如果数据库处于非归档模式下，可以通过如下步骤更改文件路径:
1.关闭数据库
2.系统级进行文件复制
3.启动数据库到mount状态
3.通过SQL修改数据文件位置
4.打开数据库

以下是实际操作的步骤示范：

1.数据库处于非归档模式
SQL> archive log list;
Database log mode              No Archive Mode
Automatic archival             Enabled
Archive destination            /opt/oracle/oradata/conner/archive
Oldest online log sequence     150
Current log sequence           153
 

2.需要移动test.dbf文件
SQL> select name from v$datafile;

NAME
------------------------------------------------------------
/opt/oracle/oradata/conner/system01.dbf
/opt/oracle/oradata/conner/undotbs01.dbf
/opt/oracle/oradata/conner/users01.dbf
/opt/oracle/test.dbf
 

3.关闭数据库
SQL> shutdown immediate;
Database closed.
Database dismounted.
ORACLE instance shut down.
 

4.复制文件到新的位置
SQL> ! cp /opt/oracle/test.dbf /opt/oracle/oradata/conner/test.dbf
 

5.启动数据库到mount状态
SQL> startup mount;
ORACLE instance started.

Total System Global Area  101782828 bytes
Fixed Size                   451884 bytes
Variable Size              37748736 bytes
Database Buffers           62914560 bytes
Redo Buffers                 667648 bytes
Database mounted.
SQL> select name from v$datafile;

NAME
-----------------------------------------------------------
/opt/oracle/oradata/conner/system01.dbf
/opt/oracle/oradata/conner/undotbs01.dbf
/opt/oracle/oradata/conner/users01.dbf
/opt/oracle/test.dbf
 

6.修改文件位置
SQL> alter database rename file '/opt/oracle/test.dbf' to '/opt/oracle/oradata/conner/test.dbf';

Database altered.

SQL> alter database open;

Database altered.

SQL> select name from v$datafile;

NAME
----------------------------------------------------------------
/opt/oracle/oradata/conner/system01.dbf
/opt/oracle/oradata/conner/undotbs01.dbf
/opt/oracle/oradata/conner/users01.dbf
/opt/oracle/oradata/conner/test.dbf