只有DBF的恢复
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时间：2015年06月12日
只有dbf的恢复
灾难场景：
1. ctl，redo，spfile丢失，dbf未丢失，无备份
2. ctl，redo，spfile，dbf均丢失，有备份但无ctl备份
实验一：ctl，redo，spfile丢失，dbf未丢失，无备份，数据库正常关闭
SQL> shutdown immediate
[oracle@baobao ~]$ cd $ORACLE_HOME/dbs/
[oracle@baobao dbs]$ cat initdong.ora
*.control_files=‘/u01/app/oracle/oradata/dong/control01.ctl‘,‘/u01/app/oracle/flash_recovery_area/dong/control02.ctl‘#Restore Controlfile<BR>*.db_name=‘dong‘<BR>*._allow_resetlogs_corruption=TRUE
[oracle@baobao dbs]$ sqlplus / as sysdba
SQL>startup nomount pfile=‘$ORACLE_HOME/dbs/initdong.ora‘;
SQL>CREATE CONTROLFILE REUSE DATABASE "DONG" NORESETLOGS ARCHIVELOG MAXLOGFILES 16 MAXLOGMEMBERS 3 MAXDATAFILES 100 MAXINSTANCES 8 MAXLOGHISTORY 292 LOGFILE GROUP 1 ‘/u01/app/oracle/oradata/dong/redo01.log‘ SIZE 50M BLOCKSIZE 512, GROUP 2 ‘/u01/app/oracle/oradata/dong/redo02.log‘ SIZE 50M BLOCKSIZE 512, GROUP 3 ‘/u01/app/oracle/oradata/dong/redo03.log‘ SIZE 50M BLOCKSIZE 512 -- STANDBY LOGFILE DATAFILE ‘/u01/app/oracle/oradata/dong/system01.dbf‘, ‘/u01/app/oracle/oradata/dong/sysaux01.dbf‘, ‘/u01/app/oracle/oradata/dong/undotbs01.dbf‘, ‘/u01/app/oracle/oradata/dong/users01.dbf‘ CHARACTER SET WE8MSWIN1252 ; Control file created.
SQL> alter database open;<BR>
SQL> create table t2149 as select * from dba_objects; Table created. SQL> shutdown abort
[oracle@baobao ~]$ cd $ORACLE_HOME/dbs/ [oracle@baobao dbs]$ vi initdong.ora *.control_files=‘/u01/app/oracle/oradata/dong/control01.ctl‘,‘/u01/app/oracle/flash_recovery_area/dong/control02.ctl‘#Restore Controlfile *.db_name=‘dong‘ [oracle@baobao dbs]$ sqlplus / as sysdba SQL> startup nomount pfile=‘$ORACLE_HOME/dbs/initdong.ora‘; SQL> CREATE CONTROLFILE REUSE DATABASE "DONG" NORESETLOGS ARCHIVELOG MAXLOGFILES 16 MAXLOGMEMBERS 3 MAXDATAFILES 100 MAXINSTANCES 8 MAXLOGHISTORY 292 LOGFILE GROUP 1 ‘/u01/app/oracle/oradata/dong/redo01.log‘ SIZE 50M BLOCKSIZE 512, GROUP 2 ‘/u01/app/oracle/oradata/dong/redo02.log‘ SIZE 50M BLOCKSIZE 512, GROUP 3 ‘/u01/app/oracle/oradata/dong/redo03.log‘ SIZE 50M BLOCKSIZE 512 -- STANDBY LOGFILE DATAFILE ‘/u01/app/oracle/oradata/dong/system01.dbf‘, ‘/u01/app/oracle/oradata/dong/sysaux01.dbf‘, ‘/u01/app/oracle/oradata/dong/undotbs01.dbf‘, ‘/u01/app/oracle/oradata/dong/users01.dbf‘ CHARACTER SET WE8MSWIN1252 ; Control file created. SQL> select name,status from v$datafile; NAME STATUS -------------------------------------------------- ------- /u01/app/oracle/oradata/dong/system01.dbf SYSTEM /u01/app/oracle/oradata/dong/sysaux01.dbf RECOVER /u01/app/oracle/oradata/dong/undotbs01.dbf RECOVER /u01/app/oracle/oradata/dong/users01.dbf RECOVER
