Testing and Debugging Your Installation's ACS Routines

The DFSMS Automatic Class Selection (ACS) routines are a critical system component - they are executed every time a dataset is created, whether SMS-managed or not. Errors in ACS logic can lead to high-visibility failures. Yet often little testing is done when implementing an ACS routine change, and debugging of existing ACS code is difficult and often haphazard. This session will focus on the use of the ACS testing facilities available under ISMF and will provide tips and techniques for batch and interactive ACS testing and methods for debugging ACS logic.