asm下表空間的重命名與普通文件系統下的表空間重命名原理是一樣的，只不過asm管理的數據文件有一些需要注意的地方，另外在asm下操作數據文件需要格外小心，稍有不慎將會造成數據文件丟失，如可以做備份最好需要備份。

需求：公司rac數據庫asm存儲原本采用normal模式，現在給數據庫做了備份策略，不想在使用normal模式的asm管理，這樣日常管理太浪費時間，為了平滑遷移，我新添加了一個磁盤組oradata，把日后增加的數據文件首先添加到oradata磁盤組下，然后沒有業務發生時再去遷移原始數據。

實施步驟：

1、原始文件存儲data磁盤組：

ASMCMD [+data/orcl/datafile] > ls -l

Type????? Redund? Striped? Time???????????? Sys? Name

DATAFILE? MIRROR? COARSE?? JUN 27 14:00:00? Y??? EFMIS.268.907265611

DATAFILE? MIRROR? COARSE?? JUN 27 14:00:00? Y??? EFMIS.269.911467049

DATAFILE? MIRROR? COARSE?? JUN 27 14:00:00? Y??? EFMIS.270.911467085

DATAFILE? MIRROR? COARSE?? JUN 27 14:00:00? Y??? EFMIS.271.913894971

DATAFILE? MIRROR? COARSE?? JUN 27 14:00:00? Y??? EFMIS.272.915559085

DATAFILE? MIRROR? COARSE?? JUN 27 14:00:00? Y??? EFMIS.273.915613859

DATAFILE? MIRROR? COARSE?? JUN 27 14:00:00? Y??? SYSAUX.257.907264709

DATAFILE? MIRROR? COARSE?? JUN 27 14:00:00? Y??? SYSTEM.256.907264709

DATAFILE? MIRROR? COARSE?? JUN 27 14:00:00? Y??? UNDOTBS1.258.907264709

DATAFILE? MIRROR? COARSE?? JUN 27 14:00:00? Y??? UNDOTBS2.264.907264867

DATAFILE? MIRROR? COARSE?? JUN 27 14:00:00? Y??? USERS.259.907264709

??????????????????????????????????????????? N??? efmis01.dbf => +DATA/ORCL/DATAFILE/EFMIS.268.907265611

??????????????????????????????????????????? N??? efmis02.dbf => +DATA/ORCL/DATAFILE/EFMIS.269.911467049

??????????????????????????????????????????? N??? efmis03.dbf => +DATA/ORCL/DATAFILE/EFMIS.270.911467085

??????????????????????????????????????????? N??? efmis04.dbf => +DATA/ORCL/DATAFILE/EFMIS.271.913894971

??????????????????????????????????????????? N??? efmis05.dbf => +DATA/ORCL/DATAFILE/EFMIS.272.915559085

??????????????????????????????????????????? N??? efmis06.dbf => +DATA/ORCL/DATAFILE/EFMIS.273.915613859

2、目標文件存儲oradata磁盤組：

ASMCMD [+oradata/orcl/datafile] > ls -l

Type????? Redund? Striped? Time???????????? Sys? Name

DATAFILE? UNPROT? COARSE?? JUN 27 22:00:00? Y??? EFMIS.256.915634603

DATAFILE? UNPROT? COARSE?? JUN 27 22:00:00? Y??? EFMIS.257.915634643

DATAFILE? UNPROT? COARSE?? JUN 27 22:00:00? Y??? EFMIS.258.915634663

DATAFILE? UNPROT? COARSE?? JUN 27 22:00:00? Y??? EFMIS.259.915634679

???????????????????????????????????????? N efmis07.dbf => +ORADATA/ORCL/DATAFILE/EFMIS.256.915634603

???????????????????????????????????????? N efmis08.dbf => +ORADATA/ORCL/DATAFILE/EFMIS.257.915634643

???????????????????????????????????????? N? efmis09.dbf => +ORADATA/ORCL/DATAFILE/EFMIS.258.915634663

???????????????????????????????????????? N efmis10.dbf => +ORADATA/ORCL/DATAFILE/EFMIS.259.915634679

3、這里需要將data磁盤組下的efmis數據表空間下的文件都遷移到oradata下：

1）首先關閉數據庫：

[grid@node2 ~]$ serctl stop database -d orcl

2）啟動數據庫一個節點實例到mount狀態（也可以open下遷移數據，這里因為數據庫暫時不會發生業務，所以直接在mount下遷移）并查詢數據庫數據文件組成：

[oracle@node1 ~]$ sqlplus / as sysdba

SQL*Plus: Release 11.2.0.4.0 Production on Mon Jun 27 22:28:42 2016

Copyright (c) 1982, 2013, Oracle.? All rights reserved.

Connected to an idle instance.

SQL> startup mount

ORACLE instance started.

