........and if you continue and then lose your remaining source you are down to the RAT (hydraulic driven) Emer Gen which will put you into the Emer Elec Config.
From A320 200 Series QRH 2.32, the Ldg Dist Factor is 3.15 times a working reference figure (from QRH 4.03) of around 900m so you are now scratching around looking for a 3300m runway (including a factor of 15% wriggle room). Better perhaps to have stuck it on the ground when you still had that 1 main source?
Cheers
mcdhu