Erro de aplicação

SQLSTATE[HY000] Unable to connect: Adaptive Server is unavailable or does not exist (severity 9)

Stack trace:

#0 /var/www/library/zend1.11.6/Zend/Db/Adapter/Pdo/Mssql.php(137): Zend_Db_Adapter_Pdo_Abstract->_connect()
#1 /var/www/library/zend1.11.6/Zend/Db/Adapter/Abstract.php(459): Zend_Db_Adapter_Pdo_Mssql->_connect()
#2 /var/www/library/zend1.11.6/Zend/Db/Adapter/Pdo/Abstract.php(238): Zend_Db_Adapter_Abstract->query('SELECT  *?     ...', Array)
#3 /var/www/application/business/Campeonato.php(179): Zend_Db_Adapter_Pdo_Abstract->query('SELECT  *?     ...')
#4 /var/www/application/business/Campeonato.php(32): Business_Campeonato->atualizaClassificacao(49, 1, 3)
#5 /var/www/application/modules/site/controllers/ParazaoController.php(20): Business_Campeonato->atualizarclassificacao(49)
#6 /var/www/library/zend1.11.6/Zend/Controller/Action.php(133): ParazaoController->init()
#7 /var/www/library/zend1.11.6/Zend/Controller/Dispatcher/Standard.php(268): Zend_Controller_Action->__construct(Object(Zend_Controller_Request_Http), Object(Zend_Controller_Response_Http), Array)
#8 /var/www/library/zend1.11.6/Zend/Controller/Front.php(954): Zend_Controller_Dispatcher_Standard->dispatch(Object(Zend_Controller_Request_Http), Object(Zend_Controller_Response_Http))
#9 /var/www/library/zend1.11.6/Zend/Application/Bootstrap/Bootstrap.php(97): Zend_Controller_Front->dispatch()
#10 /var/www/library/zend1.11.6/Zend/Application.php(366): Zend_Application_Bootstrap_Bootstrap->run()
#11 /var/www/html/libra.php(57): Zend_Application->run()
#12 {main}  

Request Parameters:

Fatal error: Call to a member function getParams() on a non-object in /var/www/application/modules/site/views/scripts/error/error.phtml on line 62