Total System Global Area 4275781632 bytes

Fixed Size???? 2260088 bytes

Variable Size? 1073742728 bytes

Database Buffers? 3187671040 bytes

Redo Buffers??? 12107776 bytes

Database mounted.

SQL> select name from v$datafile;

NAME

--------------------------------------------------------------------------------

+DATA/orcl/datafile/system.256.907264709

+DATA/orcl/datafile/sysaux.257.907264709

+DATA/orcl/datafile/undotbs1.258.907264709

+DATA/orcl/datafile/users.259.907264709

+DATA/orcl/datafile/undotbs2.264.907264867

+DATA/orcl/datafile/efmis01.dbf

+DATA/orcl/datafile/efmis02.dbf

+DATA/orcl/datafile/efmis03.dbf

+DATA/orcl/datafile/efmis04.dbf

+DATA/orcl/datafile/efmis05.dbf

+DATA/orcl/datafile/efmis06.dbf

+ORADATA/orcl/datafile/efmis07.dbf

+ORADATA/orcl/datafile/efmis08.dbf

+ORADATA/orcl/datafile/efmis09.dbf

+ORADATA/orcl/datafile/efmis10.dbf

15 rows selected.

3）asm上遷移物理文件：

ASMCMD [+data/orcl/datafile] > cp +DATA/ORCL/DATAFILE/EFMIS.273.915613859 +ORADATA/ORCL/DATAFILE/efmis06.dbf

copying +DATA/ORCL/DATAFILE/EFMIS.273.915613859 -> +ORADATA/ORCL/DATAFILE/efmis06.dbf

ASMCMD [+data/orcl/datafile] > cp +DATA/ORCL/DATAFILE/EFMIS.272.915559085 +ORADATA/ORCL/DATAFILE/efmis05.dbf

copying +DATA/ORCL/DATAFILE/EFMIS.272.915559085 -> +ORADATA/ORCL/DATAFILE/efmis05.dbf

ASMCMD [+data/orcl/datafile] > cp +DATA/ORCL/DATAFILE/EFMIS.271.913894971 +ORADATA/ORCL/DATAFILE/efmis04.dbf

copying +DATA/ORCL/DATAFILE/EFMIS.271.913894971 -> +ORADATA/ORCL/DATAFILE/efmis04.dbf

ASMCMD [+data/orcl/datafile] > cp +DATA/orcl/datafile/EFMIS.270.911467085 +ORADATA/orcl/datafile/efmis03.dbf

copying +DATA/orcl/datafile/EFMIS.270.911467085 -> +ORADATA/orcl/datafile/efmis03.dbf

ASMCMD [+data/orcl/datafile] > cp +DATA/ORCL/DATAFILE/EFMIS.269.911467049 +ORADATA/ORCL/DATAFILE/efmis02.dbf

copying +DATA/ORCL/DATAFILE/EFMIS.269.911467049 -> +ORADATA/ORCL/DATAFILE/efmis02.dbf

ASMCMD [+data/orcl/datafile] > cp +DATA/ORCL/DATAFILE/EFMIS.268.907265611 +ORADATA/orcl/datafile/efmis01.dbf

copying +DATA/ORCL/DATAFILE/EFMIS.268.907265611 -> +ORADATA/orcl/datafile/efmis01.dbf

ASMCMD [+data/orcl/datafile] > cp USERS.259.907264709 +ORADATA/orcl/datafile/USERS

copying +data/orcl/datafile/USERS.259.907264709 -> +ORADATA/orcl/datafile/USERS

ASMCMD [+oradata/orcl/datafile] > ls -l

Type????? Redund? Striped? Time???????????? Sys? Name

DATAFILE? UNPROT? COARSE?? JUN 27 23:00:00? Y??? EFMIS.256.915634603

DATAFILE? UNPROT? COARSE?? JUN 27 23:00:00? Y??? EFMIS.257.915634643

DATAFILE? UNPROT? COARSE?? JUN 27 23:00:00? Y??? EFMIS.258.915634663

DATAFILE? UNPROT? COARSE?? JUN 27 23:00:00? Y??? EFMIS.259.915634679

?????????????????????????????????? N??? USERS => +ORADATA/ASM/DATAFILE/USERS.266.915663721

?????????????????????????????????? N efmis01.dbf => +ORADATA/ASM/DATAFILE/efmis01.dbf.265.915663163

?????????????????????????????????? N efmis02.dbf => +ORADATA/ASM/DATAFILE/efmis02.dbf.264.915662267

?????????????????????????????????? N efmis03.dbf => +ORADATA/ASM/DATAFILE/efmis03.dbf.263.915662067

?????????????????????????????????? N efmis04.dbf => +ORADATA/ASM/DATAFILE/efmis04.dbf.262.915662031

?????????????????????????????????? N efmis05.dbf => +ORADATA/ASM/DATAFILE/efmis05.dbf.261.915661983

