Andreas Pflug <[EMAIL PROTECTED]> writes:
> Tom Lane wrote:
>> Why is that a useful approach?  You might as well shut down the
>> postmaster and do a cold filesystem backup, 
>> 
> We're talking about *hot* backup, aren't we?

Exactly.  The approach you're sketching can't work for hot backup,
because it effectively assumes that the database won't be changing.

                        regards, tom lane

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