-----创建用户-----
create user 用户名 identified by 密码;
-------赋权限-----
grant connect to 用户名;
grant DBA to 用户名;
grant create any table to 用户名;
grant insert any table to 用户名;
grant update any table to 用户名;
grant delete any table to 用户名;
grant select any table to 用户名;
grant drop any table to 用户名;
grant alter any table to 用户名;
grant under any table to 用户名;
grant comment any table to 用户名;
grant unlimited tablespace to 用户名;
commit;