Actions to reconfigure a central processor offline

  1. Enter a CONFIG CPU(x),OFFLINE command on a console with master authority. The system responds on the console on which the command was entered.
    The operating system rejects a CONFIG CPU(x),OFFLINE command when:
    • The target processor is the only online processor.
    • The target processor is the only processor with an operative timer.
    • Alternate CPU recovery (ACR) occurs during OFFLINE processing.
    • Any active jobs have processor (CPU) affinity with the target processor.
  2. If you enter a CONFIG command for a central processor and currently scheduled jobs have CPU affinity for that processor, the system issues message IEE718I to list the jobs. Do the following:
    1. Prevent the operating system from scheduling any additional jobs, by replying YES to message IEE718D.
    2. Either wait for the active jobs to complete or cancel them.

      Note that replying YES to message IEE718D leaves the target central processor unavailable for affinity job scheduling. If you want to restore the central processor to its original state, enter CONFIG CPU(x),ONLINE to restore the original central processor status and make the target central processor available for affinity job scheduling.

    3. Reenter the CONFIG CPU(x),OFFLINE command.
Parent topic: Reconfiguring a central processor