The DMXCACHE_MAX_MEMORY_MB statement enables PowerExchange data maps caching and configures the maximum size for the data maps cache in megabytes.
DM_SUBTASK, DMXCACHE_DELETEECSA, and DMXCACHE_MULTIPLEJOBS
variable, enter the maximum size for the data maps cache in megabytes. Valid values are from 0 through 4095. You must enter a value greater than 0 to enable data maps caching. If you accept the default value of 0, PowerExchange does not use data maps caching.
Default is 0.
Verify that the REGION size specified in the DTLLST step in the JCL is large enough to run the PowerExchange Listener job. For example, if you define DMXCACHE_MAX_MEMORY_MB=20, you might have to increase the REGION size by 20 MBs.
You cannot use data maps caching with IMS netport jobs.