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Getting Started with Oracle Event Processing 11g by Lloyd Williams, Robin J. Smith, Alexandre Alves

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High availability quality of services

Oracle Event Processing provides several HA adapters out of the box to allow you to create HA capable applications with different levels of precision and performance. After having understood Oracle Event Processing HA architecture, the next step is to learn Oracle Event Processing HA adapters and how to configure your desired quality of service.

Oracle Event Processing supports four active/active HA options with different quality of service (QoS) as follows:

  • Simple failover
  • Simple failover with buffering
  • Light-weight queue trimming
  • Precise recovery with JMS

These are detailed in the next sub-sections.

Simple failover

When configured for simple failover, there is negligible performance degradation, however your application ...

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