Oracle Locator is available as part of every edition of the Oracle Server, and is extended in Enterprise Edition through the Spatial option. OBIEE 11g is aware of Oracle Spatial and Map Viewer, a component of Fusion Middleware.
This paper takes an in depth look at the integration of OBIEE and Spatial, starting with an overview of Oracle Spatial as a data source, through integrating and troubleshooting the display of spatial data through Map Viewer.