In documentation http://www.postgresql.org/docs/9.1/static/routine-vacuuming.html is this information about autovacuum_freeze_max_age: "if autovacuum_freeze_max_age is set to its maximum allowed value of a little less than two billion". What is exact maximum allowed value of autovacuum_freeze_max_age?
Sincerely,
Radovan Jablonovsky
