redirection as indicated in the tmcd_redirect table of the DB, which
says what DB name to contact for each node. That table looks like
this, as of this writing:

    CREATE TABLE tmcd_redirect (
      node_id varchar(10) NOT NULL default '',
      dbname tinytext NOT NULL default '',
      PRIMARY KEY  (node_id)
    ) TYPE=MyISAM;

On error, fall back to the main DB.