1.查询表空间使用情况：

SELECT UPPER(F.TABLESPACE_NAME) "表空间名",

D.TOT_GROOTTE_MB "表空间大小(M)",

D.TOT_GROOTTE_MB - F.TOTAL_BYTES "已使用空间(M)",

TO_CHAR(ROUND((D.TOT_GROOTTE_MB - F.TOTAL_BYTES) / D.TOT_GROOTTE_MB * 100,2),'990.99') || '%' "使用比",

F.TOTAL_BYTES "空闲空间(M)",

F.MAX_BYTES "最大块(M)"

FROM (SELECT TABLESPACE_NAME,

ROUND(SUM(BYTES) / (1024 * 1024), 2) TOTAL_BYTES,

ROUND(MAX(BYTES) / (1024 * 1024), 2) MAX_BYTES

FROM SYS.DBA_FREE_SPACE

GROUP BY TABLESPACE_NAME) F,

(SELECT DD.TABLESPACE_NAME,

ROUND(SUM(DD.BYTES) / (1024 * 1024), 2) TOT_GROOTTE_MB

FROM SYS.DBA_DATA_FILES DD

GROUP BY DD.TABLESPACE_NAME) D

WHERE D.TABLESPACE_NAME = F.TABLESPACE_NAME

ORDER BY 1;

2.查询表空间位置：

select t1.name,t2.name

from v$tablespace t1,v$datafile t2

where t1.ts# = t2.ts#;

3.修改表空间

3.1 新增数据文件，并且允许数据文件自动增长

alter tablespace SSWL   add datafile 'D:\dbdata\SSWL1.DBF' size 50m autoextend on next 5m maxsize unlimited;

3.2 允许已存在的数据文件自动增长(最大32G)

alter database datafile 'D:\ORACLE\PRODUCT\10.2.0\ORADATA\EDWTEST\APP03.DBF'  autoextend on next 5m maxsize 100m;

4.创建关联表空间

create tablespace sswl datafile 'D:\dbdata\sswl.dbf' size 50m autoextend on next 5m maxsize unlimited;

create tablespace TS_USER datafile 'D:\dbdata\user.dbf' size 50m autoextend on next 5m maxsize unlimited;

CREATE USER sswl_user IDENTIFIED BY connect_sswluser DEFAULT TABLESPACE sswl;

CREATE USER ssmiduser IDENTIFIED BY asklw DEFAULT TABLESPACE TS_USER;

grant dba to sswl_user;

grant dba to ssmiduser;