oracle更改数据文件位置

环境：表空间t1

1,、将表空间t1置为offline状态

SQL> alter tablespace t1 offline;

Tablespace altered.

2、查询数据文件位置

SQL> select name from v$datafile;

NAME
--------------------------------------------------------------------------------
/u01/app/oracle/oradata/PROD1/system01.dbf
/u01/app/oracle/oradata/PROD1/sysaux01.dbf
/u01/app/oracle/oradata/PROD1/undotbs01.dbf
/u01/app/oracle/oradata/PROD1/users01.dbf
/u01/app/oracle/oradata/PROD1/t101.dbf

3、复制t1对应的数据文件到更改位置

$ cp t101.dbf /home/oracle/t101.dbf

4、 rename修改表空间t1数据文件为新的位置，并修改控制文件

SQL> alter tablespace t1 rename datafile '/u01/app/oracle/oradata/PROD1/t101.dbf' to '/home/oracle/t101.dbf';

Tablespace altered.

5、将表空间t1置为online状态

SQL> alter tablespace t1 online;

Tablespace altered.

6、查询表空间位置（两个视图都可以查看，效果一样）

SQL> select name from v$datafile;

NAME
--------------------------------------------------------------------------------
/u01/app/oracle/oradata/PROD1/system01.dbf
/u01/app/oracle/oradata/PROD1/sysaux01.dbf
/u01/app/oracle/oradata/PROD1/undotbs01.dbf
/u01/app/oracle/oradata/PROD1/users01.dbf
/home/oracle/t101.dbf

SQL> select file_name,tablespace_name from dba_data_files;

FILE_NAME
------------------------------------------------------------------------------------------------------------------------------------------------------
TABLESPACE_NAME
------------------------------
/u01/app/oracle/oradata/PROD1/system01.dbf
SYSTEM

/u01/app/oracle/oradata/PROD1/sysaux01.dbf
SYSAUX

/u01/app/oracle/oradata/PROD1/undotbs01.dbf
UNDOTBS1


FILE_NAME
------------------------------------------------------------------------------------------------------------------------------------------------------
TABLESPACE_NAME
------------------------------
/u01/app/oracle/oradata/PROD1/users01.dbf
USERS

/home/oracle/t101.dbf
T1

7、查询数据文件状态

SQL> select name,status from v$datafile;

NAME
------------------------------------------------------------------------------------------------------------------------------------------------------
STATUS
-------
/u01/app/oracle/oradata/PROD1/system01.dbf
SYSTEM

/u01/app/oracle/oradata/PROD1/sysaux01.dbf
ONLINE

/u01/app/oracle/oradata/PROD1/undotbs01.dbf
ONLINE


NAME
------------------------------------------------------------------------------------------------------------------------------------------------------
STATUS
-------
/u01/app/oracle/oradata/PROD1/users01.dbf
ONLINE

/home/oracle/t101.dbf
ONLINE