Wait State

The condition of a task when it is waiting for an event (such as an I/O operation) to occur, meaning it is not currently a candidate to receive control of the processor. **z/OS Dispatcher** The system component responsible for scheduling address spaces as dispatchable units (Service Request Blocks or tasks) to run on a central processor (CP). **z/OS router** The component that processes all System Authorization Facility (SAF) calls, which first calls an optional installation exit routine and then calls the external security manager (like RACF).