Thanks Laurenz for your post... Some more info Oracle Server:Oracle 11g R2 (11.2.0.2.0) Client: 11.2 Was installed using Oracle Universal Installer I don't really want to post the full environment of the postmaster but basically I could see no entry in there for ORACLE_HOME or TNS_ADMIN, should I? LD_LIBRARY_PATH=mypostgreshomedirectory/lib are there any others in particular of interest? Here is my fdw, server and foreign table specs. I have 'myinstancename' defined in tnsnames.ora which is in $ORACLE_HOME/NETWORK/ADMIN CREATE FOREIGN DATA WRAPPER oracle_fdw HANDLER oracle_fdw_handler VALIDATOR oracle_fdw_validator; ALTER FOREIGN DATA WRAPPER oracle_fdw OWNER TO postgres; CREATE SERVER myinstancename FOREIGN DATA WRAPPER oracle_fdw OPTIONS (dbserver 'myinstancename'); ALTER SERVER myinstancename OWNER TO postgres; CREATE FOREIGN TABLE public.wild_lek ("WL_ID" integer , "WL_ALIAS" character varying(50) , "WL_AHM_FL" character varying(1) , "WL_INACTIVE_FL" character varying(1) , "WL_SATELLITE_FL" character varying(20) , "WL_LESPPSG_FL" character varying(1) ) SERVER myinstancename OPTIONS (table 'MYUSER.MYTABLE'); ALTER FOREIGN TABLE 'MYUSER.MYTABLE' OWNER TO postgres; Rob -- View this message in context: http://postgresql.1045698.n5.nabble.com/oracle-fdw-tp5728931p5729005.html Sent from the PostgreSQL - general mailing list archive at Nabble.com. -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general