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Pg_dump
18+ messages / 11 participants
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* Pg_dump
@ 2023-12-07 18:11 Rajesh Kumar <[email protected]>
  2023-12-07 18:13 ` Re: Pg_dump Holger Jakobs <[email protected]>
  2024-08-19 15:26 ` ERROR: multixact "members" limit exceeded Dirk Krautschick <[email protected]>
  0 siblings, 2 replies; 18+ messages in thread

From: Rajesh Kumar @ 2023-12-07 18:11 UTC (permalink / raw)
  To: Pgsql-admin <[email protected]>

Hi

Will pg_dump cause blocking queries? If so how to take dump without
blocking?


^ permalink  raw  reply  [nested|flat] 18+ messages in thread

* Re: Pg_dump
  2023-12-07 18:11 Pg_dump Rajesh Kumar <[email protected]>
@ 2023-12-07 18:13 ` Holger Jakobs <[email protected]>
  2023-12-07 18:26   ` Re: Pg_dump Scott Ribe <[email protected]>
  2023-12-07 18:52   ` Re: Pg_dump Tom Lane <[email protected]>
  1 sibling, 2 replies; 18+ messages in thread

From: Holger Jakobs @ 2023-12-07 18:13 UTC (permalink / raw)
  To: [email protected]; +Cc: [email protected]

Am 07.12.23 um 19:11 schrieb Rajesh Kumar:
> Hi
>
> Will pg_dump cause blocking queries? If so how to take dump without 
> blocking?


Readers don't block writers, writers don't block readers in PostgreSQL.

pg_dump is a reader.

-- 
Holger Jakobs, Bergisch Gladbach, Tel. +49-178-9759012



Attachments:

  [application/pgp-signature] OpenPGP_signature (203B, 2-OpenPGP_signature)
  download

^ permalink  raw  reply  [nested|flat] 18+ messages in thread

* Re: Pg_dump
  2023-12-07 18:11 Pg_dump Rajesh Kumar <[email protected]>
  2023-12-07 18:13 ` Re: Pg_dump Holger Jakobs <[email protected]>
@ 2023-12-07 18:26   ` Scott Ribe <[email protected]>
  2023-12-07 18:39     ` Re: Pg_dump jason cable <[email protected]>
  1 sibling, 1 reply; 18+ messages in thread

From: Scott Ribe @ 2023-12-07 18:26 UTC (permalink / raw)
  To: Rajesh Kumar <[email protected]>; +Cc: Pgsql-admin <[email protected]>

> Readers don't block writers, writers don't block readers in PostgreSQL.
> 
> pg_dump is a reader.
> 
> -- 
> Holger Jakobs, Bergisch Gladbach, Tel. +49-178-9759012

Additionally, I've done some stress testing and found that pg_dump puts surprisingly low load on our dbs. Of course, like everything else, this dependent on your specifics--after all the dump will require reading all rows, so for instance if you're disk-bound, you could see a performance hit. But generally, if your db is running in a reasonably "healthy" performance range and not already close to limits, pg_dump won't have a performance impact visible to users.






^ permalink  raw  reply  [nested|flat] 18+ messages in thread

* Re: Pg_dump
  2023-12-07 18:11 Pg_dump Rajesh Kumar <[email protected]>
  2023-12-07 18:13 ` Re: Pg_dump Holger Jakobs <[email protected]>
  2023-12-07 18:26   ` Re: Pg_dump Scott Ribe <[email protected]>
@ 2023-12-07 18:39     ` jason cable <[email protected]>
  0 siblings, 0 replies; 18+ messages in thread

From: jason cable @ 2023-12-07 18:39 UTC (permalink / raw)
  To: Scott Ribe <[email protected]>; Rajesh Kumar <[email protected]>; +Cc: Pgsql-admin <[email protected]>

That happens to me too the last time I took dump

Get Outlook for Android<https://aka.ms/AAb9ysg;
________________________________
From: Scott Ribe <[email protected]>
Sent: Thursday, December 7, 2023 10:26:15 AM
To: Rajesh Kumar <[email protected]>
Cc: Pgsql-admin <[email protected]>
Subject: Re: Pg_dump

> Readers don't block writers, writers don't block readers in PostgreSQL.
>
> pg_dump is a reader.
>
> --
> Holger Jakobs, Bergisch Gladbach, Tel. +49-178-9759012

Additionally, I've done some stress testing and found that pg_dump puts surprisingly low load on our dbs. Of course, like everything else, this dependent on your specifics--after all the dump will require reading all rows, so for instance if you're disk-bound, you could see a performance hit. But generally, if your db is running in a reasonably "healthy" performance range and not already close to limits, pg_dump won't have a performance impact visible to users.





