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Adrian, thanks for your reply.
This is very interesting behavior...
Those databases have been created long time ago, only some tables in them were created today.
So, make it more clear: lets say we have 5 user databases, 5 tables in each db, + template0, template1, . I have modified 3 user databases and template1 to use new tablespace. 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. Interesting...
Thanks
From: Adrian Klaver <adrian.klaver@xxxxxxxxxxx>
Sent: Wednesday, May 15, 2019 12:47 PM To: Julie Nishimura; pgsql-general@xxxxxxxxxxxxxxxxxxxx; pgsql-general Subject: Re: default_tablespace in 8.3 postgresql On 5/15/19 12:39 PM, Julie Nishimura wrote:
> Hello, I have created new tablespace on a new drive yesterday and > modified some of existing databases to use this tablespace as default, > like this: > ALTER DATABASE xxx > SET default_tablespace = 'vol4'; > > So, this command did not physically move any existing tables/indices on > the database xxx, but all new objects are currently being created on > this tablespace (this was expected). > > Please note, I also altered "template1" database to use new volume, to > ensure all new databases will be created there by default. > > ALTER DATABASE template1 > SET default_tablespace = 'vol4'; > > However, I have not yet modified postgresql.conf, and our settings for > default_tablespace and temp_tablespaces still set to use "vol3", because > I was planning to leave some of databases out of vol4 (newer > tablespace), since I did NOT altered their default_tablespace, and it > was previously set to vol3. > > Today, checking which tables were created where, I noticed, that all new > tables, including tables from those databases which I did not alter to > use new volume as default_tablespace, have been created on new volume 4. > If I select from pg_database, I can see all my user databases have > default_tablespace as vol4 (newer tablespace), even though I did not > modify it. So, my question is, could altering "template1" database > change default tablespace for all existing databases on a server??? https://www.postgresql.org/docs/8.3/manage-ag-tablespaces.html "If a database is created without specifying a tablespace for it, it uses the same tablespace as the template database it is copied from." > > PS. I could not make a mistake altering all, since I scripted my > commands before, eliminating some of databases, and I do not see it in > my script. Any thoughts? > > Thank you > -- Adrian Klaver adrian.klaver@xxxxxxxxxxx |
