Re: Total crash of my db-server

henrik,

i had the exact same problem as well earlier this year on a dual xeon.
the problem ended up being memory.  even though we had registered ecc
memory, that didn't make any difference.

--brian

On Mon, 2002-12-16 at 09:23, scott.marlowe wrote:
> Henrik, have you tested the memory and drive subsystems on this machine?
>
> All this sounds very much like how an old server of mine was behaving when
> I had bad memory.  No database can be expected to perform reliably on
> unreliable hardware.
>
> Look for memtest86 if you're on intel hardware.  Look at badblocks on
> linux, or whatever OS you're on, for mapping out bad drive blocks.
>
> If your machine is dying with NO ping response, it has serious problems,
> and postgresql is just revealing them.
>
> Good luck on troubleshooting this problem.
>
> On Sun, 15 Dec 2002, Henrik Steffen wrote:
>
> >
> > Hello all,
> >
> > sometimes I experience a total crash of my
> > db-server while e.g. doing automated maintainance tasks:
> >
> > At 2:30 am every night the webserver is shut
> > down, so there won't be any concurrent accesses to the
> > db-server. then there will be done a
> > VACUUM FULL
> >
> > This is what happened tonight while fully vacuuming:
> >
> > server closed the connection unexpectedly
> > This probably means the server terminated abnormally
> > before or while processing the request.
> >
> > Then, the script selects all user tables and starts
> > reindexing them. Tonight, reindexeing the first table
> > started and seconds later the whole server crashed.
> >
> > No ping, nothing else possible....
> >
> > This is the list of recent crashes:
> > Tonight 02:42 am
> > Yesterday night 02:39 am
> > Tuesday at 10:34 am
> > Last saturday at 10:44 am
> > Last Tuesday at 02:19 am
> > The saturday before at 04:01 am
> > The thursday before at 04:02 am
> > the tuesday before at 02:25 am
> >
> > Always complete crashes... only reset helped.
> >
> > Most crashes occur while maintainance tasks.
> > However, there are some other crashes, too.
> >
> > There are never any hints in /var/log/messages
> >
> > I upgraded to postgresql 7.3 recently, but it doesn't
> > seem to help either.
> >
> > I am almost desperate.
> >
> > We are running some mysql-servers here, too, and I
> > more and more often try to imagine to move my whole
> > system to a mysql-server... my collegues NEVER have
> > had such trouble with their mysql-servers yet....
> >
> > Do you have any hints for me? What can I do? My last
> > choice would be to move to mysql, but I am almost
> > desperate....
> >
> > thanks for your help
> >
> > --
> >
> > Mit freundlichem Gruß
> >
> > Henrik Steffen
> > Geschäftsführer
> >
> > top concepts Internetmarketing GmbH
> > Am Steinkamp 7 - D-21684 Stade - Germany
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> > mail: steffen@topconcepts.com       Fax. +49 4141 991233
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--
Brian Hirt <bhirt@mobygames.com>