Alejandro wrote: > I need to know how to estimate physical index size. I can't find > any formulas in online documentation. For an existing index you probably want pg_relation_size(): http://www.postgresql.org/docs/9.0/interactive/functions-admin.html#FUNCTIONS-ADMIN-DBSIZE -Kevin -- Sent via pgsql-admin mailing list (pgsql-admin@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-admin