To address some performance issues related to the amount of memory we are able to allocate to JAVA heap we are going to be moving from a 32 bit RHEL6 server to a new server running 64bit RHEL6. From scanning documentation and listserv activity it looks like we will definitely need to go with the 64 bit JDK and set the -d64 flag when we allocate memory.
Beyond those two considerations, is there anything else we need to address differently than we did with our 32-bit install? Anything related to Apache, PHP, or MySQL?
Also, if anybody has any experience with VuFind and RHEL6 64-bit and has some advice to pass along that would be great.