Re: pg_dump problems: [archiver (db)] query failed: ERROR: relation "pg_opfamily" does not exist

On 8/20/19 7:12 PM, Erwin Moller wrote:
> Hi,
>
> While trying to move an old 8.1 Postgres install to a new server with postgres 10.10, I get an error, listed hereunder:
> I am trying to get a mydump_x_x_x.sql file to use to reinstall on the target machine.
>
> From my new machine I connect to my old machine like this:
> erwin(at)ubuntu:~$  pg_dump -f "/home/erwin/mydump_$(date +%d_%m_%Y).sql" -C -h somehost.com -p 5433 -U myvalidusername -d myremotedb
> Password:
> pg_dump: [archiver (db)] query failed: ERROR:  relation "pg_opfamily" does not exist
> pg_dump: [archiver (db)] query was: SELECT classid, objid, refclassid, refobjid, deptype FROM pg_depend WHERE deptype != 'p' AND deptype != 'e'
> UNION ALL
> SELECT 'pg_opfamily'::regclass AS classid, amopfamily AS objid, refclassid, refobjid, deptype FROM pg_depend d, pg_amop o WHERE deptype NOT IN ('p', 'e', 'i') AND classid = 'pg_amop'::regclass AND objid = o.oid AND NOT (refclassid = 'pg_opfamily'::regclass AND amopfamily = refobjid)
> UNION ALL
> SELECT 'pg_opfamily'::regclass AS classid, amprocfamily AS objid, refclassid, refobjid, deptype FROM pg_depend d, pg_amproc p WHERE deptype NOT IN ('p', 'e', 'i') AND classid = 'pg_amproc'::regclass AND objid = p.oid AND NOT (refclassid = 'pg_opfamily'::regclass AND amprocfamily = refobjid)
> ORDER BY 1,2
>
> And no archive is created.
>
> Does any of you kind people have advice? I am sure this worked on postgres9.

It looks like this was broken just before 10.10 was released, and has since been fixed;
see:

https://git.postgresql.org/gitweb/?p=postgresql.git;a=commitdiff;h=6844adba54f7d96f30f834efc6d9aa1e52e5672d

Your options are:
- find a 10.9 or earlier package and use the pg_dump from that
- build pg_dump yourself
- wait for 10.11 to come out (though I imagine that won't be for a month or two)

Regards

Ian Barwick

--
Ian Barwick https://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services