^ permalink  raw  reply  [nested|flat] 18+ messages in thread

* Re: Pg_dump
  2023-12-07 18:11 Pg_dump Rajesh Kumar <[email protected]>
  2023-12-07 18:13 ` Re: Pg_dump Holger Jakobs <[email protected]>
@ 2023-12-07 18:52   ` Tom Lane <[email protected]>
  2023-12-07 19:00     ` Re: Pg_dump M Sarwar <[email protected]>
  1 sibling, 1 reply; 18+ messages in thread

From: Tom Lane @ 2023-12-07 18:52 UTC (permalink / raw)
  To: Holger Jakobs <[email protected]>; +Cc: [email protected]; [email protected]

Holger Jakobs <[email protected]> writes:
> Am 07.12.23 um 19:11 schrieb Rajesh Kumar:
>> Will pg_dump cause blocking queries? If so how to take dump without 
>> blocking?

> Readers don't block writers, writers don't block readers in PostgreSQL.
> pg_dump is a reader.

To enlarge on that a bit: pg_dump takes AccessShareLock on every
table it intends to dump.  This does not conflict with ordinary
DML updates.  It *will* conflict with anything that wants
AccessExclusiveLock, which typically is schema-altering DDL.
See

https://www.postgresql.org/docs/current/explicit-locking.html#LOCKING-TABLES

So the answer to your question is "don't try to alter the
database schema while pg_dump is running".  You can alter
database content freely, though.

			regards, tom lane





^ permalink  raw  reply  [nested|flat] 18+ messages in thread

* Re: Pg_dump
  2023-12-07 18:11 Pg_dump Rajesh Kumar <[email protected]>
  2023-12-07 18:13 ` Re: Pg_dump Holger Jakobs <[email protected]>
  2023-12-07 18:52   ` Re: Pg_dump Tom Lane <[email protected]>
@ 2023-12-07 19:00     ` M Sarwar <[email protected]>
  2023-12-07 19:39       ` Re: Pg_dump Alvaro Herrera <[email protected]>
  0 siblings, 1 reply; 18+ messages in thread

From: M Sarwar @ 2023-12-07 19:00 UTC (permalink / raw)
  To: Tom Lane <[email protected]>; Holger Jakobs <[email protected]>; +Cc: [email protected] <[email protected]>; [email protected] <[email protected]>

I agree with Tom. This is making the difference. I ran into this scenario several times in the past.
But whole database is becoming slow when the dump is happening .
Thanks,
Sarwar

________________________________
From: Tom Lane <[email protected]>
Sent: Thursday, December 7, 2023 1:52 PM
To: Holger Jakobs <[email protected]>
Cc: [email protected] <[email protected]>; [email protected] <[email protected]>
Subject: Re: Pg_dump

Holger Jakobs <[email protected]> writes:
> Am 07.12.23 um 19:11 schrieb Rajesh Kumar:
>> Will pg_dump cause blocking queries? If so how to take dump without
>> blocking?

> Readers don't block writers, writers don't block readers in PostgreSQL.
> pg_dump is a reader.

To enlarge on that a bit: pg_dump takes AccessShareLock on every
table it intends to dump.  This does not conflict with ordinary
DML updates.  It *will* conflict with anything that wants
AccessExclusiveLock, which typically is schema-altering DDL.
See

https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.postgresql.org%2Fdocs%2Fcurrent...;

So the answer to your question is "don't try to alter the
database schema while pg_dump is running".  You can alter
database content freely, though.

