We have added the new Oracle hub to our Spoke Calculator. You need to do the calculation twice, once for the disc side and once for the none disc side.
Here are some figures for you to work with:
24" Dominator 2 - 227.6/229.4mm
26" Dominator 2 - 253.4/255.0mm
29" Dominator 2 - 282.6/282.1mm
Please note that these are provisional figures and may change by a few mm when we have built a few wheels up.