I am also seeing a drift in the n_live_tup value compared to actual row count on the table on PG9.0.6 It drifts after a vacuum , you can bring it back closer to the actual number by running ANALYSE several times, you can lock it back into the right value with a vacuum full, but then if you run a vacuum it shows a n_live_tup less than the actual rows in the table. This is on a table seeing 80% HOT updates. Its a table that is heavily updated. Server not running autovacuum Tim -- View this message in context: http://postgresql.1045698.n5.nabble.com/Statistics-mismatch-between-n-live-tup-and-actual-row-count-tp5059317p5735108.html Sent from the PostgreSQL - general mailing list archive at Nabble.com. -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general