Yep, you called it:
Nov 2 20:30:45 localhost kernel: Out of memory: Kill process 30438 (postmaster) score 709 or sacrifice child
Nov 2 20:30:45 localhost kernel: Killed process 30438, UID 26, (postmaster) total-vm:3068900kB, anon-rss:1695392kB, file-rss:1074692kB
So it's running out of memory when trying to dump this table. The "old" server has 4GB of ram, the "new" server 20GB.
On Sun, Nov 4, 2018 at 3:13 PM Adrian Klaver <adrian.klaver@xxxxxxxxxxx> wrote:
On 11/4/18 8:38 AM, Charles Martin wrote:
>
> Adtrian said:
>>> pg_dump: Error message from server: server closed the connection
>>> unexpectedly
>
> >Is this error the client reporting?
> >Is this the same that is showing up in the server log?
>
> Yes, that's the client message, i.e. what appeared in the terminal
> window that gave the command. The server log shows:
>
> 2018-11-02 20:30:46 EDT [20405]: [4-1] user=,db= LOG: server process
> (PID 30438) was terminated by signal 9: Killed
>
> 2018-11-02 20:30:46 EDT [20405]: [5-1] user=,db= DETAIL: Failed process
> was running: COPY public.docfile (docfile_pkey, docfileoriginalname,
> ordernumber, versionnum, docfilecontents, docfilepath, d$
>
> 2018-11-02 20:30:46 EDT [20405]: [6-1] user=,db= LOG: terminating any
> other active server processes
>
> 2018-11-02 20:30:46 EDT [20415]: [10-1] user=,db= WARNING: terminating
> connection because of crash of another server process
>
> 2018-11-02 20:30:46 EDT [20415]: [11-1] user=,db= DETAIL: The
> postmaster has commanded this server process to roll back the current
> transaction and exit, because another server process exited abnor$
>
>
>
>>So where is the server located relative to the pg_dump client?
>>On the same machine?
>>If so is it a virtual machine e.g AWS?
>>Across a local or remote network?
>
>
> I gave the command in a terminal session after SSHing to the server
> from the same network. It is not a virtual machine.
>
>
> Lsaurenz said:
>
>
>>You probably have a corrupted database.
>>You should get that fixed first, then you can upgrade.
>>Maybe you should hire a professional for that.
>
>
> I suspect this is is correct, both that there is corruption in the table
> and that I need a professional to help. If someone here is available,
> I'm interested.
Given that this involves your largest table I would confirm that the
signal 9 kill was not coming from the system OOM killer. Take a look at
the system logs to see what they show over the same time period.
>
>
> Andreas said:
>
>
> >which exact minor version please?
>
>
> PostgreSQL 9.6.10 on x86_64-pc-linux-gnu, compiled by gcc (GCC) 4.4.7
> 20120313 (Red Hat 4.4.7-23), 64-bit
>
>
--
Adrian Klaver
adrian.klaver@xxxxxxxxxxx