?????????????????????????????????? N efmis06.dbf => +ORADATA/ASM/DATAFILE/efmis06.dbf.260.915661893

?????????????????????????????????? N??? efmis07.dbf => +ORADATA/ORCL/DATAFILE/EFMIS.256.915634603

?????????????????????????????????? N??? efmis08.dbf => +ORADATA/ORCL/DATAFILE/EFMIS.257.915634643

?????????????????????????????????? N??? efmis09.dbf => +ORADATA/ORCL/DATAFILE/EFMIS.258.915634663

?????????????????????????????????? N??? efmis10.dbf => +ORADATA/ORCL/DATAFILE/EFMIS.259.915634679

4）數據庫下重命名數據文件：

SQL> alter database rename file '+DATA/orcl/datafile/efmis01.dbf' to '+ORADATA/orcl/datafile/efmis01.dbf';

Database altered.

SQL> alter database rename file '+DATA/orcl/datafile/efmis02.dbf' to '+ORADATA/orcl/datafile/efmis02.dbf';

Database altered.

SQL> alter database rename file '+DATA/orcl/datafile/efmis03.dbf' to '+ORADATA/orcl/datafile/efmis03.dbf';

Database altered.

SQL> alter database rename file '+DATA/orcl/datafile/efmis04.dbf' to '+ORADATA/orcl/datafile/efmis04.dbf';

Database altered.

SQL> alter database rename file '+DATA/orcl/datafile/efmis05.dbf' to '+ORADATA/orcl/datafile/efmis05.dbf';

Database altered.

SQL> alter database rename file '+DATA/orcl/datafile/efmis06.dbf' to '+ORADATA/orcl/datafile/efmis06.dbf';

Database altered.

SQL> alter database rename file '+DATA/orcl/datafile/users.259.907264709' to '+ORADATA/orcl/datafile/USERS';

Database altered.

5）查看遷移后數據文件分布情況：

SQL> SELECT NAME FROM V$DATAFILE;

NAME

--------------------------------------------------------------------------------

+DATA/orcl/datafile/system.256.907264709

+DATA/orcl/datafile/sysaux.257.907264709

+DATA/orcl/datafile/undotbs1.258.907264709

+ORADATA/orcl/datafile/users

+DATA/orcl/datafile/undotbs2.264.907264867

+ORADATA/orcl/datafile/efmis01.dbf

+ORADATA/orcl/datafile/efmis02.dbf

+ORADATA/orcl/datafile/efmis03.dbf

+ORADATA/orcl/datafile/efmis04.dbf

+ORADATA/orcl/datafile/efmis05.dbf

+ORADATA/orcl/datafile/efmis06.dbf

+ORADATA/orcl/datafile/efmis07.dbf

+ORADATA/orcl/datafile/efmis08.dbf

+ORADATA/orcl/datafile/efmis09.dbf

+ORADATA/orcl/datafile/efmis10.dbf

15 rows selected.

6）打開數據庫：這里可以成功打開數據庫，證明數據文件遷移是沒有問題的。

SQL> alter database open;

Database altered.

7）設置grid管理數據庫

SQL> shutdown immediate

Database closed.

Database dismounted.

ORACLE instance shut down.

SQL> exit

[grid@node2 ~]$ srvctl start database -d orcl

8）查看目前集群軟件及數據庫運行狀態：

[grid@node2 ~]$ crsctl status resource -t

ora.asm

ONLINE? ONLINE?????? node1??????????????????? Started?????????????

ONLINE? ONLINE?????? node2??????????????????? Started????

ora.orcl.db

1??????? ONLINE? ONLINE?????? node1??????????????????? Open????????????????

2??????? ONLINE? ONLINE?????? node2??????????????????? Open????????????????

ASMCMD [+oradata/orcl/datafile] > lsdg

State???? Type?????? Total_MB? Free_MB? Req_mir_free_MB? Usable_file_MB??? Voting_files? Name

MOUNTED? NORMAL??? 409592?? 358082?????????? 102398????????? 127842?????????? N? DATA/

MOUNTED? NORMAL??? 204796?? 204126??????????????? 0????????? 102063?????????? N? FLASH/

MOUNTED? EXTERN???? 6134???? 5736????????????????? 0????????? 5736???????????? Y? GRIDDG/

MOUNTED? EXTERN???? 409594?? 255077??????????????? 0????????? 255077?????????? N? ORADATA/

SQL> select name,round(total_mb/1024,2),round(free_mb/1024,2) from v$asm_diskgroup;

NAME????? ROUND(TOTAL_MB/1024,2) ROUND(FREE_MB/1024,2)

-------------------- ---------------------- ------------------------------------------------------------------------------

DATA???? 399.99 349.69

FLASH 200 199.34

GRIDDG???? 5.99 5.6

ORADATA???? 399.99 249.1

轉載于:https://www.cnblogs.com/wcwen1990/p/6656541.html

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