Erro ao inserir dados no Zend_Db

Ajuda com este erro, ele aconteceu quando ei fazer um teste de inserçao de dados ai esta o exemplo e o erro:

 include_once APPLICATION_PATH . '/models/Clientes.php';
 $clientes = new Clientes();
 $clientes->insert(array("cpf"=>"65f465as4f654as6", "senha"=>"654f6a4f64as"));

Exception information:

Message: SQLSTATE[08006] [7] invalid connection option "adapter"
Stack trace:

#0 C:\Program Files\Apache2.2\htdocs\ZF\library\Zend\Db\Adapter\Pdo\Pgsql.php(87): Zend_Db_Adapter_Pdo_Abstract->_connect()
#1 C:\Program Files\Apache2.2\htdocs\ZF\library\Zend\Db\Adapter\Abstract.php(832): Zend_Db_Adapter_Pdo_Pgsql->_connect()
#2 C:\Program Files\Apache2.2\htdocs\ZF\library\Zend\Db\Adapter\Pdo\Pgsql.php(171): Zend_Db_Adapter_Abstract->quote('clientes')
#3 C:\Program Files\Apache2.2\htdocs\ZF\library\Zend\Db\Table\Abstract.php(823): Zend_Db_Adapter_Pdo_Pgsql->describeTable('clientes', NULL)
#4 C:\Program Files\Apache2.2\htdocs\ZF\library\Zend\Db\Table\Abstract.php(866): Zend_Db_Table_Abstract->_setupMetadata()
#5 C:\Program Files\Apache2.2\htdocs\ZF\library\Zend\Db\Table\Abstract.php(1024): Zend_Db_Table_Abstract->_setupPrimaryKey()
#6 C:\Program Files\Apache2.2\htdocs\ZF\application\modules\default\controllers\IndexController.php(16): Zend_Db_Table_Abstract->insert(Array)
#7 C:\Program Files\Apache2.2\htdocs\ZF\library\Zend\Controller\Action.php(513): IndexController->indexAction()
#8 C:\Program Files\Apache2.2\htdocs\ZF\library\Zend\Controller\Dispatcher\Standard.php(289): Zend_Controller_Action->dispatch('indexAction')
#9 C:\Program Files\Apache2.2\htdocs\ZF\library\Zend\Controller\Front.php(946): Zend_Controller_Dispatcher_Standard->dispatch(Object(Zend_Controller_Request_Http), Object(Zend_Controller_Response_Http))
#10 C:\Program Files\Apache2.2\htdocs\ZF\library\Zend\Application\Bootstrap\Bootstrap.php(77): Zend_Controller_Front->dispatch()
#11 C:\Program Files\Apache2.2\htdocs\ZF\library\Zend\Application.php(358): Zend_Application_Bootstrap_Bootstrap->run()
#12 C:\Program Files\Apache2.2\htdocs\ZF\public\index.php(24): Zend_Application->run()
#13 {main}