With this version of Studio Enterprise Edition for UNIX you can create applications that can run as a 64-bit executable (in a 64-bit address space). To do this, Studio Enterprise Edition for UNIX must be installed on a UNIX system that supports 64-bit executables. Support for 64-bit executables is an option on some UNIX operating systems; when this is the case, you must choose to install a 64-bit kernel when you install the operating system.
If your UNIX operating system can support both 32-bit and 64-bit executables, then both a 32-bit version and a 64-bit version of Studio Enterprise Edition for UNIX is installed on your system. This enables you to create applications for both 64-bit and 32-bit execution, and to migrate applications from a 32-bit execution mode to 64-bit execution mode.