This week's book giveaway is in the OO, Patterns, UML and Refactoring forum. We're giving away four copies of Refactoring for Software Design Smells: Managing Technical Debt and have Girish Suryanarayana, Ganesh Samarthyam & Tushar Sharma on-line! See this thread for details.
Oracle would be a good bet. I don't know if they offer a download of just the drivers, but if they do you'll find it somewhere in there. Of course the JDBC drivers are shipped with the product - so if you have Oracle the you already have the drivers.