Advanced Queuing - Oracle

Enqueue Features
Refer to Chapter 17, "Internet Access to Advanced Queuing" for more information
about IDAP.
Nonrepudiation and the AQ$ View
Enqueue Features
Advanced Queuing maintains the entire history of information about a message
along with the message itself. You can look up history information by using the
AQ$ view. This information serves as the proof of sending and
receiving of messages and can be used for nonrepudiation of the sender and
nonrepudiation of the receiver. Refer to Chapter 10, "Administrative Interface:
Views" for more information about the AQ$ view.
The following information is kept at enqueue for nonrepudiation of the enqueuer:
AQ agent doing the enqueue
Database user doing the enqueue
Enqueue time
Transaction ID of the transaction doing the enqueue
The following information is kept at dequeue for nonrepudiation of the dequeuer:
AQ agent doing dequeue
Database user doing dequeue
Dequeue time
Transaction ID of the transaction doing dequeue
After propagation, the Original_Msgid field in the destination queue of
propagation corresponds to the message ID of the source message. This field can be
used to correlate the propagated messages. This is useful for nonrepudiation of the
dequeuer of propagated messages.
Stronger nonrepudiation can be achieved by enqueuing the digital signature of the
sender at the time of enqueue with the message and by storing the digital signature
of the dequeuer at the time of dequeue.
The following features apply to enqueuing messages.
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