IMS High Performance Load

The IMS™ HP Load utility replaces the IMS HD Reorganization Reload utility (DFSURGL0) to reload IMS full-function databases by using high-performance methods. The utility also analyzes database performance and prepares reports that contain statistics about space use and segment pointers.

Reloading IMS databases with IMS High Performance Load
The IMS HP Load utility is a performance replacement of the basic IMS HD Reorganization Reload utility (DFSURGL0). It reloads IMS HDAM, HIDAM, HISAM, SHISAM, PHDAM, and PHIDAM databases by using high-performance methods. It also analyzes database performance and prepares reports that contain statistics about space use and segment pointers.
Reorganizing a HALDB database
To reorganize a HALDB database, you must run several programs. Reorganizing a HALDB database, however, is simpler than reorganizing a non-HALDB database because neither complicated job steps for logical relationships nor secondary indexes are required for a HALDB database.
Reloading user-defined header format records
You can reload database records from an unloaded file that has user-defined header format.
Reloading a corrupted database
You can use IMS High Performance Unload and IMS High Performance Load to unload and reload only the correct segments from a corrupted database.
User exit interface
By providing a user exit routine, you can perform additional processing or editing of segments during the database reload process.
Examples
The following examples present typical effective uses of IMS HP Load.