ORACLE 表空间
1、/*第1步:创建数据表空间 */
create tablespace user_data
logging
datafile 'D:\oracle\oradata\Oracle9i\user_data.dbf '
size 50m
autoextend on
next 50m maxsize 20480m
extent management local;
如:

2、/*第2步:创建临时表空间 */
create temporary tablespace user_temp
tempfile 'D:\oracle\oradata\Oracle9i\user_temp.dbf'
size 50m
autoextend on
next 50m maxsize 20480m
extent management local;
如:

3、/*第3步:创建用户并指定表空间 */
create user username identified by password
default tablespace user_data /* 数据表空间 */
temporary tablespace user_temp; /* 临时表空间 */
如:

4、/*第4步:给用户授予权限 */
grant connect,resource,dba to username;
完成以上四步即完成用户及表空间的创建。

5、/*删除用户及表空间*/
drop user username cascade;
DROP TABLESPACE user_data INCLUDING CONTENTS AND DATAFILES;
DROP temporary TABLESPACE user_temp INCLUDING CONTENTS AND DATAFILES;

1、/*查看表空间和临时表空间使用情况*/
select *
from (Select a.tablespace_name "表空间名",
to_char(a.bytes / 1024 / 1024, '999,999') "表空间总(M)",
to_char(b.bytes / 1024 / 1024, '999,999.99') "空闲空间(M)",
to_char(a.bytes / 1024 / 1024 - b.bytes / 1024 / 1024,
'999,999.99') "已使用空间(M)",
to_char((1 - b.bytes / a.bytes) * 100, '99.99') || '%' "使用比"
from (select tablespace_name, sum(bytes) bytes
from dba_data_files
group by tablespace_name) a,
(select tablespace_name, sum(bytes) bytes
from dba_free_space
group by tablespace_name) b
where a.tablespace_name = b.tablespace_name
union all
select c.tablespace_name,
to_char(c.bytes / 1024 / 1024, '999,999') total_bytes,
to_char((c.bytes - d.bytes_used) / 1024 / 1024, '999,999.99') free_bytes,
to_char(d.bytes_used / 1024 / 1024, '999,999.99') use_bytes,
to_char(d.bytes_used * 100 / c.bytes, '99.99') || '%' use
from (select tablespace_name, sum(bytes) bytes
from dba_temp_files
group by tablespace_name) c,
(select tablespace_name, sum(bytes_cached) bytes_used
from v$temp_extent_pool
group by tablespace_name) d
where c.tablespace_name = d.tablespace_name)
order by "表空间名"

1、/* 增加数据文件,并设置自动扩展*/
alter tablespace dpp_date add datafile 'D:\ORACLE\PRODUCT\10.2.0\ORADATA\ORCL\DPP_DATE02.DBF' size 1024m autoextend on next 50m maxsize 200m;
2、/* 增加数据文件,并设置为无限扩展*/
alter tablespace dpp_date add datafile 'D:\ORACLE\PRODUCT\10.2.0\ORADATA\ORCL\DPP_DATE02.DBF' size 1024m autoextend on next 50m maxsize unlimited;
1、/*重新分配数据文件大小*/
alter database datafile 'D:\ORACLE\PRODUCT\10.2.0\ORADATA\ORCL\SYSAUX01.DBF' resize 500m;
2、/*重新分配临时表空间数据文件大小*/
alter database tempfile 'D:\ORACLE\PRODUCT\10.2.0\ORADATA\ORCL\TEMP01.DBF' resize 500M;