Re: Upgrade from 8.4 to 9.4.1

Hi,

My guess you read two different sources with different aspects of the topic.
Of course you can use the new version's pg_dump only if you have both
versions.
I have used the 8.4's pg_dump with the 9.3's pg_restore without any
problem, though.
However, keep in mind there could be difference between major versions,
which
could affect your application.

Regards,
Sándor Daku

On 20 February 2015 at 20:20, John Gage <jsmgage(at)gmail(dot)com> wrote:

> I am using a Mac with the latest operating system Yosemite.
>
> The upgrade instructions I have found in the archive confuse me in one way:
>
> I would like to upgrade to Postgres.App. In their instructions they say,
>
> "For best results, you should remove any existing installation of
> PostgreSQL. Here's a run-down of the most common ways you may have
> installed it previously:"
>
> However, in the instructions on this list, it is recommended (strongly) to
> use the pg_dump contained in the version you wish to upgrade to to transfer
> your tables.
>
> I do not understand how I can remove the existing installation with the
> mission-critical data it contains and use pg_dump from the new version to
> access that data.
>
> I know I am missing something. Please tell me what.
>
> Thank you very much,
>
> John Gage
>