Sterling B2B Map editor has always had a 32-bit JDK requirement to run on the Windows client. With the increases we've seen in XML schema sizes and mapping complexity, we are running into more OOM issues linked to the 32-bit environment the editor runs in. It is also difficult to obtain and install a 32-bit IBM JDK for Windows, as the B2B Integrator does not currently provide an executable to install the 32-bit JDK. Documentation instead directs to the IBM Eclipse Development environment to obtain the JDK, which also does not have an executable to install it as the default java.
Please support the map editor on the same 64-bit JDK that is provided with the installation media.