About the Discoverer Java EE applications

1-12 Oracle Fusion Middleware Configuration Guide for Oracle Business Intelligence Discoverer

1.8.2 About the Discoverer client tier and Discoverer Viewer

For Discoverer Viewer, the minimum requirement for the client machine is that it can run HTML through a Web browser. For information about supported Web browser versions for Discoverer, see Oracle Fusion Middleware Installation Guide for Oracle Portal, Forms, Reports and Discoverer.

1.9 About the Discoverer middle tier

The Discoverer middle tier is the portion of the Discoverer architecture that the Discoverer middle-tier manager maintains. Figure 1–7 Discoverer middle tier As shown in Figure 1–7 , the Discoverer middle tier consists of: ■ Discoverer Java EE applications. For more information, see Section 1.9.1, About the Discoverer Java EE applications. ■ Discoverer CORBA components. For more information, see Section 1.9.2, About the Discoverer CORBA components. Notes ■ The Discoverer middle tier also stores the Discoverer Plus applet, which is downloaded to client machines when Discoverer end users run Discoverer Plus for the first time. For more information, see Chapter 2, Starting Oracle BI Discoverer. ■ All machines that run the Discoverer middle tier must be on the same subnet.

1.9.1 About the Discoverer Java EE applications

As shown in Figure 1–8 , the Discoverer Java EE applications comprise the following: ■ Discoverer servlet for more information, see Section 1.9.1.1, What is the Discoverer servlet?. ■ Discoverer Plus servlet for more information, see Section 1.9.1.2, What is the Discoverer Plus servlet?. ■ Discoverer Portlet Provider servlet for more information, see Section 1.9.1.3, What is the Discoverer Portlet Provider servlet?. ■ Discoverer Web Services servlet for more information, see Section 1.9.1.4, What is the Discoverer Web Services servlet?. Introducing Oracle BI Discoverer 1-13 Figure 1–8 Discoverer Java EE applications A servlet comprises modules of Java code that run on a server machine to answer requests from client machines. Using a servlet minimizes client-side processing. The Discoverer servlets are deployed into the WebLogic managed server, which includes a servlet engine to run servlets. For more information about starting and stopping the Discoverer servlets, see Section 4.4, About starting and stopping Discoverer servlets . 1.9.1.1 What is the Discoverer servlet? The Discoverer servlet manages connections and login for Discoverer Plus and Discoverer Viewer. 1.9.1.2 What is the Discoverer Plus servlet? The Discoverer Plus servlet handles traffic between the Discoverer Plus Relational applet and the Discoverer Session process started for that session. 1.9.1.3 What is the Discoverer Portlet Provider servlet? The Discoverer Portlet Provider servlet provides a user interface for publishing Discoverer worksheets and links to Discoverer workbooks on a portal page. For more information about Discoverer Portlet Provider, see Oracle Fusion Middleware Guide to Publishing Oracle Business Intelligence Discoverer Portlets. 1.9.1.4 What is the Discoverer Web Services servlet? The Discoverer Web Services servlet provides an Application Programming Interface API to obtain Discoverer connections, workbooks, worksheets; to execute worksheet queries; and to return worksheet content through the SOAP protocol. For more information, see Oracle Fusion Middleware Users Guide for Oracle Business Intelligence Discoverer Web Services API.

1.9.2 About the Discoverer CORBA components