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Message-ID: <f56c7492-5851-41fc-89fd-94e099f6ed16@aklaver.com>
Date: Fri, 11 Apr 2025 23:00:37 -0700
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Subject: Re: To take backup of Postgresql Database without large objects
To: "sivapostgres@yahoo.com" <sivapostgres@yahoo.com>,
 Pgsql-general <pgsql-general@postgresql.org>
References: <1477036526.178965.1744376140698.ref@mail.yahoo.com>
 <1477036526.178965.1744376140698@mail.yahoo.com>
 <40a86c92-5fc9-447d-969e-2a61cc98629c@aklaver.com>
 <1494046583.828048.1744434369825@mail.yahoo.com>
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From: Adrian Klaver <adrian.klaver@aklaver.com>
In-Reply-To: <1494046583.828048.1744434369825@mail.yahoo.com>
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On 4/11/25 22:06, sivapostgres@yahoo.com wrote:

> Either my command should be wrong or I'm missing something.

This was explained in my post as  quoted below.

> 
> Happiness Always
> BKR Sivaprakash
> 
> On Friday 11 April, 2025 at 08:31:31 pm IST, Adrian Klaver 
> <adrian.klaver@aklaver.com> wrote:
> 
> 
> On 4/11/25 05:55, sivapostgres@yahoo.com <mailto:sivapostgres@yahoo.com> 
> wrote:
>  > Hello,
>  >
>  > Using PostgreSQL 15.1, compiled by Visual C++ build 1914, 64-bit in
>  > Windows 10.
>  >
>  > Trying to take backup of a database, using pg_dump, where one table
>  > contains bytea datatype, which I don't want to include in the backup.
>  >
>  > My command was:
>  > "E:\DBBackup\bin\pg_dump.exe"  -h 192.168.1.1 -p 5432 -U <username>
>  > --no-blobs -F c -v -f "E:\DBBackup\demo6_110420251637.bak" demo6
>  >
>  > the backup includes the bytea field also.
>  >
>  > I tried with
>  > "E:\DBBackup\bin\pg_dump.exe"  -h 192.168.1.1 -p 5432 -U <username> -B
>  > -F c -v -f "E:\DBBackup\demo6_110420251637.bak" demo6
>  >
>  > also, which also included the bytea field.
> 
> 1) Short version
> 
> Short version bytea fields != large objects.
> 
> 2) Long version
> 
>  From here:
> 
> https://www.postgresql.org/docs/current/app-pgdump.html 
> <https://www.postgresql.org/docs/current/app-pgdump.html>
> 
> -B
> --no-large-objects
> --no-blobs (deprecated)
> 
>      Exclude large objects in the dump.
> 
>      When both -b and -B are given, the behavior is to output large
> objects, when data is being dumped, see the -b documentation.
> 
> Where large objects are defined here:
> 
> https://www.postgresql.org/docs/current/largeobjects.html 
> <https://www.postgresql.org/docs/current/largeobjects.html>
> 
> 
> 
> 
> 
>  >
>  > What wrong I'm doing?  Couldn't figure it out.   Any help is appreciated.
>  >
>  > Happiness Always
>  > BKR Sivaprakash
> 
>  >
> 
> -- 
> Adrian Klaver
> adrian.klaver@aklaver.com <mailto:adrian.klaver@aklaver.com>
> 
> 
> 
> 

-- 
Adrian Klaver
adrian.klaver@aklaver.com