2008/8/1 Matthew Wakeling <matthew@xxxxxxxxxxx>: > On Thu, 31 Jul 2008, Andrzej Zawadzki wrote: >> >> Maybe I'm wrong but if this "bulk insert and delete" process is cyclical >> then You don't need vacuum full. >> Released tuples will fill up again with fresh data next day - after >> regular vacuum. > > Yes, a regular manual vacuum will prevent the table from growing more than > it needs to. However, a vacuum full is required to actually reduce the size > of the table from 7.5G to 2.7G if that hasn't been done on the production > system already. One good possibility is use pg8.3 for fix problem. Enable Autovacuum+HOT was won a significant performance compared with 8.2 and minor versions. :) Kind Regards, -- Fernando Ike http://www.midstorm.org/~fike/weblog