>>> Am I to gather that there are possible incompatibilities? >> >> Definitely.
> In that case, it might be an idea to clarify that on the documentation. I > couldn't find this information.
If it were true, it would be in the documentation.
The reason for suggesting that you use the newer pg_dump during a version upgrade is that the newer version might have bug fixes that your current version lacks. In the absence of bugs, however, pg_restore is supposed to read dump files produced by older versions of pg_dump. If it fails to, that in itself is a filable bug.
regards, tom lane
Ah, I see. Thanks. Well I think that information would still be useful in the docs.