I've been doing research onto the best use of flash SSD with the Oracle RDBMS over the past year and Quest has produced a whitepaper summarizing the findings. You can get it here.
Understanding the performance dynamics of SSD is critical in modern Oracle performance management. I'm organizing my work on SSD Oracle performance into an online reference that I hope to continually update as I learn more.
Finally, I'll be speaking on this topic at Oracle Open World in just a few weeks - here are the session details:
Title: Making the Most of Solid-State Disk in Oracle Database 11g
Time Tuesday, 05:00 PM, InterContinental - InterContinental Ballroom A-