Hiperbatch is a VSAM extension designed to improve performance in specific situations. It uses the data lookaside facility (DLF) services in MVS to provide an alternate fast path method of making data available to many batch jobs. Through Hiperbatch, applications can take advantage of the performance benefits of MVS without changing existing application programs or the JCL used to run them. For more information about using Hiperbatch, see MVS Hiperbatch Guide.