Brian Hirt <[EMAIL PROTECTED]> writes:
> I can analyze that table without problems.  I don't know if it's the  
> same table every time.   I'm trying to set up a development  
> environment where i can test this stuff better without messing up our  
> production systems. The table does have an expresional index.

I've managed to reproduce this: the triggering condition is that a
single autovac iteration has to VACUUM one table and then ANALYZE
(no vac) another table that has an expressional index with a plpgsql
function.  It looks like we missed a path of control where
ActiveSnapshot has to be re-set-up, but I'm not clear where.

                        regards, tom lane

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