On May 26, Planboard organises it’s 3rd Planboard DBA Symposium. It’s an event by Oracle DBA’s for Oracle DBA’s, with presentations covering a wide range of topics (RAC Rolling upgrades, grouping in SQL, APEX and security to name a few)! See the full lineup here: http://www.planboard.com/?q=node/71
All other information (location, price, etc.) are on that page too. If you are an Oracle database professional and want to learn something and be able to discuss various things with likeminded professionals, be there!