"PostgreSQL" <martin@xxxxxxxxxxx> writes: > 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. I think you're mistaken; at least, the SET TABLESPACE code certainly intends to move a table's toast table and index along with the table. What's your evidence for saying it didn't happen, and which PG version are you using exactly? > 2) Also, is there a good way to determine which pg_toast tables are > associated with any particular table and column? pg_class.reltoastrelid and reltoastidxid. See http://www.postgresql.org/docs/8.1/static/storage.html http://www.postgresql.org/docs/8.1/static/catalog-pg-class.html regards, tom lane