                        regards, tom lane




^ permalink  raw  reply  [nested|flat] 18+ messages in thread

* Re: Pg_dump
  2023-12-07 18:11 Pg_dump Rajesh Kumar <[email protected]>
  2023-12-07 18:13 ` Re: Pg_dump Holger Jakobs <[email protected]>
  2023-12-07 18:52   ` Re: Pg_dump Tom Lane <[email protected]>
  2023-12-07 19:00     ` Re: Pg_dump M Sarwar <[email protected]>
@ 2023-12-07 19:39       ` Alvaro Herrera <[email protected]>
  0 siblings, 0 replies; 18+ messages in thread

From: Alvaro Herrera @ 2023-12-07 19:39 UTC (permalink / raw)
  To: M Sarwar <[email protected]>; +Cc: Tom Lane <[email protected]>; Holger Jakobs <[email protected]>; [email protected] <[email protected]>; [email protected] <[email protected]>

On 2023-Dec-07, M Sarwar wrote:

> I agree with Tom. This is making the difference. I ran into this scenario several times in the past.
> But whole database is becoming slow when the dump is happening .

For large databases with very high rate of updates, a running pg_dump
can prevent vacuum from removing old versions of rows.  This can make
the operations slower because of accumulation of bloat.

For such situations, pg_dump is not really recommended.  It's better to
use a physical backup (say, pgbarman), or if you really need a pg_dump
output file for some reason, create a replica (with _no_
hot_standby_feedback) and run pg_dump there.

-- 
Álvaro Herrera         PostgreSQL Developer  —  https://www.EnterpriseDB.com/
"I'm always right, but sometimes I'm more right than other times."
                                                  (Linus Torvalds)
https://lore.kernel.org/git/[email protected]/





^ permalink  raw  reply  [nested|flat] 18+ messages in thread

* ERROR: multixact "members" limit exceeded
  2023-12-07 18:11 Pg_dump Rajesh Kumar <[email protected]>
@ 2024-08-19 15:26 ` Dirk Krautschick <[email protected]>
  1 sibling, 0 replies; 18+ messages in thread

From: Dirk Krautschick @ 2024-08-19 15:26 UTC (permalink / raw)
  To: [email protected]

Hi,

a customer gets lots of

ERROR: multixact "members" limit exceeded

So they are running a vacuum now....but it seems that the error still
persists
even if the related table is already finish with vacuum.

Is there any possiblilty that a vacuum run won't solve those errors.

Thanks

Dirk






^ permalink  raw  reply  [nested|flat] 18+ messages in thread

* pg_dump
@ 2024-08-12 19:09 Wasim Devale <[email protected]>
  2024-08-12 19:16 ` Re: pg_dump David G. Johnston <[email protected]>
  2024-08-12 19:18 ` Re: pg_dump Holger Jakobs <[email protected]>
  0 siblings, 2 replies; 18+ messages in thread

From: Wasim Devale @ 2024-08-12 19:09 UTC (permalink / raw)
  To: Pgsql-admin <[email protected]>; pgsql-admin

Hi All

Please let me know if the below option persists while using pg_dump command:

-t table_name --exclude-column column_name

I have a table with a column having bytea data type (BLOBS). I just want to
exclude this in the dump file as it is of 99GB but I want the other data in
the same table which is of only 22MB.

Please let me know any work around this.

I used this option in pg_dump but that didn't work:

--exclude-table-data = table_name

PG version 12.19

Thanks,
Wasim


^ permalink  raw  reply  [nested|flat] 18+ messages in thread

* Re: pg_dump
  2024-08-12 19:09 pg_dump Wasim Devale <[email protected]>
@ 2024-08-12 19:16 ` David G. Johnston <[email protected]>
  1 sibling, 0 replies; 18+ messages in thread

From: David G. Johnston @ 2024-08-12 19:16 UTC (permalink / raw)
  To: Wasim Devale <[email protected]>; +Cc: Pgsql-admin <[email protected]>; pgsql-admin

On Monday, August 12, 2024, Wasim Devale <[email protected]> wrote:
>
>
> Please let me know if the below option persists while using pg_dump
> command:
>
> -t table_name --exclude-column column_name
>

No, there is no option to dump a partial table, rows or columns.


