Description of the illustration ashia_dt_026.eps
This figure shows four tiers:
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The Client Tier, with wireless and mobile devices, as well as desktop users.
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The Web Tier, with a network load balancer, internal users, and two instances of Oracle HTTP Server.
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The Application Tier, with an Active/Active Cluster. It contains a domain with an Administration Server and two Managed Servers.
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The Data Tier, which contains a RAC Database with schemas.