I see many people bashing Oracle/Ellison, but they are not alone in this. MS does the same thing as well. The really worrying thing is that such practices are deemed to be legal. The entire principle of Free Markets is underpinned by consumers having accurate information about the goods they are purchasing. Having licensing agreements that are expressly designed to prevent the dissemination of product-information, goes against everything that Capitalism and Free-Markets stand for.
The fact that there are no government regulations against such behavior, is precisely what leads people to think that we are living in a Corporatocracy, and not a Free Market.
What is your basis for this claim? Are you aware of a single successful lawsuit on the basis of a clause like this? If not, you can't claim that it's "deemed to be legal", since only a court can do such deeming.