Modify the CPF programmatically (change settings such as memory and journal settings, define mappings, configure devices, and so on).
The CPF (Configuration Parameter File) contains a set of parameters that affect how InterSystems IRIS® operates. InterSystems IRIS reads this file for configuration settings when it starts up. For more information, see Introduction to the Configuration Parameter File.
The CPF can be modified programmatically through the configuration merge feature and a number of classes. Most individual settings can also be modified using the Management Portal.