Hi, On 2019-04-02 15:35:53 -0700, AI Rumman wrote: > I am running Postgresql 10 where I can see the template0 database is having > longest datfrozenxid: > ```db_name age_of_datfrozenxid > -------------------------------------- > postgres 251365 > template1 234574 > template0 75366462 > db1 253097 > db2 250649 > db3 250649 > db4 14641 > db5 14214``` > > Initially I had high age for all the databases and I ran "vacuum freeze" > which brought down the age of other databases. But how can I do the same > for template0? 75 million isn't that high - autovacuum will automatically look at it once above autovacuum_max_freeze_age (defaulting to 200 million). If you really for some reason need to make it have a lower datfrozenxid (why?), you'd need to update its pg_database entry to allow connections, connect to it, vacuum it, and change datallowconn back. Greetings, Andres Freund