>
> I just want to exclude this in the dump file as it is of 99GB but I want
> the other data in the same table which is of only 22MB.
>
> Please let me know any work around this.
>

Write your own copy command to export that table’s contents.  See the
—snapshot option.

David J.


^ permalink  raw  reply  [nested|flat] 18+ messages in thread

* Re: pg_dump
  2024-08-12 19:09 pg_dump Wasim Devale <[email protected]>
@ 2024-08-12 19:18 ` Holger Jakobs <[email protected]>
  2024-08-13 06:22   ` Re: pg_dump Wasim Devale <[email protected]>
  1 sibling, 1 reply; 18+ messages in thread

From: Holger Jakobs @ 2024-08-12 19:18 UTC (permalink / raw)
  To: [email protected]

Am 12.08.24 um 21:09 schrieb Wasim Devale:
> Hi All
>
> Please let me know if the below option persists while using pg_dump 
> command:
>
> -t table_name --exclude-column column_name
>
> I have a table with a column having bytea data type (BLOBS). I just 
> want to exclude this in the dump file as it is of 99GB but I want the 
> other data in the same table which is of only 22MB.
>
> Please let me know any work around this.
>
> I used this option in pg_dump but that didn't work:
>
> --exclude-table-data = table_name
>
> PG version 12.19
>
> Thanks,
> Wasim
No, pg_dump can only dump complete tables.

An alternative would be exporting the result of a select command via 
COPY or \copy to a file, which can easily be read again with COPY or \copy

COPY is an SQL command and has to be used by a superuser because it 
writes to (or reads from) a file on the server.
\copy is a psql command and thus can only be executed in psql (not any 
other client) and by any user, because it writes to (or reads from) a 
file on the client computer.

Kind Regards,

Holger

-- 

Holger Jakobs, Bergisch Gladbach



Attachments:

  [application/pgp-signature] OpenPGP_signature (203B, 2-OpenPGP_signature)
  download

^ permalink  raw  reply  [nested|flat] 18+ messages in thread

* Re: pg_dump
  2024-08-12 19:09 pg_dump Wasim Devale <[email protected]>
  2024-08-12 19:18 ` Re: pg_dump Holger Jakobs <[email protected]>
@ 2024-08-13 06:22   ` Wasim Devale <[email protected]>
  2024-08-13 06:22     ` Re: pg_dump Wasim Devale <[email protected]>
  2024-08-13 06:33     ` Re: pg_dump Tom Lane <[email protected]>
  0 siblings, 2 replies; 18+ messages in thread

From: Wasim Devale @ 2024-08-13 06:22 UTC (permalink / raw)
  To: Holger Jakobs <[email protected]>; +Cc: [email protected]

I did one thing, we can exclude the toast table in the pg_dump command that
has the BLOBS data for a particular table.

--exclude-table-data=pg_toast.pg_toast_10176226

Thanks,
Wasim

On Tue, 13 Aug, 2024, 12:48 am Holger Jakobs, <[email protected]> wrote:

> Am 12.08.24 um 21:09 schrieb Wasim Devale:
> > Hi All
> >
> > Please let me know if the below option persists while using pg_dump
> > command:
> >
> > -t table_name --exclude-column column_name
> >
> > I have a table with a column having bytea data type (BLOBS). I just
> > want to exclude this in the dump file as it is of 99GB but I want the
> > other data in the same table which is of only 22MB.
> >
> > Please let me know any work around this.
> >
> > I used this option in pg_dump but that didn't work:
> >
> > --exclude-table-data = table_name
> >
> > PG version 12.19
> >
> > Thanks,
> > Wasim
> No, pg_dump can only dump complete tables.
>
> An alternative would be exporting the result of a select command via
> COPY or \copy to a file, which can easily be read again with COPY or \copy
>
> COPY is an SQL command and has to be used by a superuser because it
> writes to (or reads from) a file on the server.
> \copy is a psql command and thus can only be executed in psql (not any
> other client) and by any user, because it writes to (or reads from) a
> file on the client computer.
>
> Kind Regards,
>
> Holger
>
> --
>
> Holger Jakobs, Bergisch Gladbach
>
>


