Re: [EXT]: Re: BUG #18604: Regression in PostgreSQL 16.4: pg_dump Prevents Essential System Table Modifications

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От Basha
Тема Re: [EXT]: Re: BUG #18604: Regression in PostgreSQL 16.4: pg_dump Prevents Essential System Table Modifications
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Msg-id GV1P194MB2356082D55A66B1F659F1AA5D89F2@GV1P194MB2356.EURP194.PROD.OUTLOOK.COM
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Ответ на Re: [EXT]: Re: BUG #18604: Regression in PostgreSQL 16.4: pg_dump Prevents Essential System Table Modifications  (Christophe Pettus <xof@thebuild.com>)
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Thank you, will there be any possibility of introducing a more granular control over pg_dump in such cases? Which would really helpful.


Thank you, 
Basha
From: Christophe Pettus <xof@thebuild.com>
Sent: Saturday, September 7, 2024 1:29:52 AM
To: Basha <Basha@maxcontact.com>
Cc: PostgreSQL Bug List <pgsql-bugs@lists.postgresql.org>
Subject: Re: [EXT]: Re: BUG #18604: Regression in PostgreSQL 16.4: pg_dump Prevents Essential System Table Modifications
 


> On Sep 6, 2024, at 16:44, Basha <Basha@maxcontact.com> wrote:
> If shadowing system catalogs via views is not a recommended path, we would be grateful for guidance on alternative approaches to achieve the same result—restricting visibility of databases in a multi-tenant environment while maintaining essential operations like backups. Specifically, is there a supported way to enforce database isolation at the system catalog level, or is there a possibility of introducing a more granular control over pg_dump in such cases?

The closest analogy that I've seen in the field is what Heroku does (did?) for database-based multitenancy, which is to assign very random names to the databases, without revealing any client names or other human-readable data.  That the databases existed was still visible in pg_database, but it leaked no substantial information to users connected to other databases.

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