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Re: Small patch to replace 'idle' by 'trans' if transaction is still open

From: Philip Warner <pjw(at)rhyme(dot)com(dot)au>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: Christof Petig <christof(dot)petig(at)wtal(dot)de>, Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>, pgsql-patches(at)postgresql(dot)org
Subject: Re: Small patch to replace 'idle' by 'trans' if transaction is still open
Date: 2000-10-11 16:12:47
Message-ID: 3.0.5.32.20001012021247.021dd100@mail.rhyme.com.au (view raw or flat)
Thread:
Lists: pgsql-hackerspgsql-patches
At 10:54 11/10/00 -0400, Tom Lane wrote:
>Philip Warner <pjw(at)rhyme(dot)com(dot)au> writes:
>> Any chance of showing if anything has been updated in the TX?
>
>Hmm ... SharedBufferChanged would probably do as a proxy for that ...
>not sure if it's a good idea though.

The idea was to indicate if the process is likely to be causing a locking
problem - but now I think about it, a more useful pice of information would
be if any tables/rows/whatever are locked in such a way that another user
might be prevented from doing an update. Is this possible?

I would maintain that if possible, it is useful to distinguish logical
'read-only' transactions from TXs that might lock another user.


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