Technical data

Enterprise Data Center Topology: J2EE Applications

Enterprise Topology Overview 1-5

Figure 1–2 Enterprise Data Center Topology: J2EE Applications that need to access mod_plsql

Infrastructure DMZ

In this tier, you run all components of OracleAS Infrastructure 10g, except for Oracle

Application Server Single Sign-On and Oracle Delegated Administration Services,

which run in the Web Server Tier DMZ.

You install the OracleAS Infrastructure 10g behind another firewall so that Web servers

do not have direct access to other computers in the enterprise. Oracle Application

Server Metadata Repository and Oracle Internet Directory contain critical data used by

Oracle Application Server instances.

OracleAS Metadata Repository contains security metadata, management metadata,

and product metadata. J2EE and Web Cache instances and the infrastructure

components such as Oracle Application Server Single Sign-On use this repository.

Load Balancer

J2EE (without Web Cache)

DMZ

Firewall

External Clients

Intranet

Firewall

Web Cache

Oracle HTTP Server,

including mod_oc4j

Customer

Database

Business Data

Web Server Tier DMZ

Infrastructure DMZ

Intranet

Real Application Clusters

or Cold Failover Cluster

AJP

SQL*Net

mod_plsql

SQL*Net

Infrastructure Firewall

Oracle Internet