One of my clients approached me a while back, they are on OBIEE version 11.1.1.7+ , There Web Client is Internet Explorer 11
When trying to create a report in Analysis OBIEE is not responding or working as expected.
Oracle have stated they are aware of this problem and Version 11.1.1.9+ Will support IE 11
We can expect OBIEE 11.1.1.9+ to be released summer of 2014.
So I suppose we will have to wait or use another browser... :<