Odoo server liked many Linux systems and applications they are very stable and even never die. Some can even restart itself after death.

However, there are still cases applications will die. It is worth exploring the issue, in particular the same case happen quite steadily.

I came across one of such issues for Odoo server that supposed to be very stable and it is also required to be stable as it is an enterprise level application for critical business operation.

I followed the lines of whole solution architecture from nginx, odoo, postgresql, python and ubuntu to the find out where the line is broken.

I found the issue of “PoolError: The Connection Pool Is Full”. This is obviously an issue though not sure if it the culprit of the server down. However, there is no harm to have this ugly message eliminated.

Source: “PoolError: The Connection Pool Is Full” with 100 users | Odoo