Yes, Absolutely. I did this on Windows and Linux 64 bit machines. Basically BPM or SOA have nothing to do with 64 bit or 32 Bit. BUT it is the underlying Weblogic Server that matters. On 64 Bit machines (windows or linux), first install 64 Bit JDK (Sun or JRockit). Then put this java home in path and make sure java -version refers this. Then download Weblogic Server Generic Installer (.jar version). Now install the Weblogic using like java -d64 -jar weblogicxxxx.jar. After this install BPM on top of this and you are good to go. Same thing applies for Windows/Linux.