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[数据库]迁移ORACLE数据库文件到ASM


迁移数据文件到ASM

数据库一致性情况下迁移:将数据库启动到mount状态,生成rman copy 语句,然后在rman中执行:

SQL> startup mountSQL> select q'(copy datafile ')'||name||q'(' to '+oradata';)' from v$datafile;Q'(COPYDATAFILE')'||NAME||Q'('TO'+ORADATA';)'-------------------------------------------------------------------------------copy datafile 'D:\NSOADP\SYSTEM01.DBF' to '+oradata';copy datafile 'D:\NSOADP\SYSAUX01.DBF' to '+oradata';copy datafile 'F:\NSOADP\UNDOTBS01.DBF' to '+oradata';copy datafile 'D:\NSOADP\USERS01.DBF' to '+oradata';SQL> exitD:\>rman target /RMAN> run2> {3> copy datafile 'D:\NSOADP\SYSTEM01.DBF' to '+oradata';4> copy datafile 'D:\NSOADP\SYSAUX01.DBF' to '+oradata';5> copy datafile 'F:\NSOADP\UNDOTBS01.DBF' to '+oradata';6> copy datafile 'D:\NSOADP\USERS01.DBF' to '+oradata';7>}启动 backup 于 2015-04-15 10:02:44使用通道 ORA_DISK_1通道 ORA_DISK_1: 启动数据文件副本输入数据文件: 文件号=00001 名称=D:\NSOADP\SYSTEM01.DBF输出文件名=+ORADATA/nsoa/datafile/system.260.877082571 标记=TAG20150415T100250 RECID=265 STAMP=877082603通道 ORA_DISK_1: 数据文件复制完毕, 经过时间: 00:00:35完成 backup 于 2015-04-15 10:03:25……

  生成更改控制文件数据名的语句,然后执行更改:

SQL> SELECT --T.NAME,T.FILE#,C.FILE#,C.NAME 2 q'(ALTER DATABASE RENAME FILE ')'||c.name||q'(' to ')'||t.name||q'(';)' 3  FROM V$DATAFILE_COPY T LEFT JOIN V$DATAFILE C 4 ON T.FILE#=C.FILE# 5 WHERE T.NAME IS NOT NULL order by COMPLETION_TIME desc;SQL> alter database rename file 'D:\NSOADP\SYSTEM01.DBF' to '+ORADATA/nsoa/datafile/system.260.877082571';

  数据库非一致性情况下迁移(归档模式):
使用 alter database datafile '' offline 命令将数据文件offline,然后同上面的方式一样处理,最后将数据文件online

SQL> alter database datafile '/u01/oradata/sydb/user01.dbf' offline;RMAN> copy datafile '/u01/oradata/sydb/user01.dbf' to '+oradata';Starting backup at 23-APR-15using target database control file instead of recovery catalogallocated channel: ORA_DISK_1channel ORA_DISK_1: SID=180 device type=DISKchannel ORA_DISK_1: starting datafile copyinput datafile file number=00004 name=/u01/oradata/sydb/user01.dbfoutput file name=+ORADATA/sydb/datafile/users.257.877803115 tag=TAG20150423T181155 RECID=1 STAMP=877803123channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:15Finished backup at 23-APR-15SQL> alter database rename file '/u01/oradata/sydb/user01.dbf' to '+ORADATA/sydb/datafile/users.257.877803115';SQL> alter database datafile '+ORADATA/sydb/datafile/users.257.877803115' online;alter database datafile '+ORADATA/sydb/datafile/users.257.877803115' online*ERROR at line 1:ORA-01113: file 4 needs media recoveryORA-01110: data file 4: '+ORADATA/sydb/datafile/users.257.877803115'SQL> recover datafile '+ORADATA/sydb/datafile/users.257.877803115';Media recovery complete.SQL> alter database datafile '+ORADATA/sydb/datafile/users.257.877803115' online;

 迁移日志文件到ASM 

 可以在mount或open状态迁移非current或active日志文件到asm;方法将已有的日志文件(每个日志组必须有一个member)或日志组(数据库必须有两个日志组存在)删除,然后添加新的日志文件或日志组;

alter database drop logfile member 'E:\NSOADP\REDO07.LOG'; #删除日志文件alter database drop logfile group 2; #删除日志组alter database add logfile member '+oradata' to group 7;  #添加日志文件alter database add logfile ( '+oradata','oradata') size 50m; #添加有两个成员的日志组alter database add logfile '+oradata','oradata' size 50m; #同时添加两个日志组

 迁移控制文件到ASM

 首先确定好控制文件位置和名称 

SQL> show parameter control_fileNAME                 TYPE    VALUE------------------------------------ ----------- ------------------------------control_file_record_keep_time    integer   7control_files            string   F:\NSOADP\CONTROL01.CTL

 修改control_files初始化参数值为asm,然后重启数据库到nomount状态:

SQL> alter system set control_files='+oradata' scope=spfile;SQL> shutdown immediate;SQL> startup nomount

  使用rman复制当前的控制文件到asm

rman target /RMAN> restore controlfile from 'F:\NSOADP\CONTROL01.CTL';启动 restore 于 2015-04-22 09:40:30使用目标数据库控制文件替代恢复目录分配的通道: ORA_DISK_1通道 ORA_DISK_1: SID=70 设备类型=DISK通道 ORA_DISK_1: 已复制控制文件副本输出文件名=+ORADATA/nsoa/controlfile/current.314.877686033完成 restore 于 2015-04-22 09:40:39

  注:如果使用备份的控制文件进行还原,而数据库以前有过RESETLOGS操作或创建控制文件时创建语句指定了RESETLOGS,则必须以RESETLOGS方式打开数据库。 

SQL> alter database mount;SQL> show parameter control_fileNAME                 TYPE          VALUE------------------------------------ ---------------------- ------------------------------control_file_record_keep_time    integer        7control_files            string         +ORADATA/nsoa/controlfile/curr                              ent.314.877686033SQL> alter database open;

 --Then end (2015-04-25)