Thread: pg_toast size
Hi everyone,
I've seen my pg_toast tables are becoming bigger and bigger. After googling I would like to modify my max_fsm_pages parameter to prevent that kind of problem. So I'm wondering if changing this parameter is enough and after that how can I reduce the size of these tables? By doing a full vacuum?
Thanks in advance,
Julien
On Fri, Apr 14, 2006 at 03:13:43PM +0200, Julien Drouard wrote: > Hi everyone, > > I've seen my pg_toast tables are becoming bigger and bigger. After googling I would like to modify my max_fsm_pages parameterto prevent that kind of problem. So I'm wondering if changing this parameter is enough and after that how can Ireduce the size of these tables? By doing a full vacuum? A full vacuum would do it. CLUSTERing the table might rewrite the toast tables as well. As for toast, if you do a vacuum verbose over the entire cluster, it will tell you at the end how much space you need in the FSM. See also http://www.pervasivepostgres.com/instantkb13/article.aspx?id=10087 and http://www.pervasivepostgres.com/instantkb13/article.aspx?id=10116 -- Jim C. Nasby, Sr. Engineering Consultant jnasby@pervasive.com Pervasive Software http://pervasive.com work: 512-231-6117 vcard: http://jim.nasby.net/pervasive.vcf cell: 512-569-9461