【DB笔试面试738】在Oracle中,将RAC备份集恢复到单实例数据库的步骤有哪些?...
2021/4/17 2:27:35
本文主要是介绍【DB笔试面试738】在Oracle中,将RAC备份集恢复到单实例数据库的步骤有哪些?...,对大家解决编程问题具有一定的参考价值,需要的程序猿们随着小编来一起学习吧!
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题目部分
在Oracle中,将RAC备份集恢复到单实例数据库的步骤有哪些?
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答案部分
将RAC备份集恢复到单实例数据库的过程基本上就是先将备份集恢复为RAC数据库,然后再将数据库转换为单实例的数据库。
数据库的备份可以使用如下的脚本:
1run 2{ 3 allocate channel c1 type disk; 4 allocate channel c2 type disk; 5 backup database format '/home/oracle/rman_back/full_%n_%T_%t_%s_%p.bak'; 6 sql 'alter system archive log current'; 7 backup archivelog all format '/home/oracle/rman_back/arch_%d_%T_%s_%p.bak' delete input; 8 backup current controlfile format '/home/oracle/rman_back/ctl_%d_%T_%s_%p.bak'; 9 release channel c1; 10 release channel c2; 11} 12
将RAC备份集恢复到单实例数据库可以分为恢复为ASM存储的单实例和FS存储的单实例,其处理过程分别不同。
1、rac恢复到ASM中
1ORACLE_SID=lhrdbasm 2startup nomount; 3set dbid 2136828548 4restore spfile to '/tmp/aabb.ora' from '/home/oracle/rman_back/full_LHRRAC1x_20180711_981219654_4_1.bak'; 5 6strings /tmp/aabb.ora 7 8*.audit_file_dest='/u01/app/oracle/admin/lhrdbasm/adump' 9*.audit_trail='db' 10*.compatible='11.2.0.0.0' 11*.control_files='+FRA','+FRA' 12*.db_block_size=8192 13*.db_create_file_dest='+FRA' 14*.db_domain='' 15*.db_name='lhrrac1' 16*.db_recovery_file_dest='+FRA' 17*.db_recovery_file_dest_size=20558159872 18*.diagnostic_dest='/u01/app/oracle' 19*.dispatchers='(PROTOCOL=TCP) (SERVICE=lhrdbasmXDB)' 20*.memory_target=630194176 21*.open_cursors=300 22*.processes=150 23*.remote_login_passwordfile='exclusive' 24 25 26mkdir -p /u01/app/oracle/admin/lhrdbasm/adump 27create spfile from pfile='/tmp/b.txt'; 28startup nomount force; 29restore controlfile from '/home/oracle/rman_back/ctl_LHRRAC1_20180711_7_1.bak'; 30alter database mount; 31 32set line 9999 pagesize 9999 33col FILE_NAME format a60 34select 'datafile' file_type, file#,name FILE_NAME,status,enabled from v$datafile 35union all 36select 'tempfile',file#,name FILE_NAME,status,enabled from v$tempfile 37union all 38select 'logfile',group# file#,member FILE_NAME,status,'' from v$logfile 39union all 40select 'controlfile', to_number('') ,name FILE_NAME,status,'' from v$controlfile; 41 42 43set pagesize 200 linesize 200 44select 'set newname for datafile ' || a.FILE# || ' to "' || a.NAME || '";' from v$datafile a 45union all 46select 'set newname for tempfile ' || a.FILE# || ' to "' || a.NAME || '";' from v$tempfile a 47union all 48SELECT 'SQL "ALTER DATABASE RENAME FILE ''''' || a.MEMBER || ''''' to ''''' || a.MEMBER || ''''' ";' FROM v$logfile a; 49 50 51set pagesize 200 linesize 200 52select 'set newname for datafile ' || a.FILE# || ' to "+FRA";' from v$datafile a 53union all 54select 'set newname for tempfile ' || a.FILE# || ' to "+FRA";' from v$tempfile a 55union all 56SELECT 'SQL "ALTER DATABASE RENAME FILE ''''' || a.MEMBER || ''''' to ''''+FRA'''' ";' FROM v$logfile a; 57 58 59run { 60 ALLOCATE CHANNEL c1 DEVICE TYPE DISK; 61 set newname for datafile 1 to "+FRA"; 62 set newname for datafile 2 to "+FRA"; 63 set newname for datafile 3 to "+FRA"; 64 set newname for datafile 4 to "+FRA"; 65 set newname for datafile 5 to "+FRA"; 66 set newname for datafile 6 to "+FRA"; 67 set newname for tempfile 1 to "+FRA"; 68 SQL "ALTER DATABASE RENAME FILE ''+DATA/lhrrac1/onlinelog/group_2.264.976375887'' to ''+FRA'' "; 69 SQL "ALTER DATABASE RENAME FILE ''+DATA/lhrrac1/onlinelog/group_2.265.976375889'' to ''+FRA'' "; 70 SQL "ALTER DATABASE RENAME FILE ''+DATA/lhrrac1/onlinelog/group_1.262.976375881'' to ''+FRA'' "; 71 SQL "ALTER DATABASE RENAME FILE ''+DATA/lhrrac1/onlinelog/group_1.263.976375883'' to ''+FRA'' "; 72 SQL "ALTER DATABASE RENAME FILE ''+DATA/lhrrac1/onlinelog/group_3.269.976376503'' to ''+FRA'' "; 73 SQL "ALTER DATABASE RENAME FILE ''+DATA/lhrrac1/onlinelog/group_3.270.976376505'' to ''+FRA'' "; 74 SQL "ALTER DATABASE RENAME FILE ''+DATA/lhrrac1/onlinelog/group_4.271.976376507'' to ''+FRA'' "; 75 SQL "ALTER DATABASE RENAME FILE ''+DATA/lhrrac1/onlinelog/group_4.272.976376509'' to ''+FRA'' "; 76 restore database; 77 SWITCH DATAFILE ALL; 78 SWITCH TEMPFILE ALL; 79 release channel c1; 80 } 81 82 83list backupset of archivelog all; 84RUN 85{ 86set until sequence 10 thread 1; 87set until sequence 7 thread 2; 88recover database; 89} 90 91alter database open resetlogs; 92 93 94col instance format a20 95select thread#,instance,status,enabled from v$thread; 96alter database disable thread 2 ; 97alter database drop logfile group 3 ; 98alter database drop logfile group 4 ; 99 100 101drop tablespace undotbs2 including contents and datafiles; 102
2、RAC恢复到FS中
1ORACLE_SID=lhrfs 2startup nomount; 3set dbid 2136828548 4restore spfile to '/tmp/aabbcc.ora' from '/home/oracle/rman_back/full_LHRRAC1x_20180711_981219654_4_1.bak'; 5 6*.audit_file_dest='/u01/app/oracle/admin/lhrfs/adump' 7*.audit_trail='db' 8*.compatible='11.2.0.0.0' 9*.control_files='/u01/app/oracle/oradata/lhrfs/control01.dbf','/u01/app/oracle/oradata/lhrfs/control02.dbf' 10*.db_block_size=8192 11*.db_create_file_dest='/u01/app/oracle/oradata/lhrfs' 12*.db_domain='' 13*.db_name='lhrrac1' 14*.db_recovery_file_dest='/u01/app/oracle/flash_recovery_area' 15*.db_recovery_file_dest_size=4558159872 16*.diagnostic_dest='/u01/app/oracle' 17*.dispatchers='(PROTOCOL=TCP) (SERVICE=lhrfsXDB)' 18*.memory_target=630194176 19*.open_cursors=300 20*.processes=150 21*.remote_login_passwordfile='exclusive' 22 23 24 25create spfile from pfile='/tmp/b.txt'; 26startup nomount force; 27restore controlfile from '/home/oracle/rman_back/ctl_LHRRAC1_20180711_7_1.bak'; 28alter database mount; 29 30set line 9999 pagesize 9999 31col FILE_NAME format a60 32select 'datafile' file_type, file#,name FILE_NAME,status,enabled from v$datafile 33union all 34select 'tempfile',file#,name FILE_NAME,status,enabled from v$tempfile 35union all 36select 'logfile',group# file#,member FILE_NAME,status,'' from v$logfile 37union all 38select 'controlfile', to_number('') ,name FILE_NAME,status,'' from v$controlfile; 39 40 41set pagesize 200 linesize 200 42select 'set newname for datafile ' || a.FILE# || ' to "' || a.NAME || '";' from v$datafile a 43union all 44select 'set newname for tempfile ' || a.FILE# || ' to "' || a.NAME || '";' from v$tempfile a 45union all 46SELECT 'SQL "ALTER DATABASE RENAME FILE ''''' || a.MEMBER || ''''' to ''''' || a.MEMBER || ''''' ";' FROM v$logfile a; 47 48 49set newname for datafile 1 to "/u01/app/oracle/oradata/lhrfs/system01.dbf"; 50set newname for datafile 2 to "/u01/app/oracle/oradata/lhrfs/sysaux01.dbf"; 51set newname for datafile 3 to "/u01/app/oracle/oradata/lhrfs/undotbs101.dbf"; 52set newname for datafile 4 to "/u01/app/oracle/oradata/lhrfs/users01.dbf"; 53set newname for datafile 5 to "/u01/app/oracle/oradata/lhrfs/example01.dbf"; 54set newname for datafile 6 to "/u01/app/oracle/oradata/lhrfs/undotbs201.dbf"; 55set newname for tempfile 1 to "/u01/app/oracle/oradata/lhrfs/temp01.dbf"; 56SQL "ALTER DATABASE RENAME FILE ''+DATA/lhrrac1/onlinelog/group_2.264.976375887'' to ''/u01/app/oracle/oradata/lhrfs/G2_redo01.log'' "; 57SQL "ALTER DATABASE RENAME FILE ''+DATA/lhrrac1/onlinelog/group_2.265.976375889'' to ''/u01/app/oracle/oradata/lhrfs/G2_redo02.log'' "; 58SQL "ALTER DATABASE RENAME FILE ''+DATA/lhrrac1/onlinelog/group_1.262.976375881'' to ''/u01/app/oracle/oradata/lhrfs/G1_redo01.log'' "; 59SQL "ALTER DATABASE RENAME FILE ''+DATA/lhrrac1/onlinelog/group_1.263.976375883'' to ''/u01/app/oracle/oradata/lhrfs/G1_redo02.log'' "; 60SQL "ALTER DATABASE RENAME FILE ''+DATA/lhrrac1/onlinelog/group_3.269.976376503'' to ''/u01/app/oracle/oradata/lhrfs/G3_redo01.log'' "; 61SQL "ALTER DATABASE RENAME FILE ''+DATA/lhrrac1/onlinelog/group_3.270.976376505'' to ''/u01/app/oracle/oradata/lhrfs/G3_redo02.log'' "; 62SQL "ALTER DATABASE RENAME FILE ''+DATA/lhrrac1/onlinelog/group_4.271.976376507'' to ''/u01/app/oracle/oradata/lhrfs/G4_redo01.log'' "; 63SQL "ALTER DATABASE RENAME FILE ''+DATA/lhrrac1/onlinelog/group_4.272.976376509'' to ''/u01/app/oracle/oradata/lhrfs/G4_redo02.log'' "; 64 65 66 67run { 68 ALLOCATE CHANNEL c1 DEVICE TYPE DISK; 69set newname for datafile 1 to "/u01/app/oracle/oradata/lhrfs/system01.dbf"; 70set newname for datafile 2 to "/u01/app/oracle/oradata/lhrfs/sysaux01.dbf"; 71set newname for datafile 3 to "/u01/app/oracle/oradata/lhrfs/undotbs101.dbf"; 72set newname for datafile 4 to "/u01/app/oracle/oradata/lhrfs/users01.dbf"; 73set newname for datafile 5 to "/u01/app/oracle/oradata/lhrfs/example01.dbf"; 74set newname for datafile 6 to "/u01/app/oracle/oradata/lhrfs/undotbs201.dbf"; 75set newname for tempfile 1 to "/u01/app/oracle/oradata/lhrfs/temp01.dbf"; 76SQL "ALTER DATABASE RENAME FILE ''+DATA/lhrrac1/onlinelog/group_2.264.976375887'' to ''/u01/app/oracle/oradata/lhrfs/G2_redo01.log'' "; 77SQL "ALTER DATABASE RENAME FILE ''+DATA/lhrrac1/onlinelog/group_2.265.976375889'' to ''/u01/app/oracle/oradata/lhrfs/G2_redo02.log'' "; 78SQL "ALTER DATABASE RENAME FILE ''+DATA/lhrrac1/onlinelog/group_1.262.976375881'' to ''/u01/app/oracle/oradata/lhrfs/G1_redo01.log'' "; 79SQL "ALTER DATABASE RENAME FILE ''+DATA/lhrrac1/onlinelog/group_1.263.976375883'' to ''/u01/app/oracle/oradata/lhrfs/G1_redo02.log'' "; 80SQL "ALTER DATABASE RENAME FILE ''+DATA/lhrrac1/onlinelog/group_3.269.976376503'' to ''/u01/app/oracle/oradata/lhrfs/G3_redo01.log'' "; 81SQL "ALTER DATABASE RENAME FILE ''+DATA/lhrrac1/onlinelog/group_3.270.976376505'' to ''/u01/app/oracle/oradata/lhrfs/G3_redo02.log'' "; 82SQL "ALTER DATABASE RENAME FILE ''+DATA/lhrrac1/onlinelog/group_4.271.976376507'' to ''/u01/app/oracle/oradata/lhrfs/G4_redo01.log'' "; 83SQL "ALTER DATABASE RENAME FILE ''+DATA/lhrrac1/onlinelog/group_4.272.976376509'' to ''/u01/app/oracle/oradata/lhrfs/G4_redo02.log'' "; 84 restore database; 85 SWITCH DATAFILE ALL; 86 SWITCH TEMPFILE ALL; 87 release channel c1; 88 } 89 90 91list backupset of archivelog all; 92RUN 93{ 94set until sequence 10 thread 1; 95set until sequence 7 thread 2; 96recover database; 97} 98 99alter database open resetlogs; 100 101 102col instance format a20 103select thread#,instance,status,enabled from v$thread; 104alter database disable thread 2 ; 105alter database drop logfile group 3 ; 106alter database drop logfile group 4 ; 107 108 109drop tablespace undotbs2 including contents and datafiles; 110
& 说明:
有关RAC备份集恢复到单实例数据库的更多内容可以参考我的BLOG:http://blog.itpub.net/26736162/viewspace-1682255/。
本文选自《Oracle程序员面试笔试宝典》,作者:小麦苗
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