When running a backup on our server ( the fisrst onwing message:

Postgres subprocess ('/usr/bin/pg_dump', '--no-owner', '--username=odoo', '--host=localhost', '--port=5432', '--file=/tmp/tmpYlHWU3/dump.sql', u'Connectat') error 1

I Checked /etc/pwd there is a user odoo
I check odoo do have rights to /usr/bin/pg_dump

I checked odoo does have access to /tmp... 
We are using port    :8069and not   '--port=5432' .

Any suggestions?