trigger problem

Hi,

If I try this to run in a trigger function

'perform dblink_connect('myconnect','dbname=postgres password=uzleuven');
perform dblink_exec('myconnect', 'insert into test (uid) values (' || quote_literal(NEW.pat_id) || ')');
return new;
perform dblink_disconnect('myconnect');'

I get the message

'ERROR: duplicate connection name
SQL state: 42710
Context: SQL statement "SELECT dblink_connect('myconnect','dbname=postgres password=uzleuven')"
PL/pgSQL function "test_update_trigger" line 2 at perform'

This happens only in one of my two databases, anyone an idea?

Regards,
Jan