=?UTF-8?Q?Hannes_K=c3=bchtreiber?= <h(dot)kuehtreiber(at)synedra(dot)com> writes:
> Hello Tom, thanks for your answer!
> We found out because we are monitoring long running queries, and saw it
> had been running for a month before the restart yesterday.
> I just queried pg_stat_activity and it seems to be running since then.
Oh, that's because pg_stat_activity continues to show the last plain-SQL
query executed by the session.
I think we recently changed things so that replication commands
would be shown in pg_stat_activity too, but evidently you're running
a version older than that.
regards, tom lane