In a decent amount of cases this will kill the offending process taking up too much memory, and then your service manager (systemd etc) will restart it. If prob

In a decent amount of cases this will kill the offending process taking up too much memory, and then your service manager (systemd etc) will restart it. If problem was due to a memory leak etc this typically recovers the situation for a while. Of course the OOM killer might kill the wrong process, which can be annoying. This can be tweaked on a per process basis using /proc/$process/oom_score_adj or using OOMScoreAdjust in the systemd service file