I'm reading this, uncertain of why I haven't tried that. I've looked at that several times in perldoc DBD::Oracle. I believe this is one of those cases where 'it works it out for itself' because I have other programs accessing these tables (though in their own schemas).
That said, I'll try anything at this point. I can see where it could be an issue, so I should do it...
*runs off and does it*
No dice. Worth a try, though.