Two-step batch mode restrictions

IMS HP Change Accumulation Utility is designed to run in multiple address spaces.

Specifying a VOLNUM parameter in the GENJCL input control statement causes a serialization of the change accumulation process when running the standard IMS change accumulation utility. This serialization is necessary if there is a large number of data sets and the number of device units is limited.

IMS HP Change Accumulation Utility resolves this issue by providing the INLIM parameter which restricts the number of log data sets being read in parallel to the number. The higher this number, the more you can achieve parallel processing.