[moe]

What are the advantages of CitusDB over Oracle RAC?

Your pricing page tells me you will charge me as much as you think I can afford, so Oracle kind of is the elephant in the room here.

[dtauzell]

One big difference seems to be that Oracle RAC uses a shared disk for each node. This means you need a fast disk. Oracle ships a lot of data between RAC nodes so you need a fast interconnect between your nodes (e.g. infiniband).