Our Maximum Availability Architecture (MAA) team has quietly been amassing a formidable set of whitepapers about the Oracle Exadata Database Machine.  They're available here:

• MAA Best Practices - Exadata Database Machine

If you're one of the lucky ones with access to this hardware platform, you'll be pleased to hear that the MAA team has just published a new whitepaper with best practices for EBS environments:

• Oracle E-Business Suite on Exadata

This whitepaper covers the following topics:

• Getting to Exadata -- a high level overview of fresh installation on, and migration to, Exadata Database Machine with pointers to more detailed documentation
  
• High Availability and Disaster Recovery -- an overview of our MAA best practices with pointers to our detailed MAA Best Practices documentation
  
• Performance and Scalability -- best practices for running Oracle E-Business Suite on Exadata Database Machine based on our internal testing