create tablespace mytbs datafile 'd:\oracle\oradata\mytbs01.dbf' size 500m; 建表空间
create user user01 identified by u01;创建用户
alter user user01 identified by usr01;修改密码
drop user user01;删除用户
grant connect, resource,dba to user01;给用户赋权限
revoke connect, resource from user01;撤销用户权限