Hi, I have a question about the behavior of autovacuum. When I have a big table A which is being processed by autovacuum, I also manually use (full) vacuum to clean another table B. Then I found that I always got something like “found 0 removable, 14283 nonremovable row”. However, if I stop the autovacuum functionality and use vacuum on that big table A manually, I can clean table B (ex. found 22615 removable, 2049 nonremovable row). Is this correct? Why do vacuum and autovacuum have different actions? Ps. My postgreSQL is 8.4. -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance