Advanced Queue (AQ) - functionality of lazy deletion in 11gR2
(Doc ID 1527760.1)
Last updated on AUGUST 30, 2021
Applies to:Oracle Database - Enterprise Edition - Version 126.96.36.199 and later
Gen 1 Exadata Cloud at Customer (Oracle Exadata Database Cloud Machine) - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Oracle Database Cloud Exadata Service - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Information in this document applies to any platform.
Created a multi consumer queue table. when Dequeue from the queue table, the change is not noticed in AQ$<queue_table> view until 30 seconds duration.
- Enqueue Message in queue table.
- Select count from AQ$<queue_table>; -- result = 1
- Dequeue message from queue_table
- Select count from AQ$<queue_table> -- result = 1
- wait 30 seconds ......
- Select count from AQ$<queue_table>; -- result = 0
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