Advanced Queuing in Oracle

 Advanced Queuing in Oracle

Advanced Queuing is a feature in Oracle Database that allows you to create queues for sending and receiving messages. Queues can be used to enable asynchronous processing of tasks or to communicate between different applications or systems. Advanced Queuing provides additional features such as message prioritization, message expiration, and message grouping.

Here is an example of creating a queue:

BEGIN

   DBMS_AQADM.CREATE_QUEUE_TABLE(

      queue_table => 'my_queue_table',

      queue_payload_type => 'my_payload_type'

   );

   DBMS_AQADM.CREATE_QUEUE(

      queue_name => 'my_queue',

      queue_table => 'my_queue_table'

   );

END;

/

This example creates a queue table named "my_queue_table" and a queue named "my_queue" that uses the "my_payload_type" data type. Messages can be added to the queue using the DBMS_AQ.ENQUEUE procedure and retrieved from the queue using the DBMS_AQ.DEQUEUE procedure.