When building business intelligence applications data is important, but the key piece is making the data easily accessible so that the end-user can use it to improve upon the business. This session explains how developers can take advantage of their existing J2EE and data warehouse servers as a platform to create extremely powerful interactive business intelligence applications, which can be used for guided analyses by management. Attendees will see how to use Oracle 9i, OLAP Service, JDeveloper 9i and BI Beans to build a powerful forecasting and what-if analysis application. An actual application will be presented. The experiences of the development process will be presented along with tips and techniques.