Thread: Error while executing pg_dump "invalid memory alloc request size 4294967293"

Hello  All,

We are using postgresql version 8.1 and our database size is 7gb. Ram Size is 2 GB. 

while trying to take backup through pg_dump i am getting following error.

oka97:  pg_dump amtdb > amtdb.out
pg_dump: ERROR:  invalid memory alloc request size 4294967293
pg_dump: SQL command to dump the contents of table "atbs2_logs" failed: PQendcopy() failed.
pg_dump: Error message from server: ERROR:  invalid memory alloc request size 4294967293
pg_dump: The command was: COPY public.atbs2_logs (sno, request_time, msisdn, phone_make, error_code, error_desc, reply_message, request_query, responce_time, request_type) TO stdout;
When I tried to take a single table backup i.e is mentioned in the error named "public.atbs2_logs"  then again getting following error.

pg_dump: SQL command failed
pg_dump: Error message from server: server closed the connection unexpectedly
This probably means the server terminated abnormally
before or while processing the request.
pg_dump: The command was: FETCH 100 FROM _pg_dump_cursor

So we are unable to take backup , we have tried the vacuum and reindex but not of any use.

Kindly help us Any help would be highly appreciate. Thanx in Advance.

Amit Jain

+91-9818450022

--
Regards,
Vishal Kashyap.
Need help visit
http://help.vishal.net.in

Hi,
I have tried to taken backup while no one is connected. Should i change my RAM and then check it. Version are same of pg_dump and database version 8.1.

Should I copy the data folder ? and then restore it with new installation or what do you mean to say kindly brief it please. I will be thankful to any help. thanks a lot.

Amit jain wrote:
> Hello  All,
>
> We are using postgresql version 8.1 and our database size is 7gb. Ram Size
> is 2 GB.
>
> while trying to take backup through pg_dump i am getting following error.
>
> oka97:  pg_dump amtdb > amtdb.out
> pg_dump: ERROR:  invalid memory alloc request size 4294967293
> pg_dump: SQL command to dump the contents of table "atbs2_logs" failed:
> PQendcopy() failed.
> pg_dump: Error message from server: ERROR:  invalid memory alloc request
> size 4294967293
> pg_dump: The command was: COPY public.atbs2_logs (sno, request_time, msisdn,
> phone_make, error_code, error_desc, reply_message, request_query,
> responce_time, request_type) TO stdout;
>
> When I tried to take a single table backup i.e is mentioned in the error
> named* "public.atbs2_logs"  then again getting following error.
> *
>
>  pg_dump: SQL command failed
> pg_dump: Error message from server: server closed the connection
> unexpectedly
> This probably means the server terminated abnormally
> before or while processing the request.
> pg_dump: The command was: FETCH 100 FROM _pg_dump_cursor
>
>
> So we are unable to take backup , we have tried the vacuum and reindex but
> not of any use.

It seems to me that you have corrupted data in that table for some
reason, perhaps bad hardware? I bet that a simple "SELECT * FROM
atbs2_logs" will fail as well.

Which server version is this exactly? 8.1.what?

How far did the pg_dump get before the crash? Is there any output at all?

--
   Heikki Linnakangas
   EnterpriseDB   http://www.enterprisedb.com

Hi ,

I have tried to taken backup while no one is connected. Should i change my RAM and then check it. Version are same of pg_dump and database version 8.1.

Should I copy the data folder ? and then restore it with new installation or what do you mean to say kindly brief it please. I will be thankful to any help. thanks a lot.

On Fri, May 23, 2008 at 8:53 AM, Vishal Mailinglist <list@vishal.net.in> wrote:

Hi ,

 

Make sure no one is connected to the database while doing the back up. Usually memory alloc error comes if its a bad  RAM .
check the pg_dump version and your database version match (this could be a guess)
try file level backup and restore into new database.

 

On 22/05/2008, Amit jain <amitjain.bit@gmail.com> wrote:

Hello  All,

We are using postgresql version 8.1 and our database size is 7gb. Ram Size is 2 GB. 

while trying to take backup through pg_dump i am getting following error.

oka97:  pg_dump amtdb > amtdb.out
pg_dump: ERROR:  invalid memory alloc request size 4294967293
pg_dump: SQL command to dump the contents of table "atbs2_logs" failed: PQendcopy() failed.
pg_dump: Error message from server: ERROR:  invalid memory alloc request size 4294967293
pg_dump: The command was: COPY public.atbs2_logs (sno, request_time, msisdn, phone_make, error_code, error_desc, reply_message, request_query, responce_time, request_type) TO stdout;
When I tried to take a single table backup i.e is mentioned in the error named "public.atbs2_logs"  then again getting following error.

pg_dump: SQL command failed
pg_dump: Error message from server: server closed the connection unexpectedly
This probably means the server terminated abnormally
before or while processing the request.
pg_dump: The command was: FETCH 100 FROM _pg_dump_cursor

So we are unable to take backup , we have tried the vacuum and reindex but not of any use.

Kindly help us Any help would be highly appreciate. Thanx in Advance.

Amit Jain

+91-9818450022

 

--
Regards,
Vishal Kashyap.
Need help visit
http://help.vishal.net.in

--
Regards,
Vishal Kashyap.
Need help visit
http://help.vishal.net.in