RE: AW: more corruption

From: "Hiroshi Inoue" <Inoue(at)tpf(dot)co(dot)jp>
To: "Tom Lane" <tgl(at)sss(dot)pgh(dot)pa(dot)us>, "Tim Perdue" <tperdue(at)valinux(dot)com>
Cc: <pgsql-hackers(at)hub(dot)org>
Subject: RE: AW: more corruption
Date: 2000-07-10 23:56:31
Message-ID: 000d01bfeaca$784144e0$2801007e@tpf.co.jp
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> -----Original Message-----
> From: pgsql-hackers-owner(at)hub(dot)org [mailto:pgsql-hackers-owner(at)hub(dot)org]On
> Behalf Of Tom Lane
>
> Tim Perdue <tperdue(at)valinux(dot)com> writes:
> >>>>>> -now hopefully I can create my indexes and be back in business
>
> > I vacuumed here and it worked. I did not use my "old" pg_log file - what
> > did I lose?
>
> Hard to tell. Any tuples that weren't already marked on disk as "known
> committed" have probably gone missing, because their originating
> transaction IDs likely won't be shown as committed in the new pg_log.
> So I'd look for missing tuples from recent transactions in the old DB.
>

Hmm,this may be more serious.
MVCC doesn't see committed(marked HEAP_XMIN_COMMITTED) but
not yet committed(t_xmin > CurrentTransactionId) tuples.
He will see them in the future.

Regards.

Hiroshi Inoue
Inoue(at)tpf(dot)co(dot)jp

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