利用RMAN将数据库从文件系统迁移到ASM
2010-04-04 12:08
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利用RMAN将数据库从文件系统迁移到ASM
转自http://home.dweye.net/viewthread.php?tid=4072| 一、打开ASM实例 [oracle@ASM ~]$ echo $ORACLE_SID +ASM [oracle@ASM ~]$ sqlplus /nolog SQL*Plus: Release 10.2.0.1.0 - Production on Mon Apr 6 01:01:28 2009 Copyright (c) 1982, 2005, Oracle. All rights reserved. SQL> conn / as sysdba Connected to an idle instance. SQL> startup ASM instance started Total System Global Area 79691776 bytes Fixed Size 1217812 bytes Variable Size 53308140 bytes ASM Cache 25165824 bytes ASM diskgroups mounted SQL> select name,state from v$asm_diskgroup; NAME STATE ------------------------------ ----------- DATA MOUNTED DGROUP1 MOUNTED 二、修改目标数据库(TOASM)的SPFILE SQL> ALTER SYSTEM SET CONTROL_FILES='+DGROUP1' SCOPE=SPFILE; System altered. SQL> ALTER SYSTEM SET DB_CREATE_FILE_DEST='+DGROUP1' SCOPE=SPFILE; System altered. 三、关闭目标数据库 SQL> SHUTDOWN IMMEDIATE Database closed. Database dismounted. ORACLE instance shut down. 四、通过RMAN连接到目标数据库，并启动到NOMOUNT状态 [oracle@ASM admin]$ rman target / Recovery Manager: Release 10.2.0.1.0 - Production on Mon Apr 6 01:06:39 2009 Copyright (c) 1982, 2005, Oracle. All rights reserved. connected to target database (not started) RMAN> startup nomount Oracle instance started Total System Global Area 230686720 bytes Fixed Size 1218676 bytes Variable Size 75499404 bytes Database Buffers 150994944 bytes Redo Buffers 2973696 bytes RMAN> 五、还原控制文件到ASM磁盘组,并将数据库启动到MOUNT状态 RMAN> RESTORE CONTROLFILE FROM '/u01/oradata/TOASM/control01.ctl'; Starting restore at 06-APR-09 using target database control file instead of recovery catalog allocated channel: ORA_DISK_1 channel ORA_DISK_1: sid=155 devtype=DISK channel ORA_DISK_1: copied control file copy output filename=+DGROUP1/toasm/controlfile/backup.269.683428107 Finished restore at 06-APR-09 RMAN> ALTER DATABASE MOUNT; database mounted released channel: ORA_DISK_1 RMAN> 六、利用RMAN复制数据文件到ASM磁盘组 RMAN > BACKUP AS COPY DATABASE FORMAT '+DGROUP1'; Starting backup at 06-APR-09 allocated channel: ORA_DISK_1 channel ORA_DISK_1: sid=155 devtype=DISK channel ORA_DISK_1: starting datafile copy input datafile fno=00001 name=/u01/oradata/TOASM/system01.dbf output filename=+DGROUP1/toasm/datafile/system.258.683428337 tag=TAG20090406T011215 recid=2 stamp=683428412 channel ORA_DISK_1: datafile copy complete, elapsed time: 00:01:25 channel ORA_DISK_1: starting datafile copy input datafile fno=00003 name=/u01/oradata/TOASM/sysaux01.dbf output filename=+DGROUP1/toasm/datafile/sysaux.259.683428421 tag=TAG20090406T011215 recid=3 stamp=683428457 channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:45 channel ORA_DISK_1: starting datafile copy input datafile fno=00005 name=/u01/oradata/TOASM/example01.dbf output filename=+DGROUP1/toasm/datafile/example.261.683428467 tag=TAG20090406T011215 recid=4 stamp=683428481 channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:15 channel ORA_DISK_1: starting datafile copy input datafile fno=00002 name=/u01/oradata/TOASM/undotbs01.dbf output filename=+DGROUP1/toasm/datafile/undotbs1.260.683428483 tag=TAG20090406T011215 recid=5 stamp=683428486 channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:07 channel ORA_DISK_1: starting datafile copy input datafile fno=00004 name=/u01/oradata/TOASM/users01.dbf output filename=+DGROUP1/toasm/datafile/users.262.683428489 tag=TAG20090406T011215 recid=6 stamp=683428491 channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:03 channel ORA_DISK_1: starting datafile copy copying current control file output filename=+DGROUP1/toasm/controlfile/backup.278.683428493 tag=TAG20090406T011215 recid=7 stamp=683428495 channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:03 channel ORA_DISK_1: starting full datafile backupset channel ORA_DISK_1: specifying datafile(s) in backupset including current SPFILE in backupset channel ORA_DISK_1: starting piece 1 at 06-APR-09 channel ORA_DISK_1: finished piece 1 at 06-APR-09 piece handle=+DGROUP1/toasm/backupset/2009_04_06/nnsnf0_tag20090406t011215_0.277.683428497 tag=TAG20090406T011215 comment=NONE channel ORA_DISK_1: backup set complete, elapsed time: 00:00:05 Finished backup at 06-APR-09 RMAN> 七、利用RMAN的SWITCH 命令修改控制文件内数据文件的指针，使其指向新位置。 