On Wed, May 17, 2006 at 01:39:35PM -0700, Sriram Dandapani wrote: > About 5-10 million rows stay after deletion. There are a few other > tables where the daily deletion totals about 3-6 million. The default autovac settings will only vacuum a table after 40% of the rows are dead. That seems pretty high to me, so I regularly recommend cutting all the thresholds and scale factors in half. > Would a vacuum full/cluster affect other operations. These tables have a > 24x7 high data insertion rate. VACUUM FULL and CLUSTER both aquire exclusive locks. BTW, it sounds like table partitioning might be useful for you. It would allow you to setup a partition for each day, and then drop one day's worth of data very quickly. -- Jim C. Nasby, Sr. Engineering Consultant jnasby@xxxxxxxxxxxxx Pervasive Software http://pervasive.com work: 512-231-6117 vcard: http://jim.nasby.net/pervasive.vcf cell: 512-569-9461
