Self service analytics is an amazing feature with OBIEE. Users are empowered to get at the information they need without the need to ask for new views from IT. Through the development of the application, the data is arranged using business terms that those users can understand.
Improvements to My Organization:
We have used OBIEE at several clients and the feedback has been fantastic on the dashboards, scorecards, and reporting that we have created. Clients love that OBIEE is a central location to view data from multiple sources in terms that make sense to the business user.
Room for Improvement:
There is some room for improvement on the development side, older versions use a 32-bit administration studio. Some of the controls in this older studio are a little clunky and it can be easy to get lost as a new developer in the various wizards and windows.
Use of Solution:
Clustering and Single-Sign on can be difficult.
The initial setup of OBIEE depends on the data sources and their complexity. There is a great community with tons of blogs and the OTN Forums where professionals are willing to share and help out with any setup questions.