Re: pg_dump of database with numerous objects

From: Christophe Pettus <xof(at)thebuild(dot)com>
To: tony(at)exquisiteimages(dot)com
Cc: pgsql-general(at)lists(dot)postgresql(dot)org
Subject: Re: pg_dump of database with numerous objects
Date: 2020-05-31 20:13:57
Message-ID: B7B953F4-9CAF-46C1-80FF-C8C2BF4CD59B@thebuild.com
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> On May 31, 2020, at 13:10, tony(at)exquisiteimages(dot)com wrote:
>
> On 2020-05-31 13:08, Christophe Pettus wrote:
>>> On May 31, 2020, at 08:05, tony(at)exquisiteimages(dot)com wrote:
>>> My pg_class table contains 9,000,000 entries and I have 9004 schema.
>> Which version of pg_dump are you running? Older versions (don't have
>> the precise major version in front of me) have N^2 behavior on the
>> number of database objects being dumped.
>
> I am upgrading from 9.3

To which version? You might try the dump with the version of pg_dump corresponding to the PostgreSQL version you are upgrading *to* (which is recommended practice, anyway) to see if that improves matters.

--
-- Christophe Pettus
xof(at)thebuild(dot)com

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