Re: default_tablespace in 8.3 postgresql

This puzzles me too! I found that bizarre myself. What is even more interesting, we have about 80 databases, and all of them now have default_tablespace=vol4, except only one - "control" database. The only explanation I would have that all of those databases which have tablespace vol4 as default were copied from template1 without explicitly specified tablespace name...

postgres=# select * from pg_database limit 10;
datname | datdba | encoding | datistemplate | datallowconn | datconnlimit | datlastsysoid | datfrozenxid | dattablespace | datconfig | datacl
-----------------------------+--------+----------+---------------+--------------+--------------+---------------+--------------+---------------+---------------------------+-----------------------------------------------------
template0 | 10 | 0 | t | f | -1 | 11510 | 378 | 1663 | | {=c/postgres,postgres=CTc/postgres}
postgres | 10 | 0 | f | t | -1 | 11510 | 7554523 | 1663 | |
control | 16389 | 6 | f | t | -1 | 11510 | 7554887 | 16384 | {default_tablespace=vol1} | {=T/dba,dba=CTc/dba,oper=c/dba,nagios=c/dba}
template1 | 10 | 0 | t | t | -1 | 11510 | 7554847 | 16384 | {default_tablespace=vol4} | {=c/postgres,postgres=CTc/postgres}
conversion_alerts_fs | 16393 | 0 | f | t | -1 | 11510 | 7554847 | 16384 | {default_tablespace=vol4} | {=T/build,build=CTc/build,tableau_readonly=c/build}
conversion_feasibility_too | 16393 | 0 | f | t | -1 | 11510 | 7554847 | 16384 | {default_tablespace=vol4} |
conversion_feasibility_tool | 16393 | 0 | f | t | -1 | 11510 | 7554847 | 16384 | {default_tablespace=vol4} |
custom_searches_au | 16393 | 6 | f | t | -1 | 11510 | 7554847 | 16384 | {default_tablespace=vol4} | {=T/build,build=CTc/build,tableau_readonly=c/build}

I've found that very bizarre myself, that default_tablespace would be changed for already existing databases without me altering it explicitly...
Sigh
________________________________
From: David G. Johnston <david(dot)g(dot)johnston(at)gmail(dot)com>
Sent: Wednesday, May 15, 2019 1:23 PM
To: Julie Nishimura
Cc: Adrian Klaver; pgsql-general(at)lists(dot)postgresql(dot)org
Subject: Re: default_tablespace in 8.3 postgresql

On Wed, May 15, 2019 at 1:01 PM Julie Nishimura <juliezain(at)hotmail(dot)com<mailto:juliezain(at)hotmail(dot)com>> wrote:
However, since I have modified template1 (and most likely, those databases were copied from it in the past), it changed default_parameter for them as well.

This seems unlikely to be the case - changing template1 should not be affecting other existing databases.

David J.