创建一个触发器，将角色授予每个新创建的用户

Question

I'm having a problem with creating a trigger that grants a role each time I create a new user how can I do it?

CREATE TRIGGER  grant_role_to_user
AFTER  insert ON "here I need the right table" 
FOR EACH ROW
BEGIN
    GRANT role_1 to : NEW.USERNAME
END;
/

I tried the table all_users, dba_users; but it gives me an error "can't create a trigger on this view"

using oracle 10g

Answer 1

Include GRANT ROLE into a script you use to create new users, ie

create user        mike     identified by lion;
grant role_1 to    mike;

Answer 2

I think you dont need trigger for it.

Just assign this role to public and every user will have this role assigned.(including user that will be created in the future). But be aware about what you are doing. You really mean it.

grant role_1 to public;