This post is an absolute nightmare/facepalm. Basically my takeaway is "I guess I don't want to buy Oracle software". It's really mind blowing that this is the position of a major software company in this day and age. I mean I guess I shouldn't be shocked since it is in the EULA but man I'm kind of speechless (this clause has to be illegal in some countries, too).
Edit: as an aside as a bad guy this would make me very interested in reverse engineering Oracle products. If they disallow it for their customers the reaction times to any security issues will be lower and it will be pretty valuable to find bugs in their products.
Edit2: Seems like the blog was cracked. At least the "About" on the side seems to indicate that.
But the big difference is that it's realistic, allowed and in many cases warmly welcomed if you submit actual problems.
Sun had an open bug database, it was glorious. That got snapped shut after purchase.
That's just the crappy Oracle blog platform presentation. Many of the Oracle blogs have that there, presumably a username.
Pedantic: not illegal, but invalid.