@elavoie I like your suggestion of using OC/ssbc funds for this, that had not occurred to me. It would also help to avoid the 24% VAT since OC/ssbc is hosted by OSC (a non-profit in USA).
I'll take your suggestion, I'll use 2000 USD from OC/ssbc when I have completed 83 hours (= 2000 USD divided by hourly rate of 24 USD) worth of work on DB compactions (I've done 23h so far, starting last week). That should buy us some time to see where the remaining funds will come from (if needed!). I like the idea of spreading the burden of this proposal on more than one OC, so it's not tough on any of them.