首页 > 代码库 > 【练习】数据文件的更改:改名或改路径 users01.dbf-->users01_bak.dbf
【练习】数据文件的更改:改名或改路径 users01.dbf-->users01_bak.dbf
方法一：
1.将数据文件的状态offline
SQL> select file_name,tablespace_name from dba_data_files where file_name like ‘%user%‘;
FILE_NAME
--------------------------------------------------------------------------------
TABLESPACE_NAME
------------------------------
/u01/app/oracle/oradata/ORA11GR2/users01.dbf
USERS
SQL> alter tablespace users offline;
Tablespace altered.
SQL> select name,status from v$datafile;
NAME
--------------------------------------------------------------------------------
STATUS
--------------------------------------------------
/u01/app/oracle/oradata/ORA11GR2/system01.dbf
SYSTEM
/u01/app/oracle/oradata/ORA11GR2/sysaux01.dbf
ONLINE
/u01/app/oracle/oradata/ORA11GR2/undotbs01.dbf
ONLINE
NAME
--------------------------------------------------------------------------------
STATUS
--------------------------------------------------
/u01/app/oracle/oradata/ORA11GR2/users01.dbf
OFFLINE
/u01/app/oracle/oradata/ORA11GR2/example01.dbf
ONLINE
2.操作系统层面完成真正mv改名操作
SQL> ! mv /u01/app/oracle/oradata/ORA11GR2/users01.dbf /u01/app/oracle/oradata/ORA11GR2/users01_bak.dbf
3.数据库层面修改数据文件名--->告诉数据库
SQL> alter database rename file
2 ‘/u01/app/oracle/oradata/ORA11GR2/users01.dbf‘ to
3 ‘/u01/app/oracle/oradata/ORA11GR2/users01_bak.dbf‘;
Database altered.
4.把更改完之后的文件置为Online对外提供服务
表空间->online
SQL> alter tablespace users online;
Tablespace altered.
SQL> select name,status from v$datafile;
NAME STATUS
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- --------------------------------------------------
/u01/app/oracle/oradata/ORA11GR2/system01.dbf SYSTEM
/u01/app/oracle/oradata/ORA11GR2/sysaux01.dbf ONLINE
/u01/app/oracle/oradata/ORA11GR2/undotbs01.dbf ONLINE
/u01/app/oracle/oradata/ORA11GR2/users01_bak.dbf ONLINE
/u01/app/oracle/oradata/ORA11GR2/example01.dbf ONLINE
方法二：（适用所有数据文件，但是系统文件只能用这种方式）
1、shutdown 关库
SQL> shutdown immediate
Database closed.
Database dismounted.
ORACLE instance shut down.
2.操作系统层面真正执行mv
SQL> ! mv /u01/app/oracle/oradata/ORA11GR2/users01_bak.dbf /u01/app/oracle/oradata/ORA11GR2/users01.dbf
3.启动到mount
SQL> startup mount
ORACLE instance started.
Total System Global Area 830930944 bytes
Fixed Size 2257800 bytes
Variable Size 536874104 bytes
Database Buffers 289406976 bytes
Redo Buffers 2392064 bytes
Database mounted.
4.先通知数据库要更改数据库的结构-->rename
SQL> alter database rename file
2 ‘/u01/app/oracle/oradata/ORA11GR2/users01_bak.dbf‘ to
3 ‘/u01/app/oracle/oradata/ORA11GR2/users01.dbf‘;
Database altered.
SQL> alter database open;
Database altered.
【练习】数据文件的更改:改名或改路径 users01.dbf-->users01_bak.dbf
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