OH2 stable just stopped working (events.log frozen)

[NCO (E. Gerland)]

In my case it was obviously related to OOM error (out of memory in Java).
Actually I have another thread with this topic:

Identifying problematic item (out of Memory / Java heap)

by the way - can I use both? The option above to dump the OOM and the expanded memory? like this? EXTRA_JAVA_OPTS="-XX:+HeapDumpOnOutOfMemoryError -Xms400m -Xmx650m"

What helped me finally was expanding the memory on my raspberry pi 3:
EXTRA_JAVA_OPTS="-Xms400m -Xmx650m"
in /etc/default/openhab2