On 23 October 2011 03:15, Tom Lane <tgl@sss.pgh.pa.us> wrote:
> Thom Brown <thom@linux.com> writes:
>> Can I ask why it doesn't return the same snapshot ID each time?
>> Surely it can't change since you can only export the snapshot of a
>> serializable or repeatable read transaction?
>
> No, that's incorrect. You can export from a READ COMMITTED transaction;
> indeed, you'd more or less have to, if you want the control transaction
> to be able to see what the slaves do.
My bad. I didn't read the documentation carefully enough. I can make
sense of it now.
Thanks
--
Thom Brown
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