Re: Terminating connection because of crash of another server process

On Fri, 2023-09-29 at 11:21 +0300, Deo Felix wrote:
> Please find the screenshot of  error from the log file  postgresqlerror.png

It is really amazing how much effort you make *not* to share
any relevant information with us.  But there is finally some
interesting message hidden in your image:

 server process (PID 14257) was terminated by signal 9: Killed

Since I don't expect that random users on your server machine
go around "kill -9"-ing PostgreSQL processes, it is very likely
that PostgreSQL is crashed by the Linux out-of-memory killer.

You should disable memory overcommit, see
https://www.postgresql.org/docs/current/kernel-resources.html#LINUX-MEMORY-OVERCOMMIT

Then you will start getting "out of memory" errors instead of
crashes.  To combat these, reduce the memory usage parameters,
mostly "work_mem", or reduce the number of active database sessions
by using a connection pool.

Yours,
Laurenz Albe