SQL> recover database until cancel; ORA-00279: change 1382526 generated at 11/26/2013 20:04:55 needed for thread 1 ORA-00289: suggestion : /u01/app/oracle/product/11.2.0/dbhome_1/dbs/arch1_3_832524557.dbf ORA-00280: change 1382526 for thread 1 is in sequence # Specify log: {<RET>=suggested | filename | AUTO | CANCEL} cancel ORA-10879: error signaled in parallel recovery slave ORA-01547: warning: RECOVER succeeded but OPEN RESETLOGS would get error below ORA-01194: file 1 needs more recovery to be consistent ORA-01110: data file 1: ‘/u01/app/oracle/oradata/dong/system01.dbf‘ ORA-10878: parallel recovery slave died unexpectedly SQL> alter database open resetlogs; alter database open resetlogs * ERROR at line 1: ORA-01092: ORACLE instance terminated. Disconnection forced ORA-00600: internal error code, arguments: [2662], [0], [1382534], [0], [1382569], [4194432], [], [], [], [], [], [] Process ID: 3170 Session ID: 87 Serial number: 3
SQL> recover database until cancel; ORA-00279: change 1381057 generated at 11/26/2013 21:49:09 needed for thread 1 ORA-00289: suggestion : /u01/app/oracle/product/11.2.0/dbhome_1/dbs/arch1_1_832542546.dbf ORA-00280: change 1381057 for thread 1 is in sequence #1 Specify log: {<RET>=suggested | filename | AUTO | CANCEL} cancel ORA-10879: error signaled in parallel recovery slave ORA-01547: warning: RECOVER succeeded but OPEN RESETLOGS would get error below ORA-01194: file 1 needs more recovery to be consistent ORA-01110: data file 1: ‘/u01/app/oracle/oradata/dong/system01.dbf‘ ORA-10878: parallel recovery slave died unexpectedly SQL> alter database open resetlogs; Database altered. SQL> select count(*) from t2149 ; select count(*) from t2149 * ERROR at line 1: ORA-00942: table or view does not exist
实验三：ctl，redo，spfile，dbf均丢失，有备份但无ctl备份
对于紧紧有dbf的备份，但没有ctl备份的情况，肯定是需要重建ctl了，那如果ctl重建的话，就肯定查不到dbf的备份信息，在这种情况下，恢复如下：
[oracle@baobao dong]$ ll 总用量 1850616 -rw-r-----. 1 oracle oinstall 10076160 11月 26 21:58 control01.ctl -rw-r-----. 1 oracle oinstall 10559488 11月 25 21:09 ff.dbf -rw-r-----. 1 oracle oinstall 52429312 11月 26 21:58 redo01.log -rw-r-----. 1 oracle oinstall 52429312 11月 26 21:51 redo02.log -rw-r-----. 1 oracle oinstall 52429312 11月 26 21:51 redo03.log -rw-r-----. 1 oracle oinstall 492838912 11月 26 21:58 sysaux01.dbf -rw-r-----. 1 oracle oinstall 996155392 11月 26 21:58 system01.dbf -rw-r-----. 1 oracle oinstall 20979712 10月 25 12:23 temp011.dbf -rw-r-----. 1 oracle oinstall 20979712 10月 22 13:54 temp01.dbf -rw-r-----. 1 oracle oinstall 214966272 11月 26 21:58 undotbs01.dbf -rw-r-----. 1 oracle oinstall 10559488 11月 26 21:58 users01.dbf [oracle@baobao dong]$ rm -rf * [oracle@baobao ~]$ cd $ORACLE_HOME/dbs/ [oracle@baobao dbs]$ vi initdong.ora *.control_files=‘/u01/app/oracle/oradata/dong/control01.ctl‘,‘/u01/app/oracle/flash_recovery_area/dong/control02.ctl‘#Restore Controlfile *.db_name=‘dong‘ [oracle@baobao dbs]$ sqlplus / as sysdba SQL> startup nomount pfile=‘$ORACLE_HOME/dbs/initdong.ora‘; SQL> CREATE CONTROLFILE REUSE DATABASE "DONG" NORESETLOGS ARCHIVELOG MAXLOGFILES 16 3 MAXLOGMEMBERS 3 4 MAXDATAFILES 100 5 MAXINSTANCES 8 6 MAXLOGHISTORY 292 7 LOGFILE 8 GROUP 1 ‘/u01/app/oracle/oradata/dong/redo01.log‘ SIZE 50M BLOCKSIZE 512, 9 GROUP 2 ‘/u01/app/oracle/oradata/dong/redo02.log‘ SIZE 50M BLOCKSIZE 512, 10 GROUP 3 ‘/u01/app/oracle/oradata/dong/redo03.log‘ SIZE 50M BLOCKSIZE 512 11 -- STANDBY LOGFILE 12 DATAFILE 13 ‘/u01/app/oracle/oradata/dong/system01.dbf‘, 14 ‘/u01/app/oracle/oradata/dong/sysaux01.dbf‘, 15 ‘/u01/app/oracle/oradata/dong/undotbs01.dbf‘, 16 ‘/u01/app/oracle/oradata/dong/users01.dbf‘ 17 CHARACTER SET WE8MSWIN1252 ; CREATE CONTROLFILE REUSE DATABASE "DONG" NORESETLOGS ARCHIVELOG * ERROR at line 1: ORA-01503: CREATE CONTROLFILE failed ORA-01565: error in identifying file ‘/u01/app/oracle/oradata/dong/system01.dbf‘--这里很是不解啊？为啥创建ctl的时候会去检查各个dbf是否存在呢，而且还会读取文件的内容 ORA-27037: unable to obtain file status Linux Error: 2: No such file or directory Additional information: 3
恢复控制文件：
SQL> declare 2 devtype varchar2(256); 3 done boolean; 4 begin 5 devtype:=sys.dbms_backup_restore.deviceAllocate(type=>‘‘,ident=>‘T1‘); 6 sys.dbms_backup_restore.restoresetdatafile; 7 sys.dbms_backup_restore.restorecontrolfileto(cfname=>‘/u01/app/oracle/oradata/dong/control01.ctl‘); sys.dbms_backup_restore.restorebackuppiece(done=>done,handle=>‘/u01/app/oracle/flash_recovery_area/DONG/autobackup/2013_11_27/o1_mf_s_832590070_99br9o1s_.bkp‘,params=>null); 9 sys.dbms_backup_restore.devicedeallocate; 10 end; 11 / PL/SQL procedure successfully completed. SQL> !ls -l -rw-r-----. 1 oracle oinstall 10141696 11月 29 16:21 control01.ctl SQL> alter database mount; Database altered. [oracle@baobao dong]$ rman target / Recovery Manager: Release 11.2.0.1.0 - Production on Fri Nov 29 16:22:42 2013 Copyright (c) 1982, 2009, Oracle and/or its affiliates. All rights reserved. connected to target database: DONG (DBID=2075447482, not open) RMAN> list backup; using target database control file instead of recovery catalog List of Backup Sets =================== BS Key Type LV Size Device Type Elapsed Time Completion Time ------- ---- -- ---------- ----------- ------------ --------------- 69 Full 1.21G DISK 00:01:04 27-NOV-13 BP Key: 69 Status: AVAILABLE Compressed: NO Tag: TAG20131127T110314 Piece Name: /home/oracle/11271103full832590194 List of Datafiles in backup set 69 File LV Type Ckp SCN Ckp Time Name ---- -- ---- ---------- --------- ---- 1 Full 1384847 27-NOV-13 /u01/app/oracle/oradata/dong/system01.dbf 2 Full 1384847 27-NOV-13 /u01/app/oracle/oradata/dong/sysaux01.dbf 3 Full 1384847 27-NOV-13 /u01/app/oracle/oradata/dong/undotbs01.dbf 4 Full 1384847 27-NOV-13 /u01/app/oracle/oradata/dong/users01.dbf 5 Full 1297899 25-NOV-13 /u01/app/oracle/oradata/dong/ff.dbf