^ permalink  raw  reply  [nested|flat] 18+ messages in thread

* Re: pg_dump
  2024-08-12 19:09 pg_dump Wasim Devale <[email protected]>
  2024-08-12 19:18 ` Re: pg_dump Holger Jakobs <[email protected]>
  2024-08-13 06:22   ` Re: pg_dump Wasim Devale <[email protected]>
@ 2024-08-13 06:22     ` Wasim Devale <[email protected]>
  1 sibling, 0 replies; 18+ messages in thread

From: Wasim Devale @ 2024-08-13 06:22 UTC (permalink / raw)
  To: Holger Jakobs <[email protected]>; +Cc: [email protected]

Please let me know your inputs.

On Tue, 13 Aug, 2024, 11:52 am Wasim Devale, <[email protected]> wrote:

> I did one thing, we can exclude the toast table in the pg_dump command
> that has the BLOBS data for a particular table.
>
> --exclude-table-data=pg_toast.pg_toast_10176226
>
> Thanks,
> Wasim
>
> On Tue, 13 Aug, 2024, 12:48 am Holger Jakobs, <[email protected]> wrote:
>
>> Am 12.08.24 um 21:09 schrieb Wasim Devale:
>> > Hi All
>> >
>> > Please let me know if the below option persists while using pg_dump
>> > command:
>> >
>> > -t table_name --exclude-column column_name
>> >
>> > I have a table with a column having bytea data type (BLOBS). I just
>> > want to exclude this in the dump file as it is of 99GB but I want the
>> > other data in the same table which is of only 22MB.
>> >
>> > Please let me know any work around this.
>> >
>> > I used this option in pg_dump but that didn't work:
>> >
>> > --exclude-table-data = table_name
>> >
>> > PG version 12.19
>> >
>> > Thanks,
>> > Wasim
>> No, pg_dump can only dump complete tables.
>>
>> An alternative would be exporting the result of a select command via
>> COPY or \copy to a file, which can easily be read again with COPY or \copy
>>
>> COPY is an SQL command and has to be used by a superuser because it
>> writes to (or reads from) a file on the server.
>> \copy is a psql command and thus can only be executed in psql (not any
>> other client) and by any user, because it writes to (or reads from) a
>> file on the client computer.
>>
>> Kind Regards,
>>
>> Holger
>>
>> --
>>
>> Holger Jakobs, Bergisch Gladbach
>>
>>


^ permalink  raw  reply  [nested|flat] 18+ messages in thread

* Re: pg_dump
  2024-08-12 19:09 pg_dump Wasim Devale <[email protected]>
  2024-08-12 19:18 ` Re: pg_dump Holger Jakobs <[email protected]>
  2024-08-13 06:22   ` Re: pg_dump Wasim Devale <[email protected]>
@ 2024-08-13 06:33     ` Tom Lane <[email protected]>
  2024-08-13 06:42       ` Re: pg_dump Wasim Devale <[email protected]>
  1 sibling, 1 reply; 18+ messages in thread

From: Tom Lane @ 2024-08-13 06:33 UTC (permalink / raw)
  To: Wasim Devale <[email protected]>; +Cc: Holger Jakobs <[email protected]>; [email protected]

Wasim Devale <[email protected]> writes:
> I did one thing, we can exclude the toast table in the pg_dump command that
> has the BLOBS data for a particular table.
> --exclude-table-data=pg_toast.pg_toast_10176226

Utterly pointless.  pg_dump does not dump toast tables as such;
it's only concerned with their parent "regular" tables.  It will
fetch data from the regular tables, and it's not concerned with
the server-side implementation detail that some of that data
might be coming out of a toast table.

