From: | Devrim GUNDUZ <devrim(at)gunduz(dot)org> |
---|---|
To: | Joe Conway <mail(at)joeconway(dot)com> |
Cc: | pgsql-general(at)postgresql(dot)org |
Subject: | Re: PG 8.0.4, Centos and 64 bit |
Date: | 2005-10-18 06:34:58 |
Message-ID: | Pine.LNX.4.63.0510180741540.6475@mail.kivi.com.tr |
Views: | Raw Message | Whole Thread | Download mbox | Resend email |
Thread: | |
Lists: | pgsql-general |
Hi,
On Mon, 17 Oct 2005, Joe Conway wrote:
>> We currently don't have a x86_64 server that runs RHEL 4. That's why there
>> are no RPMs for that arch (I've uploaded RPMs for many platforms BTW). If
>> someone wants to assist us to build RPMs for that platform, please contact
>> me. We'll give you all the necesarry information.
>
> I will have several RHEL 4 servers by early November, and will be building
> RPMs for them. I'll let you know when I have RPMs ready.
Great news. Thanks Joe.
--
Devrim GUNDUZ
Kivi Bilişim Teknolojileri - http://www.kivi.com.tr
devrim~gunduz.org, devrim~PostgreSQL.org, devrim.gunduz~linux.org.tr
http://www.gunduz.org
>From pgsql-general-owner(at)postgresql(dot)org Tue Oct 18 04:18:30 2005
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Date: Tue, 18 Oct 2005 00:18:24 -0700 (PDT)
From: CSN <cool_screen_name90001(at)yahoo(dot)com>
Subject: Re: Duplicate primary keys/rows
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: pgsql-general(at)postgresql(dot)org
In-Reply-To: <5567(dot)1128976137(at)sss(dot)pgh(dot)pa(dot)us>
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I don't know if I'm going to get a copy of
pg_filedump. What's the best way to fix this - dump
then restore?
CSN
--- Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> CSN <cool_screen_name90001(at)yahoo(dot)com> writes:
> > oid | ctid | xmin | cmin | xmax |
> cmax | id
> >
>
--------+-----------+---------+------+---------+------+-----
> > 125466 | (2672,11) | 1445346 | 0 | 1481020 |
> 0 | 985
> > 125466 | (2745,50) | 1481020 | 0 | 1682425 |
> 2 | 985
>
> Hmm. The fact that the dup rows have the same OID
> indicates pretty
> strongly that they are actually two versions of the
> same row, and
> not two independently inserted rows. Furthermore we
> can see that xact
> 1481020 deleted the first version and inserted the
> second (note I took
> the liberty of rearranging your output to make the
> rows appear in
> chronological order).
>
> So the index hasn't screwed up, exactly; the problem
> is that both rows
> appear as good at the same time. But why?
>
> It's really highly annoying that we can't see the
> contents of the
> infomasks for the rows. Would you be willing to
> grab a copy of
> pg_filedump and dump out these two data pages so we
> can see the
> complete tuple headers?
>
> (If you don't have a compiler then you'd need to
> find a precompiled
> copy of pg_filedump for Windows. I don't know if
> anyone's made one
> available.)
>
> Given that you say the machine has been crashing, my
> bet is that a crash
> caused the loss of pg_clog status for xid 1481020 at
> a time when
> 2745,50's xmin had been marked committed good, but
> 2672,11's xmax had
> not been similarly marked. We have sufficient
> defenses against this
> sort of thing *if the disk drive does not lie about
> write complete*.
> (Unfortunately the vast majority of el-cheapo PCs
> are configured to lie
> with abandon, which means that we can't guarantee
> data consistency
> across power failures on such hardware.) It'd be
> nice to get direct
> confirmation of that theory though.
>
> regards, tom lane
>
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