Re: Disaster recovery: pg_class

> I'm not convinced there's anything much there you need to fix. You
> should look into why the filesystem seems to have lost part of your WAL
> file --- that strongly suggests that the disk or kernel is lying about
> write ordering, which will cause you problems eventually. But this
> message per se will go away as soon as the WAL endpoint moves another
> 1.5Mb. Unless there's other corruption elsewhere you'll be fine.
>
> regards, tom lane

Hi Tom,
I think that the system crash is due to a ram failure,
my server doesn't start if is present a specific bank of ram,
and without it, it works fine.

I watched logs and in the /var/mail/postgres and I've seen this error that matchs in time with system crash.

pg_dump: ERROR: invalid memory alloc request size 18446744073709551613

regards
Enrico

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