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
