oracle数据文件(表空间文件)被rm掉了。表空间如何删除

转自：http://blog.csdn.net/skylinethj/article/details/7892054

单位要将旧数据服务器的数据库迁移到新的服务器上，新服务器连接存储，在处理表空间的过程中不小心将新服务器上/oracle目录下的u01文件夹删除，于是删除表空间时出现问题，现在就演示一下如何解决这个问题

环境：10gR2

[oracle@db1 ~]$ sqlplus / as sysdba

SQL*Plus: Release 10.2.0.1.0 - Production on Wed Dec 21 11:31:18 2011

Copyright (c) 1982, 2005, Oracle.  All rights reserved.

 

Connected to:

Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - 64bit Production

With the Partitioning, Real Application Clusters, OLAP and Data Mining options

SQL> 

1.查看数据文件：

SQL> select name from v$datafile;

NAME

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

+DATA/orcl/system01.dbf

+DATA/orcl/undotbs01.dbf

+DATA/orcl/sysaux01.dbf

+DATA/orcl/users01.dbf

+DATA/orcl/undotbs02.dbf

/oracle/u01/app/oracle/oradata/orcl/SMS.dbf

/oracle/u01/app/oracle/oradata/orcl/WEBDB.dbf

7 rows selected.

2.查看数据文件状态

SQL> select file#,status,name from v$datafile where name like '%SMS%';

 

     FILE# STATUS

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

NAME

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

         6 ONLINE

/oracle/u01/app/oracle/oradata/orcl/SMS.dbf

 

1 rows selected.

3.确认操作系统上SMS数据文件已经不存在，u01文件夹都没有

[oracle@db1 ~]$ ll /oracle/

总计 6778872

drwxr-xr-x 2 oracle oinstall       4096 12-16 17:07 bak

-rw-rw-r-- 1 oracle oinstall        170 12-19 15:41 IMPORT.LOG

4.此时查看数据文件状态，状态没有异常
sec@ora10g> select file#,status,name from v$datafile where name like '%SMS%';
     FILE# STATUS  NAME
---------- ------- ------------------------------------------------------------
         6 ONLINE  /oracle/u01/app/oracle/oradata/orcl/SMS.dbf
       
5.手工将误删除的文件offline drop，成功

SQL> alter database datafile '/oracle/u01/app/oracle/oradata/orcl/SMS.dbf' offline drop;

Database altered.

6.此时，该文件的状态为“RECOVER”
SQL> select file#,status,name from v$datafile where name like '%SMS%';

     FILE# STATUS  NAME
---------- ------- ------------------------------------------------------------
         6 RECOVER /oracle/u01/app/oracle/oradata/orcl/SMS.dbf


7.演示删除表空间，成功。

SQL> alter database datafile '/oracle/u01/app/oracle/oradata/orcl/SMS.dbf' offline drop;

 

Database altered.

8.最后确认，删除得很彻底。

SQL>select file#,status,name from v$datafile where name like '%SMS%';

 

no rows selected

 

SQL> select name from v$datafile;

NAME

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

+DATA/orcl/system01.dbf

+DATA/orcl/undotbs01.dbf

+DATA/orcl/sysaux01.dbf

+DATA/orcl/users01.dbf

+DATA/orcl/undotbs02.dbf

/oracle/u01/app/oracle/oradata/orcl/WEBDB.dbf

6 rows selected.

9.下面的任务就是继续删除WEBDB