Installation guide

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Figure 4. Preferred Three-Tier OracleAS Deployment Topology
With four or more servers, a simple multi-tier topology can be built. An example with
five OracleAS servers is illustrated in Figure 5. This topology places two OracleAS
clustered servers with J2EE and Web Cache components “in front” of the other two
servers, intercepting user requests and input, and caching frequently accessed web
content for rapid response. Behind the Web Cache, the second and third servers hosts
“middle tier” components such as Portal, Wireless, Business Intelligence applications and
Forms/Reports.