Is this combination a no-no? What issues do I expect to come across?
If the DB adapter is pure Ruby, you shouldn’t have any issues. If the
adapter compiles a native extension, you could run into compilation
issues (which ones exactly, I’m not sure; I guess anything with
pointers could lead to issues). If the adapter compiles to a 32 bit
executable (or is binary), you could run into linking/loading issues
(no idea if *NIX can load 32 bit shared objects into 64 bit