SQLSTATE[08004] [1040] Too many connections

#0 /var/www/vhosts/bykeservice.com/httpdocs/magento/lib/Zend/Db/Adapter/Pdo/Mysql.php(96): Zend_Db_Adapter_Pdo_Abstract->_connect()
#1 /var/www/vhosts/bykeservice.com/httpdocs/magento/lib/Varien/Db/Adapter/Pdo/Mysql.php(251): Zend_Db_Adapter_Pdo_Mysql->_connect()
#2 /var/www/vhosts/bykeservice.com/httpdocs/magento/lib/Zend/Db/Adapter/Abstract.php(448): Varien_Db_Adapter_Pdo_Mysql->_connect()
#3 /var/www/vhosts/bykeservice.com/httpdocs/magento/lib/Zend/Db/Adapter/Pdo/Abstract.php(238): Zend_Db_Adapter_Abstract->query('SET NAMES utf8', Array)
#4 /var/www/vhosts/bykeservice.com/httpdocs/magento/lib/Varien/Db/Adapter/Pdo/Mysql.php(333): Zend_Db_Adapter_Pdo_Abstract->query('SET NAMES utf8', Array)
#5 /var/www/vhosts/bykeservice.com/httpdocs/magento/app/code/core/Mage/Core/Model/Resource/Type/Db/Pdo/Mysql.php(45): Varien_Db_Adapter_Pdo_Mysql->query('SET NAMES utf8')
#6 /var/www/vhosts/bykeservice.com/httpdocs/magento/app/code/core/Mage/Core/Model/Resource.php(93): Mage_Core_Model_Resource_Type_Db_Pdo_Mysql->getConnection(Object(Mage_Core_Model_Config_Element))
#7 /var/www/vhosts/bykeservice.com/httpdocs/magento/app/code/core/Mage/Core/Model/Cache.php(402): Mage_Core_Model_Resource->getConnection('core_write')
#8 [internal function]: Mage_Core_Model_Cache->getDbAdapter()
#9 /var/www/vhosts/bykeservice.com/httpdocs/magento/lib/Varien/Cache/Backend/Database.php(95): call_user_func(Array)
#10 /var/www/vhosts/bykeservice.com/httpdocs/magento/lib/Varien/Cache/Backend/Database.php(139): Varien_Cache_Backend_Database->_getAdapter()
#11 /var/www/vhosts/bykeservice.com/httpdocs/magento/lib/Zend/Cache/Backend/TwoLevels.php(228): Varien_Cache_Backend_Database->load('981_CONFIG_GLOB...', false)
#12 /var/www/vhosts/bykeservice.com/httpdocs/magento/lib/Zend/Cache/Core.php(303): Zend_Cache_Backend_TwoLevels->load('981_CONFIG_GLOB...', false)
#13 /var/www/vhosts/bykeservice.com/httpdocs/magento/app/code/core/Mage/Core/Model/Cache.php(329): Zend_Cache_Core->load('CONFIG_GLOBAL.L...')
#14 /var/www/vhosts/bykeservice.com/httpdocs/magento/app/code/core/Mage/Core/Model/App.php(1052): Mage_Core_Model_Cache->load('config_global.l...')
#15 /var/www/vhosts/bykeservice.com/httpdocs/magento/app/code/core/Mage/Core/Model/Config.php(523): Mage_Core_Model_App->loadCache('config_global.l...')
#16 /var/www/vhosts/bykeservice.com/httpdocs/magento/app/code/core/Mage/Core/Model/Config.php(405): Mage_Core_Model_Config->_loadCache('config_global.l...')
#17 /var/www/vhosts/bykeservice.com/httpdocs/magento/app/code/core/Mage/Core/Model/Config.php(286): Mage_Core_Model_Config->_canUseCacheForInit()
#18 /var/www/vhosts/bykeservice.com/httpdocs/magento/app/code/core/Mage/Core/Model/App.php(359): Mage_Core_Model_Config->loadModulesCache()
#19 /var/www/vhosts/bykeservice.com/httpdocs/magento/app/code/core/Mage/Core/Model/App.php(295): Mage_Core_Model_App->_initModules()
#20 /var/www/vhosts/bykeservice.com/httpdocs/magento/app/Mage.php(596): Mage_Core_Model_App->run(Array)
#21 /var/www/vhosts/bykeservice.com/httpdocs/index.php(87): Mage::run('', 'store')
#22 {main}