On 7/29/20 6:38 AM, Zwettler Markus (OIZ) wrote:
I cannot use pg_restore v9.6 on a pg_dump v12 because otherwise: pg_restore: 
[archiver] unsupported version (1.14) in file header

The external supplier did PG v9.5 database + pg_dump v12.
I would have to do pg_restore v12 (as of pg_dump v12) into my PG v9.6.
The version chain would be PG v9.5 => pg_dump v12 => pg_restore v12 => PG v9.6.

That's why my question has been: would the whole chain work and is it supported?

That is one way of attempting it, though it is not supported. You could also try pg_restore v12 on pg_dump file v9.6 to Postgres v9.6 database as well. With the caveats that I quoted in my previous post. Ideally you would have the supplier redo the dump of the database with a 9.6 version of pg_dump.




-----Ursprüngliche Nachricht-----
Von: Bruce Momjian <br...@momjian.us>
Gesendet: Mittwoch, 29. Juli 2020 14:55
An: Zwettler Markus (OIZ) <markus.zwett...@zuerich.ch>
Cc: pgsql-general <pgsql-general@lists.postgresql.org>
Betreff: Re: pg_dump / pg_restore version confusion

On Wed, Jul 29, 2020 at 12:33:56PM +0000, Zwettler Markus (OIZ) wrote:
And I can also do this restore:

<quote>
Would a pg_restore with a v12 client into a postgres v9.6 database work and be
officially supported?
</quote>

Uh, good question.  You should still use the version of pg_restore that you are
loading _into_, not what you dumped from.

--
   Bruce Momjian  <br...@momjian.us>        https://momjian.us
   EnterpriseDB                             https://enterprisedb.com

   The usefulness of a cup is in its emptiness, Bruce Lee





--
Adrian Klaver
adrian.kla...@aklaver.com


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