This illustration shows the Maximum Availability Architecture (MAA). The MAA architecture consists of a primary and a secondary site.

The primary site contains storage, two RAC databases, and an Oracle Application Server. The secondary site contains storage, a RAC physical standby database, a RAC logical standby database, and an Oracle Application Server.

A dedicated network connects the primary site and the standby site. Data Guard operates to transfer redo data from the primary site to the secondary site. A WAN traffic manager handles communication between the application servers on the primary and secondary sites. Clients send requests through the WAN traffic manager.

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