Use the F OMVS,SHUTDOWN operator command when you want to do a planned shutdown, and might or might not be reIPLing the system. You will be shutting down the entire z/OS UNIX system and all processes.

Only eligible running processes are shut down. Some processes might not be shut down because they have registered as a permanent process. Additionally, some applications might register to block a shutdown, which delays the shutdown request until the blockers end or unblock. Also, an application exit can be set up to be given control when a shutdown request is initiated in order to allow specific shutdown actions to be taken. This might include initiating the shutdown of the application or sending messages that indicate the specific steps that are required to shut down the application.

If any blocking jobs or processes are active when a shutdown request is initiated, the shutdown is delayed until all blocking jobs or processes either unblock or end. If the delay exceeds a certain time interval, you will receive messages telling you that the shutdown is delayed and which jobs are delaying the shutdown. At this point, you can either attempt to end the jobs that are identified as blocking shutdown or issue F OMVS,RESTART to restart the z/OS UNIX environment, which will cause the shutdown request to be ended.