Larry Ellison, the CEO of Oracle had this to say:
Oracle Fusion middleware has an open “hot-pluggable” architecture that allows customers the option of coupling BEA’s WebLogic Java Server to virtually all the components of the Fusion software suite. That’s just one example of how
customers can choose among Oracle and BEA middleware products, knowing that those products will gracefully interoperate and be supported for years to come.
I'm curious to see how BEA and Oracle products change to interoperate even more smoothly; The fact that they played so well together in the same environments was probably part of the reason Ellison wanted them for so many years.