The automatically generated config.php file has this section:

             'session' => array (
                    'sessionName'=>'LS-ZXOIOSPQSGOTEKWM'
                    // Uncomment the following lines if you need table-based sessions.
                    // Note: Table-based sessions are currently not supported on MSSQL server.
                    // 'class' => 'application.core.web.DbHttpSession',
                    // 'connectionID' => 'db',
                    // 'sessionTableName' => '{{sessions}}',
             ),

However, if you uncomment the lines under the note, there would be a missing comma between the 'sessionName' definition and the 'class' one