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> > We have found two things that appear to resolve the problem - > > * Using a more powerful EC2 instance. We can reproduce the issue with > a r7a.medium instance but not with a r7a.large EC2 instance. > * Changing the Postgres synchronous_commit parameter from "on" to > "off". We cannot reproduce the issue with synchronous_commit set to > "off".
What is running on the EC2 instance?:
1) The Postgres server.
2) The replication receiver.
3) Both.
> > We need help to understand this unexpected behaviour. > > We are using Postgres 14.10. > > Thanks, > Daniel McKenzie