创建用户并赋值同义词

create  user passpa identified by passpa 

create or replace view zhiydba.mdc2_zy_med_view as
select ..............................

grant select  on mdc2_zy_med_view  to passpa

create or replace synonym passpa.mdc2_zy_med_view for zhiydba.mdc2_zy_med_view