11G Oracle RAC添加新表空间时数据文件误放置到本地文件系统的修正

  今天看了一篇文章说是误将新创建的表空间的数据文件放置在了本地系统而不是共享存储上。

是Oracle的中文技术支持博客题目是：RAC中误将数据文件创建在本地盘时的修正

  于是我想11G 也兼容这些操作的方法，但是11G的新特性有一点就是可以直接支持ASM文件系统直接可以和本地文件系统进行文件的拷贝了，也就是有三种方法。

1. RMAN的 copy datafile 方式

2. dbms_file_transfer方式

3. ASMCMD中的直接cp方式了

分别演示三种方式：

RMAN

1)创建好本地开始的表空间

SQL> create tablespace andy datafile '/home/oracle/andy.dbf' size 100M;

Tablespace created.

2）查看一下状态

SQL> select name,status from v$datafile;

NAME

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

STATUS

-------

+DATA/racdb/datafile/system.256.823634487

SYSTEM

+DATA/racdb/datafile/sysaux.257.823634489

ONLINE

+DATA/racdb/datafile/undotbs1.258.823634489

ONLINE

NAME

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

STATUS

-------

+DATA/racdb/datafile/users.259.823634491

ONLINE

+DATA/racdb/datafile/example.264.823634653

ONLINE

+DATA/racdb/datafile/undotbs2.265.823634943

ONLINE

NAME

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

STATUS

-------

+DATA/racdb/datafile/undotbs3.266.823634945

ONLINE

+DATA/racdb/datafile/andylhz.272.823709117

ONLINE

+DATA/racdb/datafile/archivedata.274.824748169

ONLINE

NAME

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

STATUS

-------

+DATA/racdb/datafile/archivedata01.275.824749235

ONLINE

/home/oracle/andy.dbf

ONLINE

3）在本地表空间上创建表 andy01

SQL> create table andy01 tablespace andy as select * from dba_objects;

Table created.

4）在第二个实例上去创建表也放在andy这个表空间上，注意红色字体部分，报告无法定位andy.dbf数据文件

[oracle@racdb2 ~]$ sqlplus  /nolog

SQL*Plus: Release 11.2.0.1.0 Production on Wed Feb 12 17:00:30 2014

Copyright (c) 1982, 2009, Oracle.  All rights reserved.

SQL> conn / as sysdba

Connected.

SQL> create table andy02 tablespace andy as select * from dba_objects;

create table andy02 tablespace andy as select * from dba_objects

                                                    *

ERROR at line 1:

ORA-01157: cannot identify/lock data file 11 - see DBWR trace file

ORA-01110: data file 11: '/home/oracle/andy.dbf'

5）然后进行修正操作，先将andy表空间进行offline

然后进行RMAN 拷贝 在将数据文件进行移动，online即可

wKioL1L7ObbzZwMlAAI7uS-UAhQ842.jpg

SQL> alter database rename file '/home/oracle/andy.dbf' to '+data/racdb/datafile/andy.dbf';

第二种方式

1）先创建两个目录，offline表空间andy

SQL> create directory andy01 as  '/home/oracle/';

Directory created.

SQL> create directory andy02 as  '+data/racdb/datafile/';

Directory created.

SQL>

2）进行文件传输

SQL> exec dbms_file_transfer.copy_file('andy01','andy.dbf','andy02','andy.dbf');

PL/SQL procedure successfully completed.

SQL>

进入asmcmd查看一下

ASMCMD> pwd

+data/racdb/datafile

ASMCMD> ls

ANDYLHZ.272.823709117

ARCHIVEDATA.274.824748169

ARCHIVEDATA01.275.824749235

COPY_FILE.279.839351419

EXAMPLE.264.823634653

SYSAUX.257.823634489

SYSTEM.256.823634487

UNDOTBS1.258.823634489

UNDOTBS2.265.823634943

UNDOTBS3.266.823634945

USERS.259.823634491

andy.dbf

ASMCMD>

已经成功拷贝过去了

移动数据文件，online数据文件

SQL> alter database rename file '/home/oracle/andy.dbf' to '+data/racdb/datafile/andy.dbf';

Database altered.

SQL>  alter tablespace andy online;

Tablespace altered.

第三种：通过grid用户进入到asmcmd环境下然后直接进入到RAC环境下的数据文件所在路径因为是数据文件创建在了oracle的家目录下，grid没有权限读取，所以使用root用户将数据文件移动到grid家目录下同时变更权

[root@racdb1 grid]#mv andy.dbf /home/grid/

[root@racdb1 grid]#chown grid.asmadmin andy.dbf

[root@racdb1 grid]# su - grid

[grid@racdb1 ~]$ asmcmd

ASMCMD> cd data/racdb/datafile/

ASMCMD> ls

ANDYLHZ.272.823709117

ARCHIVEDATA.274.824748169

ARCHIVEDATA01.275.824749235

EXAMPLE.264.823634653

SYSAUX.257.823634489

SYSTEM.256.823634487

UNDOTBS1.258.823634489

UNDOTBS2.265.823634943

UNDOTBS3.266.823634945

USERS.259.823634491

ASMCMD> cp /home/grid/andy.dbf ./

copying /home/grid/andy.dbf -> +data/racdb/datafile/andy.dbf

ASMCMD> ls

ANDYLHZ.272.823709117

ARCHIVEDATA.274.824748169

ARCHIVEDATA01.275.824749235

EXAMPLE.264.823634653

SYSAUX.257.823634489

SYSTEM.256.823634487

UNDOTBS1.258.823634489

UNDOTBS2.265.823634943

UNDOTBS3.266.823634945

USERS.259.823634491

andy.dbf

ASMCMD>

移动数据文件到共享存储

SQL> alter database rename file '/home/oracle/andy.dbf' to '+data/racdb/datafile/andy.dbf';

Database altered.

SQL>

将数据文件online。

验证数据文件状态

SQL> select name,status from v$datafile;

NAME

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

STATUS

-------

+DATA/racdb/datafile/system.256.823634487

SYSTEM

+DATA/racdb/datafile/sysaux.257.823634489

ONLINE

+DATA/racdb/datafile/undotbs1.258.823634489

ONLINE

NAME

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

STATUS

-------

+DATA/racdb/datafile/users.259.823634491

ONLINE

+DATA/racdb/datafile/example.264.823634653

ONLINE

+DATA/racdb/datafile/undotbs2.265.823634943

ONLINE

NAME

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

STATUS

-------

+DATA/racdb/datafile/undotbs3.266.823634945

ONLINE

+DATA/racdb/datafile/andylhz.272.823709117

ONLINE

+DATA/racdb/datafile/archivedata.274.824748169

ONLINE

NAME

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

STATUS

-------

+DATA/racdb/datafile/archivedata01.275.824749235

ONLINE

+DATA/racdb/datafile/andy.dbf

ONLINE

11 rows selected.

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