app/oracle/oradata/ORA11GR2/users01.dbf AVAILABLE ONLINE

        /u01/app/oracle/oradata/ORA11GR2/undotbs01.dbf AVAILABLE ONLINE

        /u01/app/oracle/oradata/ORA11GR2/sysaux01.dbf AVAILABLE ONLINE

        /u01/app/oracle/oradata/ORA11GR2/system01.dbf AVAILABLE SYSTEM

        /u01/app/oracle/oradata/ORA11GR2/ts_users01.dbf AVAILABLE ONLINE

        /u01/app/oracle/oradata/ORA11GR2/ts_users02.dbf AVAILABLE ONLINE

        7 rows selected.

        SYS@ORA11GR2>

        16) 轉儲步驟中還涉及到了臨時表空間,我們驗證一下,重建控制文件后,臨時表空間的情況,沒有任何數(shù)據文件

        SYS@ORA11GR2>select file_name,tablespace_name from dba_temp_files;

        no rows selected

        SYS@ORA11GR2>

        17) 按照轉儲中的語句給臨時表空間增加數(shù)據文件

        SYS@ORA11GR2>ALTER TABLESPACE TEMP

        ADD TEMPFILE '/u01/app/oracle/oradata/ORA11GR2/temp01.dbf'

        SIZE 30408704 REUSE AUTOEXTEND ON NEXT 655360 MAXSIZE 32767M;

        Tablespace altered.

        SYS@ORA11GR2>

        18) 臨時文件已添加成功

        SYS@ORA11GR2>select FILE_NAME,TABLESPACE_NAME from dba_temp_files;

        FILE_NAME TABLESPACE_NAME

        ---------------------------------------------------- ---------------

        /u01/app/oracle/oradata/ORA11GR2/temp01.dbf TEMP

        SYS@ORA11GR2>

        至此,控制文件恢復完畢

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        文檔

        丟失了所有控制文件副本后進行恢復以trace文件恢復

        丟失了所有控制文件副本后進行恢復以trace文件恢復:實驗:基于trace的控制文件重建及數(shù)據庫回復(所有控制文件丟失等) 1.測試數(shù)據的構造,創(chuàng)建只讀表空間 create tablespace tbs_users datafile /u01/app/oracle/oradata/PROD/datafile/tbs_users1.dbf size 5m, /u01/a
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