Oracle Rac 集群文件目录迁移

一、rac 环境修改spfile位置

1. 从集群的任意一个实例登录，查看spfile信息

  
  
  

   
   
   SQL> show parameter spfileNAME TYPE VALUE------------------------------------ ----------- ------------------------------spfile string +DATA/racdb/spfileracdb.ora'
  
  
  

2. 重新创建新的spfile

  
  
  

   
   
   SQL> create pfile = '/home/oracle/pfile.ora' from spfile;File created.SQL> create spfile='+NEW_DATA' from pfile = '/home/oracle/pfile.ora';File created.
  
  
  

3. 通过ASM命令行，查看spfile，并赋予别名。

  
  
  

   
   
   ASMCMD> pwd+new_data/racdb/PARAMETERFILEASMCMD> lsspfileracdb.ora.267.1085996147ASMCMD> mkalias +new_data/racdb/PARAMETERFILE/spfileracdb.ora.267.1085996147 +NEW_DATA/racdb/spfileracdb.ora
  
  
  

4. 修改注册新的spfile文件：

  
  
  

   
   
   $ srvctl modify database -d racdb-p +NEW_DATA/racdb/spfileracdb.ora
  
  
  

5. 重启数据库

  
  
  

   
   
   $ srvctl stop database -d racdb$ srvctl start database -d racdb
  
  
  

6. 查看结果

  
  
  

   
   
   SQL> show parameter spfileNAME TYPE VALUE------------------------------------ ----------- ------------------------------spfile string +NEW_DATA/racdb/spfileracdb.ora
  
  
  

7. 查看参数文件

  
  
  

   
   
   cat initracdb2.oraSPFILE='+NEW_DATA/racdb/spfileracdb.ora' # line added by Agent
  
  
  

二、控制文件路径修改

1、查看控制文件路径：

  
  
  

   
   
   SQL>col NAME for a50SQL> select status, name from v$controlfile;STATUS NAME------- -------------------------------------------------- +DATA/racdb/control01.ctl +DATA/racdb/control02.ctl 或SQL> show parameter control_files;NAME TYPE VALUE------------------------------------ ----------- ------------------------------control_files string +DATA/racdb/control01.ctl, +DATA/racdb/control02.ctl
  
  
  

2、关闭数据库所有实例，启动一个实例到nomount，用rman备份控制文件

  
  
  

   
   
   SQL>startup nomount; -- =>启库为nomount RMAN> restore controlfile to '+NEW_DATA/racdb/control01.ctl' from '+DATA/racdb/control01.ctl';Starting restore at 15-OCT-21using target database control file instead of recovery catalogallocated channel: ORA_DISK_1channel ORA_DISK_1: SID=667 instance=racdb3 device type=DISKchannel ORA_DISK_1: copied control file copyFinished restore at 15-OCT-21RMAN> restore controlfile to '+NEW_DATA/racdb/control02.ctl' from '+DATA/racdb/control02.ctl';Starting restore at 15-OCT-21using channel ORA_DISK_1channel ORA_DISK_1: copied control file copyFinished restore at 15-OCT-21
  
  
  

3、复制控制文件使用：

  
  
  

   
   
   ASMCMD> cp +NEW_DATA/racdb/CONTROLFILE/current.267.1086009349 control01.ctlcopying +NEW_DATA/racdb/CONTROLFILE/current.267.1086009349 -> +new_data/racdb/control01.ctlASMCMD> cp +NEW_DATA/racdb/CONTROLFILE/current.262.1086009391 control02.ctlcopying +NEW_DATA/racdb/CONTROLFILE/current.262.1086009391 -> +new_data/racdb/control02.ctl
  
  
  

4、修改参数

  
  
  

   
   
   SQL> alter system set control_files='+new_data/racdb/control01.ctl', '+new_data/racdb/control02.ctl' scope=spfile sid='*';System altered.
  
  
  

三、数据库表空间迁移

1、表空间迁移：

– 数据库系统表空间

  
  
  

   
   
    RMAN> backup as copy tablespace SYSTEM format '+NEW_DATA'; RMAN> switch tablespace SYSTEM to copy; RMAN> backup as copy tablespace SYSAUX format '+NEW_DATA'; RMAN> switch tablespace SYSAUX to copy; RMAN> backup as copy tablespace USERS format '+NEW_DATA'; RMAN> switch tablespace USERS to copy; 
  
  
  

– 业务用户表空间

  
  
  

   
   
    RMAN> backup as copy tablespace tworain_DAT format '+NEW_DATA'; RMAN> switch tablespace tworain_DAT to copy;
  
  
  

– undo 表空间：

  
  
  

   
   
    RMAN> backup as copy tablespace undotbs001 format '+NEW_DATA'; RMAN> switch tablespace undotbs001 to copy;
  
  
  

2、验证：

  
  
  

   
   
   SQL> select file_name from dba_data_files where tablespace_name ='SYSTEM';FILE_NAME--------------------------------------------------------------------------------+NEW_DATA/racdb/datafile/system.261.1086019835SQL> select file_name from dba_data_files where tablespace_name ='SYSAUX';FILE_NAME--------------------------------------------------------------------------------+NEW_DATA/racdb/datafile/sysaux.260.1086019883SQL> select file_name from dba_data_files where tablespace_name ='USERS';FILE_NAME--------------------------------------------------------------------------------+NEW_DATA/racdb/datafile/users.312.1086020021
  
