Recovery actions for a lack of console activity

A lack of console activity can be no messages appearing on the console or no response by the system to commands. Causes can be simply a low level of system activity or a problem in message processing in the operating system.

  1. If a full-capability console appears inactive, check the system response by requesting a display of the time. Enter a DISPLAY T command.

    The system should respond within a few seconds with the time and date.

  2. Take the console out of hold mode (see Temporarily suspending the screen roll for more details).
  3. If it does not, enter a CONTROL C,D command to cancel any status displays being presented on the unresponsive console.

    The console should return to normal activity.

  4. If it does not, assume the console has some other problem. Do the following:
    1. Enter a CONTROL Q command to delete messages that are queued to the console, but have not yet been displayed. These messages have already been through hardcopy processing.
    2. Check for a console hardware error.
    3. If possible, bring up another console and enter a RESET CN command for the unresponsive console.
    4. Notify the system programmer.
    5. If necessary, reIPL the system, following normal procedures.