If you want to read about Larry Ellison's personality and his management style, you should read - "The Difference Between God and Larry Ellison: Inside Oracle Corporation; God Doesn't Think He's Larry Ellison". (http://www.goodreads.com/book/show/181369.The_Difference_Bet...)

It's one of the best books written on him and the way he managed Oracle right from it's beginnings. He was damn good at selling things.