Awesome.. that did it! It was actually not set at all in postgresql.conf, although it was commented out as: # unix_socket_directory = '' Presumably it was using the default of '/tmp'? Anyway, after making that change dbt5 runs fine, but now when I try to connect via "psql" I get: psql.bin: could not connect to server: No such file or directory Is the server running locally and accepting connections on Unix domain socket "/tmp/.s.PGSQL.5432"? Why is psql looking in /tmp? -- View this message in context: http://postgresql.1045698.n5.nabble.com/DBT-5-Postgres-9-0-3-tp4297670p4709231.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