Learn more about IMS High Performance Load for z/OS
What does IMS High Performance Load for z/OS do?
IMS™ High Performance Load for z/OS® consists of the IMS HP Load utility, the Physical Sequence Sort for Reload utility and the Bitmap Resetter utility. It also provides the Load application programming interface (Load API).
Supported database organizations
IMS HP Load provides a complete set of high performance reorganization reload procedures for these database organizations: 1) HDAM (Hierarchical Direct Access Method), 2) HIDAM (Hierarchical Indexed Direct Access Method), 3) HISAM (Hierarchical Indexed Sequential Access Method), 4) SHISAM (Simple Hierarchical Indexed Sequential Access Method), 5) PHDAM (Partitioned Hierarchical Direct Access Method) and 6) PHIDAM (Partitioned Hierarchical Indexed Direct Access Method).
IMS HP Load utility
IMS HP Load provides high performance reload processing for databases. The utility is a performance replacement of the IMS HD Reorganization Reload utility (DFSURGL0). The IMS HP Load utility supports various database organizations. It creates the indirect list data set (ILDS) of a HALDB that is compatible with the one created by IMS standard IMS HD Reorganization Reload utility. Also, the utility provides reports that contain statistics about space use and segment pointers.
IMS HP Load provides the Load application programming interface (Load API). By using the Load API, you can run the initial load process much faster than that of IMS DL/I.
Physical Sequence Sort for Reload
The utility sorts an unloaded database data set that is produced for an HDAM database to reduce the elapsed time required to reload the database. It also sorts an unloaded database data set for HDAM, PHDAM, HIDAM, PHIDAM, HISAM or SHISAM databases. The utility also provides reports, for use in the tuning analysis of the randomizing parameters.
The Bitmap Resetter utility can be used to adjust the bitmap of an HDAM, HIDAM, PHDAM or PHIDAM database to accommodate denser packing of the database blocks.