SQLSTATE[HY000]: General error: 23 Out of resources when opening file '/tmp/#sql_4ea_1.MYD' (Errcode: 24 - Too many open files), query was: DESCRIBE `catalog_product_entity`

#0 /var/www/vhosts/websitestatus.de/mah.de/lib/Varien/Db/Statement/Pdo/Mysql.php(110): Zend_Db_Statement_Pdo->_execute(Array)
#1 /var/www/vhosts/websitestatus.de/mah.de/app/code/core/Zend/Db/Statement.php(291): Varien_Db_Statement_Pdo_Mysql->_execute(Array)
#2 /var/www/vhosts/websitestatus.de/mah.de/lib/Zend/Db/Adapter/Abstract.php(480): Zend_Db_Statement->execute(Array)
#3 /var/www/vhosts/websitestatus.de/mah.de/lib/Zend/Db/Adapter/Pdo/Abstract.php(238): Zend_Db_Adapter_Abstract->query('DESCRIBE `catal...', Array)
#4 /var/www/vhosts/websitestatus.de/mah.de/lib/Varien/Db/Adapter/Pdo/Mysql.php(504): Zend_Db_Adapter_Pdo_Abstract->query('DESCRIBE `catal...', Array)
#5 /var/www/vhosts/websitestatus.de/mah.de/lib/Zend/Db/Adapter/Pdo/Mysql.php(171): Varien_Db_Adapter_Pdo_Mysql->query('DESCRIBE `catal...')
#6 /var/www/vhosts/websitestatus.de/mah.de/lib/Varien/Db/Adapter/Pdo/Mysql.php(1694): Zend_Db_Adapter_Pdo_Mysql->describeTable('catalog_product...', NULL)
#7 /var/www/vhosts/websitestatus.de/mah.de/app/code/core/Mage/Core/Model/Resource/Helper/Mysql4.php(294): Varien_Db_Adapter_Pdo_Mysql->describeTable('catalog_product...')
#8 /var/www/vhosts/websitestatus.de/mah.de/app/code/core/Mage/Catalog/Model/Resource/Product/Collection.php(1805): Mage_Core_Model_Resource_Helper_Mysql4->prepareColumnsList(Object(Varien_Db_Select))
#9 /var/www/vhosts/websitestatus.de/mah.de/app/code/core/Mage/Catalog/Model/Resource/Product/Collection.php(1758): Mage_Catalog_Model_Resource_Product_Collection->_productLimitationPrice()
#10 /var/www/vhosts/websitestatus.de/mah.de/app/code/core/Mage/Catalog/Model/Resource/Product/Collection.php(1849): Mage_Catalog_Model_Resource_Product_Collection->_productLimitationJoinPrice()
#11 /var/www/vhosts/websitestatus.de/mah.de/app/code/core/Mage/Catalog/Model/Resource/Product/Collection.php(1375): Mage_Catalog_Model_Resource_Product_Collection->_applyProductLimitations()
#12 /var/www/vhosts/websitestatus.de/mah.de/app/code/core/Mage/Catalog/Model/Resource/Product/Collection.php(1219): Mage_Catalog_Model_Resource_Product_Collection->addPriceData()
#13 /var/www/vhosts/websitestatus.de/mah.de/app/code/core/Mage/Catalog/Model/Layer.php(120): Mage_Catalog_Model_Resource_Product_Collection->addMinimalPrice()
#14 /var/www/vhosts/websitestatus.de/mah.de/app/code/core/Mage/Catalog/Model/Layer.php(103): Mage_Catalog_Model_Layer->prepareProductCollection(Object(Mage_Catalog_Model_Resource_Product_Collection))
#15 /var/www/vhosts/websitestatus.de/mah.de/app/code/local/Amasty/Shopby/Block/Catalog/Layer/View.php(227): Mage_Catalog_Model_Layer->getProductCollection()
#16 /var/www/vhosts/websitestatus.de/mah.de/app/code/core/Mage/Catalog/Block/Layer/View.php(122): Amasty_Shopby_Block_Catalog_Layer_View->_getFilterableAttributes()
#17 /var/www/vhosts/websitestatus.de/mah.de/app/code/local/Amasty/Shopby/Block/Catalog/Layer/View.php(444): Mage_Catalog_Block_Layer_View->_prepareLayout()
#18 /var/www/vhosts/websitestatus.de/mah.de/app/code/core/Mage/Core/Block/Abstract.php(293): Amasty_Shopby_Block_Catalog_Layer_View->_prepareLayout()
#19 /var/www/vhosts/websitestatus.de/mah.de/app/code/core/Mage/Core/Model/Layout.php(456): Mage_Core_Block_Abstract->setLayout(Object(Mage_Core_Model_Layout))
#20 /var/www/vhosts/websitestatus.de/mah.de/app/code/core/Mage/Core/Model/Layout.php(472): Mage_Core_Model_Layout->createBlock('amshopby/catalo...', 'amshopby.navlef...')
#21 /var/www/vhosts/websitestatus.de/mah.de/app/code/core/Mage/Core/Model/Layout.php(239): Mage_Core_Model_Layout->addBlock('amshopby/catalo...', 'amshopby.navlef...')
#22 /var/www/vhosts/websitestatus.de/mah.de/app/code/core/Mage/Core/Model/Layout.php(205): Mage_Core_Model_Layout->_generateBlock(Object(Mage_Core_Model_Layout_Element), Object(Mage_Core_Model_Layout_Element))
#23 /var/www/vhosts/websitestatus.de/mah.de/app/code/core/Mage/Core/Model/Layout.php(210): Mage_Core_Model_Layout->generateBlocks(Object(Mage_Core_Model_Layout_Element))
#24 /var/www/vhosts/websitestatus.de/mah.de/app/code/core/Mage/Core/Controller/Varien/Action.php(344): Mage_Core_Model_Layout->generateBlocks()
#25 /var/www/vhosts/websitestatus.de/mah.de/app/code/core/Mage/Catalog/controllers/CategoryController.php(148): Mage_Core_Controller_Varien_Action->generateLayoutBlocks()
#26 /var/www/vhosts/websitestatus.de/mah.de/app/code/core/Mage/Core/Controller/Varien/Action.php(418): Mage_Catalog_CategoryController->viewAction()
#27 /var/www/vhosts/websitestatus.de/mah.de/app/code/core/Mage/Core/Controller/Varien/Router/Standard.php(254): Mage_Core_Controller_Varien_Action->dispatch('view')
#28 /var/www/vhosts/websitestatus.de/mah.de/app/code/core/Mage/Core/Controller/Varien/Front.php(172): Mage_Core_Controller_Varien_Router_Standard->match(Object(Mage_Core_Controller_Request_Http))
#29 /var/www/vhosts/websitestatus.de/mah.de/app/code/core/Mage/Core/Model/App.php(365): Mage_Core_Controller_Varien_Front->dispatch()
#30 /var/www/vhosts/websitestatus.de/mah.de/app/Mage.php(684): Mage_Core_Model_App->run(Array)
#31 /var/www/vhosts/websitestatus.de/mah.de/index.php(83): Mage::run('mah', 'website')
#32 {main}