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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.g.johnston@xxxxxxxxx>
Sent: Wednesday, May 15, 2019 1:23 PM To: Julie Nishimura Cc: Adrian Klaver; pgsql-general@xxxxxxxxxxxxxxxxxxxx Subject: Re: default_tablespace in 8.3 postgresql On Wed, May 15, 2019 at 1:01 PM Julie Nishimura <juliezain@xxxxxxxxxxx> wrote:
This seems unlikely to be the case - changing template1 should not be affecting other existing databases.
David J.
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