8
A Sample Application Using AQ

In Chapter 1 we described a messaging system for an imaginary company, BooksOnLine. In this chapter we consider the features of AQ in the context of a sample application based on that scenario.

• A Sample Application

• General Features
  • System Level Access Control

  • Structured Payload

  • Queue Level Access Control

  • Non-Persistent Queues

  • Retention and Message History

  • Publish/Subscribe Support

  • Support for Oracle Parallel Server

  • Support for Statistics Views

• ENQUEUE Features
  • Subscriptions and Recipient Lists

  • Priority and Ordering of Messages

  • Time Specification: Delay

  • Time Specification: Expiration

  • Message Grouping

  • Asynchronous Notifications

• DEQUEUE Features
  • Dequeue Methods

  • Multiple Recipients

  • Local and Remote Recipients

  • Message Navigation in Dequeue

  • Modes of Dequeuing

  • Optimization of Waiting for Arrival of Messages

  • Retry with Delay Interval

  • Exception Handling

  • Rule-based Subscription

  • Listen Capability

• Propagation Features
  • Propagation

  • Propagation Scheduling

  • Propagation of Messages with LOB Attributes

  • Enhanced Propagation Scheduling Capabilities

  • Exception Handling During Propagation