There is a Repeat Notification option on OEM Grid, which can be useful on monitoring.
It will ensure that alerts are not missed. Since by design OEM Grid will notify only once.
OEM Grid will not page again on the threshold until it goes under the threshold and then exceeds it again.
What it serves:
When a metric or availability alert is neither acknowledged nor cleared it will keep notify 3 more times in frequency of four hours.
It can be seen at the Setup –> Notification Methods.
