Upgrade And Implementation Of IBM Mainframe's Financial System

The mainframe's advantage is rest with its powerful processing ability, good security and high reliability. It shows its strong capability when processing complex multi-tasks, and its prolonged time is far less than any other types. Mainframe has strong I/O ability, excels in visiting super-type database. The strategy of using DPM(Dynamic Partition Management )can flexibly assign system resources by different size of the application , can prevent infecting from the base, can raise the security of the mainframe. The above features are used in Finance, Telecom, Traffic, Government and the other industries , the mainframe can not be replaced.Based on the expensive price and large system configuration, mainframe is rarely used in the company's financial system module, but because of IBM's security and the use of performance considerations, they decided to use IBM's own products (Z series host and OS/390 system). IBM'S Finance, accounting, import and export data, and other statements, are exceptionally huge, but the mainframe is precisely to our needs. It's RAS (Reliability, Availability, Serviceability), I/O processing power as well as the ISA is the best choice to deal with the huge data.This article has completed the IBM Mainframe (OS390) on MVS under the environment financial system's promotion work. First analyzes based on SLCM (software disposition and storehouse supervisor) language environment and the characteristic of OS PL/1 JCL (job control language), then has carried on the PL/1 development and the translation under the SCLM environment, then compiles the job control language (JCL) to apply the PL/1 development the procedure to carry on the test. Finally through this financial system's promotion, has rejected the unnecessary code, optimized the structure of the program, greatly enhanced the efficiency of the system.