On Mon, 6 Apr 2020 at 23:32, freebsdjlu <freebsd...@gmail.com> wrote: > > Hi > I also met the same issue : > WAL stream: ERROR: option "proto_version" = "1" is unknown > > do you know what is the root cause ? >
It's usually a good idea to provide reproducible steps along with the error you're having. I suspect the error message came from contrib/test_decoding, and 'proto_version' option is used when starting logical replication. So as far as I can imagine from the error message, I think that a server attempted to start logical replication using a replication slot that uses test_decoding rather than pgoutput. I suggest to check the decode plug-in of the replication slot on the provider server that is used for logical replication. Regards, -- Masahiko Sawada http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
