HALDB selective partition processing

You can restrict BMP, JBP, and batch application programs to a single HALDB partition or a subset of HALDB partitions.

Restricting an application program to a subset of partitions allows multiple instances of the application program to process HALDB partitions in parallel, independently from the other application programs. The independent processing of partitions by application programs is similar to the independent processing of partitions by utilities.

To restrict processing to a subset of partitions, restrict the database PCB to the partition by specifying in a DFSHALDB DD statement the partition name and either the label name of the database PCB or the nth position of the database PCB.

For more information about the DFSHALDB DD statement, see IMS Version 15.4 System Definition.