create user lych0002 indentified 123456;
grant connect,resource to lych0001;
grant connect,resource to lych0002;
grant create create synonym to lych0001;
grant create public create synonym to lych0001;
login on lych0001
create sequence seq001
start with 1
increment by 1
maxvalue 300
nocycle
cache 10;
create public synonym seq001 for lych0001.seq001;
grant select on seq001 to lych0002;
此时lych00002用户便可以使用seq001的sequnence了