NECS APPROACH FOR PARALLEL-PROCESSING ON MAINFRAME SYSTEMS (PARALLEL OLTP, PARALLEL BATCH AND PARALLEL SQL)

NEC's ''Parallel ACOS'' series has realized high cost/performance main frames using highly paralleled TCMP (Tightly Coupled Multiprocessor) w hich consists of a multiple number of one-chip-CMOS (Complementary Met al Oxide Semiconductor)-processors and make it possible to connect mor e than eight processors. ''ACOS-4/XVP PX,'' NEC's operating system of mainframe utilizes this new hardware technology and introduces paralle l processing to the business application areas on mainframe (including online transaction processing, batch processing, and database process ing). It also realizes substantial reductions in the turnaround time a nd response time, as well as to make extensive improvements in the thr oughput, scalability, and fault tolerant feature. This paper describes the structures and characteristics of parallel processing on online t ransaction processing (Parallel OLTP: Online Transaction Processing), batch processing (Parallel batch), and database processing (Parallel S QL: Structured Query Language).