Hi, Thank you a lot for your answer. I've done that (create a tablespace in another HD with POSTGRES role + put it as the main temp_tablespace in the conf). But ... my command ~# df show me that all queries use the default tablespace ... This was my commands (the directory is owned by postgres) : CREATE TABLESPACE hddtablespace LOCATION '/media/hdd/pgsql'; ALTER TABLESPACE hddtablespace OWNER TO postgres; SHOW temp_tablespaces; > hddtablespace In /media/hdd/pgsql I have only one empty directory (PG_9.3_201306121). Do you have any tips ? Thanks a lot guys ... -- View this message in context: http://postgresql.nabble.com/How-to-reduce-writing-on-disk-90-gb-on-pgsql-tmp-tp5852321p5853081.html Sent from the PostgreSQL - performance mailing list archive at Nabble.com. -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
