Restrictions

IMS™ HP Load performs the same functions as the IMS HD Reorganization Reload utility, with certain restrictions.

The following restrictions apply to the IMS HP Load utility:

• HDAM DBDs must specify a nonzero maximum relative block number in the RMNAME operand of the DBD macro because it formats the entire root addressable area.
• IMS HP Load does not run under the Utility Control Facility (UCF). Checkpoint and restart of the reload process under the UCF are not supported.
• Because of the difference between the free space search algorithms of the IMS HD Reorganization Reload utility and of IMS HP Load, the latter might use more DASD.
• If you want to change partition boundaries during the reorganization of a HALDB, you must sort the unloaded records by specifying the SORT=YES statement in the FRRIN data set.
• If the access method used is VSAM, the total record number in the catalog information is cleared. But if you did not receive any warning or error message from IMS HP Load, all records are reloaded into the target database data sets.
• If the randomizer or its parameter is changed between unload and reload processes, you must sort the unload records by specifying the SORT=YES statement in the FRRIN data set.