Tips for reorganizing partitions individually

If you choose to reorganize the partitions individually, you can achieve a degree of parallelism in your reorganization process because all of the partition reorganization jobs can run simultaneously. You can reduce the overall reorganization time by running your jobs simultaneously.

In this case, however, you cannot use the partition initialization function during the reload processing that is done by IMS HP Load because other partitions might be being reorganized simultaneously. You need to initialize the partition before the reload processing, and specify PARTINIT=NO in each IMS HP Load job. For the partition initialization processing, you can use IMS HP Load job by specifying a dummy DFSUINPT DD in place of the IMS Database Prereorganization utility (DFSURPR0).