If you are attending Oracle Openworld 2009, and are interested in learning a lot about oracle Rac and Grid computing, you can find a full list of Oracle Rac and Grid computing events Here (Starting at page 2 of the pdf doc).

In preparation for the event, you could read the following new 11gR2 white papers from Oracle, to understand the latest developments and arm yourself with questions.

Oracle Real Application Clusters 11g Release 2 Technical Overview

Oracle Real Application Clusters 11g Release 2 Overview of SCAN

Oracle Real Application Clusters One Node 11g Release 2 Technical Overview