I'm trying to create new database from postgres, because I am no longer able to do it from user interface. for that : 

I switched to openerp user, so as to be the owner of the new database freshly created.

I taped : createdb dbname - t template1

I'm getting the new database, but I cannot access it, with login : admin / pass : admin ( i did a select login,password from res_users to get this login's informations) , it tells me that there is no external_id : base.change_password

Is there something missing on createdb