Pallav Kalva wrote: > Tom Lane wrote: >> Probably represents freezing of old tuples, which is a WAL-logged >> operation as of 8.2. Is it likely that the data is 200M transactions >> old? >> > If nothing changed on these tables how can it freeze old tuples ? > Does it mean that once it reaches 200M transactions it will do the same > thing all over again ? No -- once tuples are frozen, they don't need freezing again (unless they are modified by UPDATE or DELETE). > If I am doing just SELECTS on these tables ? how can there be any > transactions ? or SELECTS considered transactions too ? Selects are transactions too. They just don't modify data. -- Alvaro Herrera http://www.CommandPrompt.com/ PostgreSQL Replication, Consulting, Custom Development, 24x7 support ---------------------------(end of broadcast)--------------------------- TIP 4: Have you searched our list archives? http://archives.postgresql.org
