On 12 July 2010 14:50, Tom Wilcox <hungrytom@gmail.com> wrote:
> Hi Thom,
>
> I am performing update statements that are applied to a single table that is
> about 96GB in size. These updates are grouped together in a single
> transaction. This transaction runs until the machine runs out of disk space.
>
> What I am trying to achieve is for postgresql to complete this updating
> transaction without running out of memory. I assume that this is happening
> because for a Rollback to be possible, postgres must at least keep track of
> the previous values/changes whilst the transaction is not complete and
> committed. I figured this would be the most likely cause for us to run out
> of disk space and therefore I would like to reconfigure postgresql not to
> hold onto previous copies somehow.
>
> Any suggestions?
>
> Cheers,
> Tom
>
Hi Tom,
Is it not possible to do these updates in batches, or does it have to be atomic?
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Regards
Thom