			regards, tom lane





^ permalink  raw  reply  [nested|flat] 18+ messages in thread

* Re: pg_dump
  2024-08-12 19:09 pg_dump Wasim Devale <[email protected]>
  2024-08-12 19:18 ` Re: pg_dump Holger Jakobs <[email protected]>
  2024-08-13 06:22   ` Re: pg_dump Wasim Devale <[email protected]>
  2024-08-13 06:33     ` Re: pg_dump Tom Lane <[email protected]>
@ 2024-08-13 06:42       ` Wasim Devale <[email protected]>
  2024-08-13 12:04         ` Re: pg_dump Ron Johnson <[email protected]>
  2024-08-13 12:05         ` Re: pg_dump Ron Johnson <[email protected]>
  2024-08-13 12:35         ` Re: pg_dump David G. Johnston <[email protected]>
  0 siblings, 3 replies; 18+ messages in thread

From: Wasim Devale @ 2024-08-13 06:42 UTC (permalink / raw)
  To: Tom Lane <[email protected]>; +Cc: Holger Jakobs <[email protected]>; [email protected]

Then what might be the solution for it if I am only concerned about using
pg_dump

On Tue, 13 Aug, 2024, 12:03 pm Tom Lane, <[email protected]> wrote:

> Wasim Devale <[email protected]> writes:
> > I did one thing, we can exclude the toast table in the pg_dump command
> that
> > has the BLOBS data for a particular table.
> > --exclude-table-data=pg_toast.pg_toast_10176226
>
> Utterly pointless.  pg_dump does not dump toast tables as such;
> it's only concerned with their parent "regular" tables.  It will
> fetch data from the regular tables, and it's not concerned with
> the server-side implementation detail that some of that data
> might be coming out of a toast table.
>
>                         regards, tom lane
>


^ permalink  raw  reply  [nested|flat] 18+ messages in thread

* Re: pg_dump
  2024-08-12 19:09 pg_dump Wasim Devale <[email protected]>
  2024-08-12 19:18 ` Re: pg_dump Holger Jakobs <[email protected]>
  2024-08-13 06:22   ` Re: pg_dump Wasim Devale <[email protected]>
  2024-08-13 06:33     ` Re: pg_dump Tom Lane <[email protected]>
  2024-08-13 06:42       ` Re: pg_dump Wasim Devale <[email protected]>
@ 2024-08-13 12:04         ` Ron Johnson <[email protected]>
  2 siblings, 0 replies; 18+ messages in thread

From: Ron Johnson @ 2024-08-13 12:04 UTC (permalink / raw)
  To: Pgsql-admin <[email protected]>

"Free your mind, and *pg_dump* will follow."  Maybe *En Vogue*, but
probably not.

On Tue, Aug 13, 2024 at 2:43 AM Wasim Devale <[email protected]> wrote:

> Then what might be the solution for it if I am only concerned about using
> pg_dump
>
> On Tue, 13 Aug, 2024, 12:03 pm Tom Lane, <[email protected]> wrote:
>
>> Wasim Devale <[email protected]> writes:
>> > I did one thing, we can exclude the toast table in the pg_dump command
>> that
>> > has the BLOBS data for a particular table.
>> > --exclude-table-data=pg_toast.pg_toast_10176226
>>
>> Utterly pointless.  pg_dump does not dump toast tables as such;
>> it's only concerned with their parent "regular" tables.  It will
>> fetch data from the regular tables, and it's not concerned with
>> the server-side implementation detail that some of that data
>> might be coming out of a toast table.
>>
>>                         regards, tom lane
>>
>

-- 
Death to America, and butter sauce.
Iraq lobster!


^ permalink  raw  reply  [nested|flat] 18+ messages in thread

* Re: pg_dump
  2024-08-12 19:09 pg_dump Wasim Devale <[email protected]>
  2024-08-12 19:18 ` Re: pg_dump Holger Jakobs <[email protected]>
  2024-08-13 06:22   ` Re: pg_dump Wasim Devale <[email protected]>
  2024-08-13 06:33     ` Re: pg_dump Tom Lane <[email protected]>
  2024-08-13 06:42       ` Re: pg_dump Wasim Devale <[email protected]>
@ 2024-08-13 12:05         ` Ron Johnson <[email protected]>
  2 siblings, 0 replies; 18+ messages in thread

From: Ron Johnson @ 2024-08-13 12:05 UTC (permalink / raw)
  To: Pgsql-admin <[email protected]>

Oops... should have been "free your mind, and COPY will follow."

