Firstly, I apologise for the delay in replying to you.
>On which of the database clusters are you seeing the 4 template0 databases? template0 looks the same on both the master and slave, ======================================================= $ psql -U user -l -h master | grep template0 template0 | postgres | UTF8 | C | C | =c/postgres + template0 | postgres | UTF8 | C | C | =c/postgres + template0 | postgres | UTF8 | C | C | =c/postgres + template0 | postgres | UTF8 | C | C | =c/postgres + $ psql -U user -l -h slave1 | grep template0 template0 | postgres | UTF8 | C | C | =c/postgres + template0 | postgres | UTF8 | C | C | =c/postgres + template0 | postgres | UTF8 | C | C | =c/postgres + template0 | postgres | UTF8 | C | C | =c/postgres + $ psql -U user -l -h slave2 | grep template0 template0 | postgres | UTF8 | C | C | =c/postgres + template0 | postgres | UTF8 | C | C | =c/postgres + template0 | postgres | UTF8 | C | C | =c/postgres + template0 | postgres | UTF8 | C | C | =c/postgres + ======================================================= >How are the databases created? We create database at createdb command. ex) createdb -O user -E UTF8 --lc-ctype ja_JP.UTF8 -T template0 <dbname> Best regards, Kazuaki Fujikura 2016-02-11 4:41 GMT+09:00 Adrian Klaver <adrian.kla...@aklaver.com>: > On 02/10/2016 07:19 AM, Kazuaki Fujikura wrote: > >> Thank you for your comments. >> >> >Can you explain what your replication set up is? >> >> Streaming Replication. >> => >> master----slave1 (async) >> master----slave2 (async) >> >> >So are you doing the below on the master, the slaves or all? >> =>master >> >> Our current plan at this moment is >> - Upgrade 9.1.19 from 9.1.6 at the end of March at our scheduled >> maintenance >> - Export and import pg_dump files ( to eliminate the effect of template0 >> and xid, which are all reset at import) >> >> We are still afraid that it is too late (as we still have 4 strange >> template0 files). So, if you have any ideas/suggestions which we can try >> before scheduled maintenance, that is much appreciated. >> > > On which of the database clusters are you seeing the 4 template0 databases? > > From a previous post: > > "We have more than 1100 databases and create new database every day > whenever new customer comes. .." > > How are the databases created? > > > >> >> Best regards, >> Kazuaki Fujikura >> >> > > -- > Adrian Klaver > adrian.kla...@aklaver.com >