Quality assurance for online and batch systems

The issue of quality assurance for mainframe online and batch systems involves a series of different technically motivated activities of varying complexity that are all aimed at ensuring operational reliability and improving performance. The problems are rectified either automatically or manually. Automatic correction is useful for difficulties that occur in many programs with a certain frequency, e.g. software features that are no longer supported. Perl scripts play a significant role in the automated analysis and problem elimination. By contrast, manual fault correction can be used for problems that occur in few modules and that require more complex program adjustments or even new implementation. In batch processing, quality assurance also involves job streams in addition to the P?L1 programs.