When you enable data maps caching, PowerExchange retrieves data maps from

job-level

memory rather than by accessing the data maps file. By eliminating accesses to the data maps file, data maps caching improves performance.

When you enable data maps caching, you can decrease initialization time by 0.1 second in addition to the performance improvements that you achieve through connection pooling. For more information about connection pooling, see the

PowerExchange Bulk Data Movement Guide

.

Data maps caching can be useful when many short transactions are completed for each second. However, if you run long-running bulk data movement sessions and initialization time is a small part of the overall processing time, data maps caching might not give you any performance benefits.

To enable and configure data maps caching, define DBMOVER statements on the system where the PowerExchange Listener or netport jobs run. You can configure PowerExchange to run data maps caching in either

single-job

mode or

multiple-jobs

mode.