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From: PostgreSQL <martin@portant.com>
To: pgsql-performance@postgresql.org
Subject: ALTER TABLE SET TABLESPACE and pg_toast
Date: Fri, 16 Dec 2005 08:25:41 -0600
Message-ID: <dnuip3$1rpa$1@news.hub.org> (raw)

We're storing tif images in a table as bytea.  We were running low on our 
primary space and moved several tables, including the one with the images, 
to a second tablespace using ALTER TABLE SET TABLESPACE.
This moved quite cleaned out quite a bit of space on the original 
tablespace, but not as much as it should have.  It does not appear that the 
corresponding pg_toast tables were moved.  So, my questions are:

1) Is there a way to move pg_toast tables to new tablespaces (or at least 
assure that new ones are created there)?
2) Also, is there a good way to determine which pg_toast tables are 
associated with any particular table and column?

Thank you for your help,
Martin 





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