[link|http://www.blackbaud.com/support/hwspecs/re7asa.pdf|Adaptive Server Anywhere version of Raiser's Edge]...
Looks like you have your "Linux supportable" Database... matter of fact ASA, is Very Well supported on Linux... ... that product(ASA) was basically a "tweak a few library includes ; configure && make && make install" from the standard *NIX code when they first tried Linux support.
I am not sure but you *MAY* be able to take the "Windows" DB and restore it on a Linux machine with it installed alreay and just start ASA. I have done that with Oracle... on Intel Hardware(IA32-)... but not RISC to Intel.