We noticed for all the devices the polling got stopped at one particular time and when we noticed further we realized that "node poll" object in the polling engine has stopped at particular time. Post checking we did database sync check and checked the polling engine health status. Everything looked to be fine. We restarted finally and we were able to see devices getting in sync with the current time, First of all when the polling stopped we should have been alerted or notified which we didnt got. To avoid this in future we are planning to set a alert monitoring in solarwinds which should notify us if any service is in hung status or not working . Also we may need an alert to be notified if the parameter " node poll" is not in sync with the existing time. Any idea or suggestions to achieve this ?