How to User DBMS Pipe

I am trying to User DBMS Pipe. When give the following SQl statements

      select dbms_pipe.create_pipe('test') from dual; it returns a error saying create_pipe does not gurantee to update the database.
How do I implement dbms pipe & what privilege is required for that.

Practise safe government....Use Kingdoms! Received on Mon Feb 17 1997 - 00:00:00 CST