Don't do it. Are you mad ? :)
I would watch out for the JVM on HP-UX locking up and even refusing to respond to "kill -3" to get a thread dump.
We have been chasing this issue with HP for weeks now. Try this patch, try that patch, but it still locks up at random intervals from a few hours to a couple of days.
Never, never, never have I seen any issues like this when running on Win2K.
OF course we are running on old versions, but it should not be possible to lock up a VM like this in pure Java.