IEFU84 Exit

The extended agent for z/OS tracks job streams using the IEFU84 exit. This exit must be turned on in the SMF parm member in SYS1.PARMLIB. The EEWSPACE job dynamically chains to the IEFU84 exit. If the IEFU84 exit is currently being used, EEWSPACE will “front-end” the IEFU84 exit, obtain the information it requires, and then branch to the existing user exit. When EEWSPACE is stopped, it removes itself from the chain and restores the chain to its original status. It is important to note that EEWSPACE has no effect on any existing IEFU84 exits, which continue to run normally.