On Mon, Apr 24, 2006 at 11:21:16AM +0530, Gourish Singbal wrote:
> The Age of the database is 1144759836 . We have enabled autovacuuming .
> The details are:-
> autovacuum = on
> autovacuum_naptime = 300
> autovacuum_vacuum_threshold = 10000
> autovacuum_analyze_threshold = 5000
> autovacuum_vacuum_scale_factor = 0.3
> autovacuum_analyze_scale_factor = 0.3
Those settings are *really* conservative... I normally use 400, 200,
0.2, 0.1 respectively...
> Wanted to know when the auto-vacuum daemon will run an database-wide vacuum
> call to avoid transaction ID wraparound failures.
IIRC it will do that somewhere between 2B and 4B transactions have
elapsed. The true answer lies somewhere in
src/backend/postmaster/autovacuum.c.
--
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