On Wed, Oct 1, 2008 at 11:57 AM, Alvaro Herrera
<alvherre@commandprompt.com> wrote:
> Tom Lane escribió:
>> No, not at all. Block-level checksums would be an order of magnitude
>> more expensive: they're on bigger chunks of data and they'd be done more
>> often.
>
> More often? My intention is that they are checked when the buffer is
> read in, and calculated/stored when the buffer is written out.
> In-memory changers of the block do not check nor recalculate the sum.
>
> Is this not OK?
That is the way it should work, only on read-in/write-out.
--
Jonah H. Harris, Senior DBA
myYearbook.com