Why are shared memory systems better?
Most of the high-performance platforms that Progress runs on support shared memory (including most UNIX systems, VMS, NT, and OS/2). There are three major advantages to using shared memory. First, you can use utilities like promon to monitor your database in these environments. Second, starting with V6.3, you can run writer processes that improve the handling of updates to your database. Third, you can have clients that directly connect to and do their own access to the database; this will greatly improve performance.