On Tue, Aug 13, 2024 at 2:43 AM Wasim Devale <[email protected]> wrote:

> Then what might be the solution for it if I am only concerned about using
> pg_dump
>
> On Tue, 13 Aug, 2024, 12:03 pm Tom Lane, <[email protected]> wrote:
>
>> Wasim Devale <[email protected]> writes:
>> > I did one thing, we can exclude the toast table in the pg_dump command
>> that
>> > has the BLOBS data for a particular table.
>> > --exclude-table-data=pg_toast.pg_toast_10176226
>>
>> Utterly pointless.  pg_dump does not dump toast tables as such;
>> it's only concerned with their parent "regular" tables.  It will
>> fetch data from the regular tables, and it's not concerned with
>> the server-side implementation detail that some of that data
>> might be coming out of a toast table.
>>
>>                         regards, tom lane
>>
>

-- 
Death to America, and butter sauce.
Iraq lobster!


^ permalink  raw  reply  [nested|flat] 18+ messages in thread

* Re: pg_dump
  2024-08-12 19:09 pg_dump Wasim Devale <[email protected]>
  2024-08-12 19:18 ` Re: pg_dump Holger Jakobs <[email protected]>
  2024-08-13 06:22   ` Re: pg_dump Wasim Devale <[email protected]>
  2024-08-13 06:33     ` Re: pg_dump Tom Lane <[email protected]>
  2024-08-13 06:42       ` Re: pg_dump Wasim Devale <[email protected]>
@ 2024-08-13 12:35         ` David G. Johnston <[email protected]>
  2 siblings, 0 replies; 18+ messages in thread

From: David G. Johnston @ 2024-08-13 12:35 UTC (permalink / raw)
  To: Wasim Devale <[email protected]>; +Cc: Tom Lane <[email protected]>; Holger Jakobs <[email protected]>; [email protected] <[email protected]>

On Monday, August 12, 2024, Wasim Devale <[email protected]> wrote:

> Then what might be the solution for it if I am only concerned about using
> pg_dump
>

Create a new table to house the bytea data, copy the bytea data to it, drop
the bytea column from the existing table.

David J.


^ permalink  raw  reply  [nested|flat] 18+ messages in thread


end of thread, other threads:[~2024-08-19 15:26 UTC | newest]

Thread overview: 18+ messages (download: mbox mbox.gz follow: Atom feed)
-- links below jump to the message on this page --
2023-12-07 18:11 Pg_dump Rajesh Kumar <[email protected]>
2023-12-07 18:13 ` Holger Jakobs <[email protected]>
2023-12-07 18:26   ` Scott Ribe <[email protected]>
2023-12-07 18:39     ` jason cable <[email protected]>
2023-12-07 18:52   ` Tom Lane <[email protected]>
2023-12-07 19:00     ` M Sarwar <[email protected]>
2023-12-07 19:39       ` Alvaro Herrera <[email protected]>
2024-08-19 15:26 ` ERROR: multixact "members" limit exceeded Dirk Krautschick <[email protected]>
2024-08-12 19:09 pg_dump Wasim Devale <[email protected]>
2024-08-12 19:16 ` Re: pg_dump David G. Johnston <[email protected]>
2024-08-12 19:18 ` Re: pg_dump Holger Jakobs <[email protected]>
2024-08-13 06:22   ` Re: pg_dump Wasim Devale <[email protected]>
2024-08-13 06:22     ` Re: pg_dump Wasim Devale <[email protected]>
2024-08-13 06:33     ` Re: pg_dump Tom Lane <[email protected]>
2024-08-13 06:42       ` Re: pg_dump Wasim Devale <[email protected]>
2024-08-13 12:04         ` Re: pg_dump Ron Johnson <[email protected]>
2024-08-13 12:05         ` Re: pg_dump Ron Johnson <[email protected]>
2024-08-13 12:35         ` Re: pg_dump David G. Johnston <[email protected]>

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