I want to move one table from one disk to another. In order to do this I wanted to create a new tablespace on the new disks and issue the command alter table tablename set tablespace tablespacename; The question is, will this in any way affect the database which is in heavily use? The table in question is the largest one approximately 90GB. Thanks Leif Gunnar Erlandsen -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general