1) The first step in preparing to use advanced queueing is to adjust the parameter of the database
2) You must login as SYS or SYSTEM and grant a privilege to the user
3) After creating a queue, the owner of the queue can allow other users to submit messages to the queue. To do this, the owner of the queue must grant other users these two privileges: (1) The ENQUEUE ANY QUEUE system privilege ( or the ENQUEUE object privilege on a specific queue), and (2) the DEQUEUE ANY QUEUE system privilege (or the DEQUEUE object privilege on a specific queue.)