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

"Vishal Mailinglist" <list@xxxxxxxxxxxxx> · Fri, 23 May 2008 17:34:30 -0400

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.

Yes try that . Though I dont think thats going to help. Just checking are you using AMD server any chance .

Please provide complete config of your installation.
Hardware : what machine is it the process , RAM etc
Software : OS , PostgreSQL version 

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. 

Yes , shutdown PostgreSQL,  copy the data folder and reinstall the server and after initialisation restart the server. Before you attempt that make sure you backup atleast the database folder.

Also during backup , post the log file to the community so they can look at it.

On Fri, May 23, 2008 at 8:53 AM, Vishal Mailinglist <list@xxxxxxxxxxxxx> 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@xxxxxxxxx> 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 