SQL> select status from v$instance; STATUS ------------ MOUNTED SQL> declare devtype varchar2(256); done boolean; begin devtype:=sys.dbms_backup_restore.deviceallocate(type=>‘‘,ident=>‘t1‘); sys.dbms_backup_restore.restoresetdatafile; sys.dbms_backup_restore.restoredatafileto(dfnumber=>01,toname=>‘/u01/app/oracle/oradata/dong/system01.dbf‘); sys.dbms_backup_restore.restoredatafileto(dfnumber=>02,toname=>‘/u01/app/oracle/oradata/dong/sysaux01.dbf‘); sys.dbms_backup_restore.restoredatafileto(dfnumber=>03,toname=>‘/u01/app/oracle/oradata/dong/undotbs01.dbf‘); sys.dbms_backup_restore.restoredatafileto(dfnumber=>04,toname=>‘/u01/app/oracle/oradata/dong/users01.dbf‘); sys.dbms_backup_restore.restoredatafileto(dfnumber=>05,toname=>‘/u01/app/oracle/oradata/dong/ff.dbf‘); sys.dbms_backup_restore.restorebackuppiece(done=>done,handle=>‘/home/oracle/11271103full832590194‘,params=>null); sys.dbms_backup_restore.devicedeallocate; end; / PL/SQL procedure successfully completed. [oracle@baobao dong]$ ll 总用量 1704472 -rw-r-----. 1 oracle oinstall 10141696 11月 29 16:20 control01.ct -rw-r-----. 1 oracle oinstall 10141696 11月 29 16:27 control01.ctl -rw-r-----. 1 oracle oinstall 10559488 11月 29 16:26 ff.dbf -rw-r-----. 1 oracle oinstall 492838912 11月 29 16:27 sysaux01.dbf -rw-r-----. 1 oracle oinstall 996155392 11月 29 16:27 system01.dbf -rw-r-----. 1 oracle oinstall 214966272 11月 29 16:26 undotbs01.dbf -rw-r-----. 1 oracle oinstall 10559488 11月 29 16:26 users01.dbf
SQL> alter system set log_archive_dest_1=‘LOCATION=/u01/app/oracle/diag/rdbms/dong‘; System altered. SQL> exit Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production With the Partitioning, OLAP, Data Mining and Real Application Testing options [oracle@baobao 2013_11_27]$ rman target / Recovery Manager: Release 11.2.0.1.0 - Production on Fri Nov 29 16:55:57 2013 Copyright (c) 1982, 2009, Oracle and/or its affiliates. All rights reserved. connected to target database: DONG (DBID=2075447482, not open) RMAN> recover database; Starting recover at 29-NOV-13 using target database control file instead of recovery catalog allocated channel: ORA_DISK_1 channel ORA_DISK_1: SID=99 device type=DISK datafile 5 not processed because file is read-only starting media recovery archived log file name=/u01/app/oracle/diag/rdbms/dong/1_7_832589996.dbf thread=1 sequence=7 media recovery complete, elapsed time: 00:00:01 Finished recover at 29-NOV-13 SQL> alter database open resetlogs; Database altered.
恢复归档文件:
declare devtype varchar2(256); done boolean; begin devtype:=sys.dbms_backup_restore.deviceallocate(type=>‘‘,ident=>‘t1‘); sys.dbms_backup_restore.restoresetarchivedlog(destination=>‘归档目录‘); sys.dbms_backup_restore.restorearchivedlog(thread=>1,seqnce=>1); sys.dbms_backup_restore.restorearchivedlog(thread=>1,seqnce=>2); sys.dbms_backup_restore.restorearchivedlog(thread=>1,seqnce=>3); sys.dbms_backup_restore.restorearchivedlog(thread=>1,seqnce=>4); sys.dbms_backup_restore.restorearchivedlog(thread=>1,seqnce=>5); sys.dbms_backup_restore.restorearchivedlog(thread=>1,seqnce=>6); sys.dbms_backup_restore.restorearchivedlog(thread=>1,seqnce=>7); sys.dbms_backup_restore.restorearchivedlog(thread=>1,seqnce=>8); sys.dbms_backup_restore.restorebackuppiece(done=>done,handle=>‘归档备份集‘,params=>null); sys.dbms_backup_restore.devicedeallocate; end;
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