How to set up postgresql for stable operation?

Question

PostgreSQL

What is the point:
There is a conditional web service whose server is running on Tomcat, postgresql is used as a database service. And the following situation occurs: in the region of 100 logging, the service starts sending errors of the type - SQLException, HibernateException.
After restarting tomcat everything is back to normal.
The Max_connections parameter is set to 9999
I can't figure out what the problem is (

Answer 1

Judging by your brief explanation, the problem is most likely in the application, and not in the database. Although I would also pay attention to the postgres settings. There is nothing to talk about without logs.

Answer 2

And you can find out where the "100 logging" area is located?