I've had tons of issues attempting to install Oracle's Java. When I first tried, I couldn't even get it to untar on its own, and past that, the bin had tons of issues. None of the tutorials I followed seemed to work for me.
It seems to be a headache and downtime of my other servers just waiting to happen.
Here's the thing that confuses me, why would Tekkit 2 work fine on OpenJDK, but as soon as we upgrade, it's broken? It just seems odd to me. I know it's surely not incompatibility with CraftBukkit as 4 other (vanilla-ish) minecraft (CraftBukkit, unmodded) servers run on the same box using other instances of the same version of OpenJDK.
I'd just rather avoid the whole Oracle Java mess, but if it has to be done, it may be a worthwhile upgrade.
P.S. Sorry, I never saw that post earlier, I'm tired, I miss things :P