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Re: PGSQL 7.4.8 : idle in transaction problem

From: Brad Nicholson <bnichols(at)ca(dot)afilias(dot)info>
To: Mailing List Postgres-Admin <pgsql-admin(at)postgresql(dot)org>
Subject: Re: PGSQL 7.4.8 : idle in transaction problem
Date: 2005-07-21 14:46:25
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-admin
Tom Lane wrote:

>Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org> writes:
>>On Tue, Jul 19, 2005 at 10:44:35PM -0400, Tom Lane wrote:
>>>If it's a matter of whether VACUUM removes rows or not, that's expected:
>>>open-transaction bookkeeping is done across the whole cluster.  (This is
>>>not something simple to change, since we may have to consider
>>>transaction IDs in shared catalogs.)
>>I wonder if this restriction could be lifted if we tracked last-vacuum-
>>Xid per relation?
>No, that's unrelated.  What is of concern is the open-transaction

 From a Slony-I users standpoint - the idle transactions cause 
pg_listener bloat, which can impact replication performance on busy sites.

Brad Nicholson  416-673-4106
Database Administrator, Afilias Canada Corp.

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