On Tue, Jul 7, 2009 at 1:46 PM, Lewis Kapell <lkapell@xxxxxxxxxxxxx> wrote:
If you were planning to upgrade to 8.4 in the near future, then you wouldn't have to worry about these settings any more. Those settings tune themselves and they are no longer specified in the configuration file.
+1
The visibility map also helps with vacuum, it keeps the amount of un-necessary I/O down (if a whole block has 'live' rows anyway).
--Scott
Lewis Kapell
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