Oracle修改TableSpace的Name
在Oracle10g以前，tablespace的name是不可以随意修改的，只能drop掉之后重建，但是在10g之后，oracle加入了修改的功能，除了system和sysaux两个表空间外，其他的表空间都可以改名。今天专门来记录一下这个特性：
为TableSpace改名的举例如下：
SQL> create tablespace wxq_tbs datafile '/opt/oracle/product/10.2.0/oradata/wangxiaoqi/wxq_tbs.dbf' size 1M;
Tablespace created.
SQL> alter tablespace wxq_tbs rename to wxq_tbs2;
Tablespace altered.
SQL>
select tablespace_name,status from dba_tablespaces;
TABLESPACE_NAME STATUS
------------------------------------------------------------ -------------
SYSTEM ONLINE
UNDOTBS1 ONLINE
SYSAUX ONLINE
TEMP ONLINE
USERS ONLINE
OWB_TBS ONLINE
RECOVERY_TBS ONLINE
STREAM_TBS ONLINE
WXQ_TBS2 ONLINE
SQL> select tablespace_name,file_name,status from dba_data_files;
TABLESPACE_N FILE_NAME STATUS
------------ ------------------------------------------------------------------ -------------
USERS /opt/oracle/product/10.2.0/oradata/wangxiaoqi/users01.dbf AVAILABLE
SYSAUX /opt/oracle/product/10.2.0/oradata/wangxiaoqi/sysaux01.dbf AVAILABLE
UNDOTBS1 /opt/oracle/product/10.2.0/oradata/wangxiaoqi/undotbs01.dbf AVAILABLE
SYSTEM /opt/oracle/product/10.2.0/oradata/wangxiaoqi/system01.dbf AVAILABLE
OWB_TBS /opt/oracle/product/10.2.0/oradata/wangxiaoqi/owb_tbs01.dbf AVAILABLE
RECOVERY_TBS /opt/oracle/product/10.2.0/oradata/wangxiaoqi/recover_tbs.dbf AVAILABLE
STREAM_TBS /opt/oracle/product/10.2.0/oradata/wangxiaoqi/stream_tbs01.dbf AVAILABLE
WXQ_TBS2 /opt/oracle/product/10.2.0/oradata/wangxiaoqi/wxq_tbs.dbf AVAILABLE
此时，datafile的名字没有改过来，与tablespace不一致，所以需要再改一下，这个过程相对来说比较复杂，要以下面的顺序来修改：
1、把相应的tablespace改成read only;
2、把需要修改的datafile置为offline;
3、在操作系统中改名
4、alter database rename file .. to ..;
5、把相应的datafile置为online;
6、把相应tablespace改成read write;
具体操作如下：
SQL>
alter database rename file '/opt/oracle/product/10.2.0/oradata/wangxiaoqi/wxq_tbs.dbf' to '/opt/oracle/product/10.2.0/oradata/wangxiaoqi/wxq_tbs2.dbf';
alter database rename file '/opt/oracle/product/10.2.0/oradata/wangxiaoqi/wxq_tbs.dbf' to '/opt/oracle/product/10.2.0/oradata/wangxiaoqi/wxq_tbs2.dbf'
*
ERROR at line 1:
ORA-01511: error in renaming log/data files
ORA-01121: cannot rename database file 11 - file is in use or recovery
ORA-01110: data file 11: '/opt/oracle/product/10.2.0/oradata/wangxiaoqi/wxq_tbs.dbf'
SQL>
alter tablespace wxq_tbs2 read only;
Tablespace altered.
SQL>
alter database datafile '/opt/oracle/product/10.2.0/oradata/wangxiaoqi/wxq_tbs.dbf' offline;
Database altered.
SQL>
host mv /opt/oracle/product/10.2.0/oradata/wangxiaoqi/wxq_tbs.dbf /opt/oracle/product/10.2.0/oradata/wangxiaoqi/wxq_tbs2.dbf;
SQL>
host ls -l /opt/oracle/product/10.2.0/oradata/wangxiaoqi/
total 6115528
-rw-r----- 1 oracle oinstall 1073750016 Jul 28 01:35 owb_tbs01.dbf
-rw-r----- 1 oracle oinstall 26222592 Jul 28 01:35 recover_tbs.dbf
-rw-r----- 1 oracle oinstall 209723392 Jul 28 01:35 stream_tbs01.dbf
-rw-r----- 1 oracle oinstall 471867392 Jul 28 16:05 sysaux01.dbf
-rw-r----- 1 oracle oinstall 566239232 Jul 28 16:08 system01.dbf
-rw-r----- 1 oracle oinstall 31465472 Jul 27 22:00 temp01.dbf
-rw-r----- 1 oracle oinstall 513810432 Jul 28 16:10 undotbs01.dbf
-rw-r----- 1 oracle oinstall 5251072 Jul 28 10:14 users01.dbf
-rw-r----- 1 oracle oinstall 1056768 Jul 28 16:08 wxq_tbs2.dbf
SQL>
alter database rename file '/opt/oracle/product/10.2.0/oradata/wangxiaoqi/wxq_tbs.dbf' to '/opt/oracle/product/10.2.0/oradata/wangxiaoqi/wxq_tbs2.dbf';
Database altered.
SQL>
alter database datafile '/opt/oracle/product/10.2.0/oradata/wangxiaoqi/wxq_tbs2.dbf' online;
Database altered.
SQL>
alter tablespace wxq_tbs2 read write;
Tablespace altered.
SQL>
select tablespace_name,file_name,status from dba_data_files;
TABLESPACE_N FILE_NAME STATUS
------------ ------------------------------------------------------------------ ------------------
USERS /opt/oracle/product/10.2.0/oradata/wangxiaoqi/users01.dbf AVAILABLE
SYSAUX /opt/oracle/product/10.2.0/oradata/wangxiaoqi/sysaux01.dbf AVAILABLE
UNDOTBS1 /opt/oracle/product/10.2.0/oradata/wangxiaoqi/undotbs01.dbf AVAILABLE
SYSTEM /opt/oracle/product/10.2.0/oradata/wangxiaoqi/system01.dbf AVAILABLE
OWB_TBS /opt/oracle/product/10.2.0/oradata/wangxiaoqi/owb_tbs01.dbf AVAILABLE
RECOVERY_TBS /opt/oracle/product/10.2.0/oradata/wangxiaoqi/recover_tbs.dbf AVAILABLE
STREAM_TBS /opt/oracle/product/10.2.0/oradata/wangxiaoqi/stream_tbs01.dbf AVAILABLE
WXQ_TBS2 /opt/oracle/product/10.2.0/oradata/wangxiaoqi/wxq_tbs2.dbf AVAILABLE
8 rows selected.
至此，就全部修改完成了。再强调一下，只有在10g中才能够修改，10g以前是不可以的。