MMFILETOOLARGE, Size of rrrr region (ffff) is larger than maximum size supported for memory mapped I/O on this platform.
Run Time Error: GT.M and its Utility programs issue this to indicate an attempt to open the database ffff corresponding to region rrrr when the size of the database file is greater than the maximum size supported for memory mapped I/O.
Action: Consider as appropriate: migrating to a platform not having this limitation, using more, but smaller, regions, or using the BG access method.