Re: Postgresql db crash and recovery mode - Mailing list pgsql-admin

=?UTF-8?B?TGF0aWYgZ8O8ZMO8aw==?= <latifguduk@gmail.com> writes:
> One of our production database crashed and got FATAL:  the database system
> is in recovery mode. You can find OS version and db version info below.

> 2021-10-05 17:01:08.103 +03     20248  LOG:  server process (PID 158856)
> was terminated by signal 9: Killed

That is an external kill.  If you didn't do it manually, it's most likely
the Linux OOM killer in action.  See

https://www.postgresql.org/docs/current/kernel-resources.html#LINUX-MEMORY-OVERCOMMIT

            regards, tom lane