sireesha <sireesha(dot)padmini(at)gmail(dot)com> writes:
> We recently upgraded our production databases to 14 and we have encountered
> Mutex 22 error and Postgres defunct processes in 2 of the databases.
There is no part of Postgres that would produce a message like "Mutex 22
error". You need to spend a bit more effort on identifying where your
problem is coming from. If it does seem to be coming from Postgres,
you need to spend a lot more effort on providing a useful trouble report
if you want any help from the mailing lists. Please see
https://wiki.postgresql.org/wiki/Guide_to_reporting_problems
regards, tom lane