/*分为四步 */
/*第1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;
/*第2步：创建数据表空间 */
create tablespace test_data
logging
datafile 'D:\oracle\oradata\Oracle9i\user_data.dbf'
size 50m
autoextend on
next 50m maxsize 20480m
extent management local;
/*第3步：创建用户并指定表空间 */
create user username identified by password
default tablespace user_data
temporary tablespace user_temp;
/*第4步：给用户授予权限 */
grant connect,resource,dba to username;
文章来自：http://www.cnblogs.com/netsql/articles/1745978.html；