SQLSTATE[HY000] [1040] Too many connections

#0 /var/www/webshop-sassi/httpdocs/lib/Zend/Db/Adapter/Pdo/Mysql.php(96): Zend_Db_Adapter_Pdo_Abstract->_connect()
#1 /var/www/webshop-sassi/httpdocs/lib/Varien/Db/Adapter/Pdo/Mysql.php(320): Zend_Db_Adapter_Pdo_Mysql->_connect()
#2 /var/www/webshop-sassi/httpdocs/lib/Zend/Db/Adapter/Abstract.php(459): Varien_Db_Adapter_Pdo_Mysql->_connect()
#3 /var/www/webshop-sassi/httpdocs/lib/Zend/Db/Adapter/Pdo/Abstract.php(238): Zend_Db_Adapter_Abstract->query('SET NAMES utf8', Array)
#4 /var/www/webshop-sassi/httpdocs/lib/Varien/Db/Adapter/Pdo/Mysql.php(428): Zend_Db_Adapter_Pdo_Abstract->query('SET NAMES utf8', Array)
#5 /var/www/webshop-sassi/httpdocs/app/code/core/Mage/Core/Model/Resource.php(169): Varien_Db_Adapter_Pdo_Mysql->query('SET NAMES utf8')
#6 /var/www/webshop-sassi/httpdocs/app/code/core/Mage/Core/Model/Resource.php(110): Mage_Core_Model_Resource->_newConnection('pdo_mysql', Object(Mage_Core_Model_Config_Element))
#7 /var/www/webshop-sassi/httpdocs/app/code/core/Mage/Core/Model/Resource.php(199): Mage_Core_Model_Resource->getConnection('core_write')
#8 /var/www/webshop-sassi/httpdocs/app/code/core/Mage/Core/Model/Resource.php(97): Mage_Core_Model_Resource->_getDefaultConnection('eav_write')
#9 /var/www/webshop-sassi/httpdocs/app/code/core/Mage/Core/Model/Resource/Db/Abstract.php(320): Mage_Core_Model_Resource->getConnection('eav_write')
#10 /var/www/webshop-sassi/httpdocs/app/code/core/Mage/Core/Model/Resource/Db/Abstract.php(350): Mage_Core_Model_Resource_Db_Abstract->_getConnection('write')
#11 /var/www/webshop-sassi/httpdocs/app/code/core/Mage/Core/Model/Resource/Db/Abstract.php(335): Mage_Core_Model_Resource_Db_Abstract->_getWriteAdapter()
#12 /var/www/webshop-sassi/httpdocs/app/code/core/Mage/Core/Model/Resource/Db/Abstract.php(377): Mage_Core_Model_Resource_Db_Abstract->_getReadAdapter()
#13 /var/www/webshop-sassi/httpdocs/app/code/core/Mage/Eav/Model/Resource/Entity/Type.php(54): Mage_Core_Model_Resource_Db_Abstract->load(Object(Mage_Eav_Model_Entity_Type), 'order', 'entity_type_cod...')
#14 /var/www/webshop-sassi/httpdocs/app/code/core/Mage/Eav/Model/Entity/Type.php(100): Mage_Eav_Model_Resource_Entity_Type->loadByCode(Object(Mage_Eav_Model_Entity_Type), 'order')
#15 /var/www/webshop-sassi/httpdocs/app/code/core/Mage/Eav/Model/Config.php(324): Mage_Eav_Model_Entity_Type->loadByCode('order')
#16 /var/www/webshop-sassi/httpdocs/app/code/core/Mage/Eav/Model/Entity/Abstract.php(276): Mage_Eav_Model_Config->getEntityType('order')
#17 /var/www/webshop-sassi/httpdocs/app/code/core/Mage/Sales/Model/Entity/Order.php(41): Mage_Eav_Model_Entity_Abstract->setType('order')
#18 /var/www/webshop-sassi/httpdocs/app/code/core/Mage/Core/Model/Config.php(1348): Mage_Sales_Model_Entity_Order->__construct(Array)
#19 /var/www/webshop-sassi/httpdocs/app/Mage.php(462): Mage_Core_Model_Config->getModelInstance('sales_entity/or...', Array)
#20 /var/www/webshop-sassi/httpdocs/app/code/local/Aitoc/Aitquantitymanager/Model/ModuleObserver.php(26): Mage::getModel('sales_entity/or...')
#21 /var/www/webshop-sassi/httpdocs/app/code/local/Aitoc/Aitquantitymanager/Model/Rewrite/FrontCoreWebsite.php(20): Aitoc_Aitquantitymanager_Model_ModuleObserver->onAitocModuleLoad()
#22 /var/www/webshop-sassi/httpdocs/lib/Varien/Object.php(112): Aitoc_Aitquantitymanager_Model_Rewrite_FrontCoreWebsite->_construct()
#23 /var/www/webshop-sassi/httpdocs/app/code/core/Mage/Core/Model/Config.php(1348): Varien_Object->__construct(Array)
#24 /var/www/webshop-sassi/httpdocs/app/Mage.php(462): Mage_Core_Model_Config->getModelInstance('core/website', Array)
#25 /var/www/webshop-sassi/httpdocs/app/code/core/Mage/Core/Model/App.php(608): Mage::getModel('core/website')
#26 /var/www/webshop-sassi/httpdocs/app/code/core/Mage/Core/Model/App.php(466): Mage_Core_Model_App->_initStores()
#27 /var/www/webshop-sassi/httpdocs/app/code/core/Mage/Core/Model/App.php(349): Mage_Core_Model_App->_initCurrentStore('base', 'website')
#28 /var/www/webshop-sassi/httpdocs/app/Mage.php(683): Mage_Core_Model_App->run(Array)
#29 /var/www/webshop-sassi/httpdocs/index.php(584): Mage::run('base', 'website')
#30 {main}