pg_dump causes postgres crash - Mailing list pgsql-general

From Jeff Amiel
Subject pg_dump causes postgres crash
Date
Msg-id 864994.9762.qm@web60819.mail.yahoo.com
Whole thread Raw
Responses Re: pg_dump causes postgres crash  (Tom Lane <tgl@sss.pgh.pa.us>)
List pgsql-general
Fairly new (less than a week) install.
"PostgreSQL 8.2.4 on i386-pc-solaris2.10, compiled by
GCC gcc (GCC) 3.4.3 (csl-sol210-3_4-branch+sol_rpath)"

database size around 43 gigabytes.

2 attempts at a pg_dump across the network caused the
database to go down...

The first time I thought it was because of mismatched
pg_dump (was version 8.0.X)...but the second time it
was definitely 8.2.4 version of pg_dump.

My first thought was corruption...but this database
has successfully seeded 2 slony subscriber nodes from
scratch as well running flawlessly under heavy load
for the past week.

Even more odd is that a LOCAL pg_dump (from on the
box) succeeded just fine tonight (after the second
crash).

Thoughts?

----First Crash-------

backup-srv2 prod_backup # time /usr/bin/pg_dump
--format=c --compress=9 --ignore-version
--username=backup --host=prod_server prod > x

pg_dump: server version: 8.2.4; pg_dump version:
8.0.13
pg_dump: proceeding despite version mismatch
pg_dump: WARNING:  terminating connection because of
crash of another server process
DETAIL:  The postmaster has commanded this server
process to roll back the current transaction and exit,
because another server process exited abnormally and
possibly corrupted shared memory.
HINT:  In a moment you should be able to reconnect to
the database and repeat your command.
pg_dump: server closed the connection unexpectedly
       This probably means the server terminated
abnormally
       before or while processing the request.
pg_dump: SQL command to dump the contents of table
"access_logs" failed: PQendcopy() 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: COPY public.access_logs (ip,
username, "action", date, params) TO stdout;


------Second Crash--------

backup-srv2 ~ # time /usr/bin/pg_dump --format=c
--compress=9  --username=backup --host=prod_server
prod | wc -l
pg_dump: Dumping the contents of table "audit" failed:
PQgetCopyData() 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: COPY public.audit (audit_id,
entity_id, table_name, serial_id, audit_action,
when_ts, user_id, user_ip) TO stdout;









____________________________________________________________________________________
Moody friends. Drama queens. Your life? Nope! - their life, your story. Play Sims Stories at Yahoo! Games.
http://sims.yahoo.com/

pgsql-general by date:

Previous
From: Ged
Date:
Subject: %TYPE
Next
From: Greg Smith
Date:
Subject: Re: Postgres, fsync and RAID controller with 100M of internal cache & dedicated battery