Re: User Level Lock question

From: Neil Conway <nconway(at)klamath(dot)dyndns(dot)org>
To: Lance Ellinghaus <lellinghaus(at)yahoo(dot)com>
Cc: pgsql-hackers(at)postgresql(dot)org
Subject: Re: User Level Lock question
Date: 2002-03-15 22:24:02
Message-ID: 1016231042.26927.14.camel@jiro
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On Fri, 2002-03-15 at 14:54, Lance Ellinghaus wrote:
> I know it does not sound like something that would need to be done, but here
> is why I am looking at doing this...
>
> I am trying to replace a low level ISAM database with PostgreSQL. The low
> level ISAM db allows locking a record during a read to allow Exclusive
> access to the record for that process. If someone tries to do a READ
> operation on that record, it is skipped.

If the locked record is skipped, how can the application be sure it is
getting a consistent view of the data?

Cheers,

Neil

--
Neil Conway <neilconway(at)rogers(dot)com>
PGP Key ID: DB3C29FC

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