A system for modifying job control language (JCL) parameters optimizes data storage allocations for datasets by collecting historical data concerning actual data storage space requirements and use patterns for each dataset. JCL statements are parsed to find references to datasets and their requested...http://www.google.com.tw/patents/US6131190?utm_source=gb-gplus-share專利 US6131190 - System for modifying JCL parameters to optimize data storage allocations