Also, don't forget that Ellison was a former Apple board member, and probably not entirely unbiased on giving Google a rough time, and thus rallied behind Jobs when he vowed: "I'm going to destroy Android, because it's a stolen product. I'm willing to go thermonuclear war on this." [0]
Of course, it was maybe just Ellison shrewdly leaping on a opportunity to profit off an undervalued ecosystem (Java) at the time. Going on almost a decade now, things certainly proved to be not so clear cut in Google favor, and might still pay off.