I some may mentioned, I was at Oracle OpenWorld conference last week. The main points I retained regarding my point of interest are listed in the following prezi :
http://prezi.com/c1vlmudi2dh2/?utm_campaign=share&utm_medium=copy
Oracle fusion application is based on a large group of components like weblogic servers, databases, identity modules and so one. I’ll try in this article to explain how they are used and for what purpose.
Here is an interesting article on the impact of the latency on some usual Oracle SQL statement over Local, LAN and WAN networks.
http://markbairden.blogspot.fr/2012/03/database-performance-measuring-effects.html
Wan latency uses is 12ms which is small for this type of connection. Impact is huge with a factor of 10. To be taken into account in your designs !
Thank you Mark for this article !