A few days ago we had an AMIS Query Report dealing with the items we thought were useful to pass on regarding Oracle Open World this year. The database issue were split in presentations from Gerwin Hendriksen and me.
My session dealt with Grid 2.0, XMLDB, Building a APEX content management system while using XMLDB functionality and, among others, Oracle Open Source items and can be seen via the following SlideShare presentation.
HTH
Marco