As the days roll on from the original GE announcement to move to a 100% Oracle/Java solution, more details are slowly trickling in.
Directions Magazine has an article (Cutting Out the GIS Middleman: GE Energy Cements Relationship with Oracle to Build Enterprise Applications) that sheds some more light on GE's direction.
It seems to me that GE is trying to leap-frog over some of its GIS competitors who have used Oracle in the past but used it in a proprietary fashion.
[Updated: 11:46 am 15March07... I did not know that Oracle ships with landbase data. Have a look at http://www.oracle.com/technology/products/spatial/pdf/navteq_faq.pdf]