"Euler Taveira de Oliveira" <eulerto(at)yahoo(dot)com(dot)br> writes:
> I just execute the same transaction in 2 different backends and I got the
> message: 'attempted to update invisible tuple'.
If you want this investigated then you'll need to provide a
self-contained example. We have other things to do than guess about
the contents of your database...
regards, tom lane