RMAN> SWITCH DATABASE TO COPY; datafile 1 switched to datafile copy "+DGROUP1/toasm/datafile/system.258.683428337" datafile 2 switched to datafile copy "+DGROUP1/toasm/datafile/undotbs1.260.683428483" datafile 3 switched to datafile copy "+DGROUP1/toasm/datafile/sysaux.259.683428421" datafile 4 switched to datafile copy "+DGROUP1/toasm/datafile/users.262.683428489" datafile 5 switched to datafile copy "+DGROUP1/toasm/datafile/example.261.683428467" RMAN> RECOVER DATABASE; Starting recover at 06-APR-09 using channel ORA_DISK_1 starting media recovery media recovery complete, elapsed time: 00:00:00 Finished recover at 06-APR-09 RMAN> 八、打开数据库 RMAN> ALTER DATABASE OPEN; database opened RMAN> 九、迁移临时文件 由于临时文件不会被迁移，所以我们只需要删除原来的增加新的就可以。 SQL> SELECT NAME FROM V$TEMPFILE; NAME -------------------------------------------------- /u01/oradata/TOASM/temp01.dbf SQL> ALTER TABLESPACE TEMP ADD TEMPFILE '+DGROUP1'; Tablespace altered. SQL> ALTER TABLESPACE TEMP DROP TEMPFILE '/u01/oradata/TOASM/temp01.dbf'; Tablespace altered. SQL> SELECT NAME FROM V$TEMPFILE; NAME +DGROUP1/toasm/tempfile/temp.263.683428909 SQL> 十、增加新的ONLINE REDOLOGS 到ASM SQL> SELECT * FROM V$LOG; GROUP# THREAD# SEQUENCE# BYTES MEMBERS ARC STATUS FIRST_CHANGE# FIRST_TIM ---------- ---------- ---------- ---------- ---------- --- ---------------- ------------- --------- 1 1 5 10485760 1 YES INACTIVE 473286 06-APR-09 2 1 6 10485760 1 NO CURRENT 474627 06-APR-09 3 1 4 10485760 1 YES INACTIVE 472097 06-APR-09 SQL> ALTER DATABASE ADD LOGFILE '+DGROUP1' SIZE 10M; Database altered. SQL> ALTER DATABASE ADD LOGFILE '+DGROUP1' SIZE 10M; Database altered. SQL> ALTER DATABASE ADD LOGFILE '+DGROUP1' SIZE 10M; Database altered. SQL> ALTER DATABASE DROP LOGFILE GROUP 1; Database altered. SQL> ALTER SYSTEM SWITCH LOGFILE; System altered. SQL> ALTER SYSTEM SWITCH LOGFILE; System altered. SQL> SQL> ALTER DATABASE DROP LOGFILE GROUP 2; ALTER DATABASE DROP LOGFILE GROUP 2 * ERROR at line 1: ORA-01624: log 2 needed for crash recovery of instance TOASM (thread 1) ORA-00312: online log 2 thread 1: '/u01/oradata/TOASM/redo02.log' SQL> ALTER SYSTEM CHECKPOINT; System altered. SQL> ALTER DATABASE DROP LOGFILE GROUP 2; Database altered. SQL>ALTER DATABASE DROP LOGFILE GROUP 3; Database altered. SQL> SELECT MEMBER FROM V$LOGFILE; MEMBER -------------------------------------------------- +DGROUP1/toasm/onlinelog/group_4.275.683429043 +DGROUP1/toasm/onlinelog/group_5.276.683429047 +DGROUP1/toasm/onlinelog/group_6.264.683429049 SQL> 十一、最后删除原来的数据库文件 [oracle@ASM ~]$ ls -lh /u01/oradata/TOASM/ total 892M -rw-r----- 1 oracle oinstall 6.8M Apr 6 01:05 control01.ctl -rw-r----- 1 oracle oinstall 6.8M Apr 6 01:05 control02.ctl -rw-r----- 1 oracle oinstall 6.8M Apr 6 01:05 control03.ctl -rw-r----- 1 oracle oinstall 101M Apr 6 01:05 example01.dbf -rw-r----- 1 oracle oinstall 11M Apr 6 01:17 redo01.log -rw-r----- 1 oracle oinstall 11M Apr 6 01:24 redo02.log -rw-r----- 1 oracle oinstall 11M Apr 6 01:17 redo03.log -rw-r----- 1 oracle oinstall 231M Apr 6 01:05 sysaux01.dbf -rw-r----- 1 oracle oinstall 481M Apr 6 01:05 system01.dbf -rw-r----- 1 oracle oinstall 26M Apr 6 01:05 undotbs01.dbf -rw-r----- 1 oracle oinstall 5.1M Apr 6 01:05 users01.dbf [oracle@ASM ~]$ rm -rf /u01/oradata/TOASM/* [oracle@ASM ~]$ ls -lh /u01/oradata/TOASM/ total 0 [oracle@ASM ~]$ 迁移完毕！ |
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