Tom Lane wrote:
> Gaetano Mendola <[EMAIL PROTECTED]> writes:
>
>>it seems that a vacuum full on the whole DB is more aggressive.
>
>
> It is not.
>
> A much more plausible theory is that this is the result of concurrent
> changes to the table.  It is clear from the "dead row versions" stats
> that there were concurrent transactions ...

That is the more updated/inserted table, and yes there were some concurrent
transaction but, is it plausible that 82 dead rows were responsible of grab
26000 index row:

INFO:  index "ua_user_data_exp_id_user_key" now contains 34438 row versions in 886 
pages
DETAIL:  27488 index row versions were removed.

instead of:

INFO:  index "ua_user_data_exp_id_user_key" now contains 34519 row versions in 886 
pages
DETAIL:  1362 index row versions were removed.





Regards
Gaetano Mendola



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