  
  

3、temp 表空间，修改新路径：

  
  
  

   
   
   SQL> select name from v$tempfile; NAME--------------------------------------------------------------------------------+DATA/racdb/temp01.dbf+DATA/racdb/temp02.dbf
  
  
  

4、 创建新temp 表空间

  
  
  

   
   
   SQL> create temporary tablespace temp03 tempfile '+NEW_DATA' size 30M autoextend on; Tablespace created. SQL> select name from v$tempfile; NAME--------------------------------------------------------------------------------+DATA/test/temp01.dbf+DATA/test/temp02.dbf+NEW_DATA/test/tempfile/temp03.311.1084007975
  
  
  

5、修改默认表空间：

  
  
  

   
   
   SQL> alter database default temporary tablespace temp03;Database altered.
  
  
  

6、 删除旧表空间：

  
  
  

   
   
   SQL> drop tablespace temp including contents and datafiles;
  
  
  

四、redo 文件迁移

1、 创建新redo:

  
  
  

   
   
   ALTER DATABASE ADD LOGFILE THREAD 1 GROUP 1 ('+new_data') SIZE 500M;ALTER DATABASE ADD LOGFILE THREAD 1 GROUP 2 ('+new_data') SIZE 500M;ALTER DATABASE ADD LOGFILE THREAD 2 GROUP 11 ('+new_data') SIZE 500M;ALTER DATABASE ADD LOGFILE THREAD 2 GROUP 12 ('+new_data') SIZE 500M;ALTER DATABASE ADD LOGFILE THREAD 3 GROUP 21 ('+new_data') SIZE 500M;ALTER DATABASE ADD LOGFILE THREAD 3 GROUP 22 ('+new_data') SIZE 500M;ALTER DATABASE ADD LOGFILE THREAD 4 GROUP 31 ('+new_data') SIZE 500M;ALTER DATABASE ADD LOGFILE THREAD 4 GROUP 32 ('+new_data') SIZE 500M;
  
  
  

2、 查看

  
  
  

   
   
   select g.GROUP#, g.STATUS, l.MEMBER from v$log gleft join v$logfile l on g.GROUP#=l.GROUP#where g.STATUS = 'INACTIVE' and l.MEMBER like '+DATA%' order by 2; GROUP# STATUS MEMBER---------- ---------------- ---------------------------------------------------------------------- 16 INACTIVE +DATA/racdb/onlinelog/redo16.log 17 INACTIVE +DATA/racdb/onlinelog/redo17.log 18 INACTIVE +DATA/racdb/onlinelog/redo18.log 19 INACTIVE +DATA/racdb/onlinelog/redo19.log 20 INACTIVE +DATA/racdb/onlinelog/redo20.log 21 INACTIVE +DATA/racdb/onlinelog/redo21.log
  
  
  

3、 删除：

  
  
  

   
   
   alter database drop logfile group 16;alter database drop logfile group 17;alter database drop logfile group 18;alter database drop logfile group 19;alter database drop logfile group 20;
  
  
  

五、数据文件迁移

  
  
  

   
   
   SQL> select FILE_ID,FILE_NAME FROM DBA_DATA_FILES WHERE TABLESPACE_NAME ='racdb_DAT';FILE_ID FILE_NAME---------- ---------------------------------------------------------------------------------------------------- 6 +NEW_DATA/racdb/datafile/racdb_dat.265.1083955823 10 +NEW_DATA/racdb/datafile/racdb_dat.262.1083956499 11 +NEW_DATA/racdb/datafile/racdb_dat.261.1083956723 21 +NEW_DATA/racdb/datafile/racdb_dat.267.1083955373 22 +NEW_DATA/racdb/datafile/racdb_dat.301.1083964647 23 +NEW_DATA/racdb/datafile/racdb_dat.268.1083958067 24 +NEW_DATA/racdb/datafile/racdb_dat.269.1083958291
  
  
  

– rman 复制数据文件 ：

  
  
  

   
   
    copy datafile 10 to '+DATA'; copy datafile 11 to '+DATA'; copy datafile 21 to '+DATA';
  
  
  

– 修改控制文件，数据文件路径：

  
  
  

   
   
    alter database rename file '+NEW_DATA/racdb/datafile/racdb_dat.265.1083955823' to '+DATA/racdb/datafile/racdb_dat.334.1085682389'; alter database rename file '+NEW_DATA/racdb/datafile/racdb_dat.262.1083956499' to '+DATA/racdb/datafile/racdb_dat.333.1085682705'; alter database rename file '+NEW_DATA/racdb/datafile/racdb_dat.261.1083956723' to '+DATA/racdb/datafile/racdb_dat.332.1085682719'; alter database rename file '+NEW_DATA/racdb/datafile/racdb_dat.267.1083955373' to '+DATA/racdb/datafile/racdb_dat.296.1085682739';
  
  
  

                         文档下载

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