That depends on how the fair use argument goes. The downside of such arguments is that you generally have to argue that in court. I tend to believe that Oracle would prefer to leave this untested, as they'd probably benefit more from leaving it uncertain than to spend a ton of money litigating it with a chance of blowing up the whole scheme.
I mean, given that this is a trivial work with no discernible literary merit, a full quotation is arguably a reasonable step in order to fully demonstrate the triviality of the work.
The sole purpose of this poem, given that it's hidden away deep in the plumbing of the system where almost nobody ever sees it, is to dissuade people from making something that is interoperable with Oracle's DBs, after all.
One normally displays art that they're proud of where people can appreciate it, rather than making it a technical requirement for a machine to recite bad poetry to a database before the database will deign to respond.
It could be worse, though. Just imagine if this was Vogon poetry...
Someone should just publish that as public domain, and see what happens if Oracle challenges it. How can they prove that a bunch of bytes sent over the network are meant as prior art and so on.
Prior art only applies to patents, not copyrights. The preexisting publication of copies of this poem would also undercut any such attempt.
That said, the fact that one can ONLY find copies of the work by looking to 3rd parties (rather than Oracle) should undercut any arguments they try to make against discussing it for the purpose of criticism to be fair use.
