SQLSTATE[HY000]: General error: 5 Out of memory (Needed 3353840 bytes)

#0 /home/henryhan/public_html/lib/Zend/Db/Statement.php(320): Zend_Db_Statement_Pdo->_execute(Array)
#1 /home/henryhan/public_html/lib/Zend/Db/Adapter/Abstract.php(468): Zend_Db_Statement->execute(Array)
#2 /home/henryhan/public_html/lib/Zend/Db/Adapter/Pdo/Abstract.php(238): Zend_Db_Adapter_Abstract->query('show tables', Array)
#3 /home/henryhan/public_html/lib/Varien/Db/Adapter/Pdo/Mysql.php(333): Zend_Db_Adapter_Pdo_Abstract->query('show tables', Array)
#4 /home/henryhan/public_html/lib/Zend/Db/Adapter/Abstract.php(745): Varien_Db_Adapter_Pdo_Mysql->query('show tables', Array)
#5 /home/henryhan/public_html/app/code/core/Mage/Core/Model/Mysql4/Session.php(112): Zend_Db_Adapter_Abstract->fetchAssoc('show tables')
#6 /home/henryhan/public_html/app/code/core/Mage/Core/Model/Mysql4/Session.php(122): Mage_Core_Model_Mysql4_Session->hasConnection()
#7 /home/henryhan/public_html/app/code/core/Mage/Core/Model/Session/Abstract/Varien.php(53): Mage_Core_Model_Mysql4_Session->setSaveHandler()
#8 /home/henryhan/public_html/app/code/core/Mage/Core/Model/Session/Abstract/Varien.php(155): Mage_Core_Model_Session_Abstract_Varien->start('frontend')
#9 /home/henryhan/public_html/app/code/core/Mage/Core/Model/Session/Abstract.php(84): Mage_Core_Model_Session_Abstract_Varien->init('core', 'frontend')
#10 /home/henryhan/public_html/app/code/core/Mage/Core/Model/Session.php(39): Mage_Core_Model_Session_Abstract->init('core', 'frontend')
#11 /home/henryhan/public_html/app/code/core/Mage/Core/Model/Config.php(1206): Mage_Core_Model_Session->__construct(Array)
#12 /home/henryhan/public_html/app/Mage.php(432): Mage_Core_Model_Config->getModelInstance('core/session', Array)
#13 /home/henryhan/public_html/app/Mage.php(446): Mage::getModel('core/session', Array)
#14 /home/henryhan/public_html/app/code/core/Mage/Core/Controller/Varien/Action.php(483): Mage::getSingleton('core/session', Array)
#15 /home/henryhan/public_html/app/code/core/Mage/Core/Controller/Front/Action.php(59): Mage_Core_Controller_Varien_Action->preDispatch()
#16 /home/henryhan/public_html/app/code/core/Mage/Core/Controller/Varien/Action.php(407): Mage_Core_Controller_Front_Action->preDispatch()
#17 /home/henryhan/public_html/app/code/core/Mage/Core/Controller/Varien/Router/Standard.php(254): Mage_Core_Controller_Varien_Action->dispatch('view')
#18 /home/henryhan/public_html/app/code/core/Mage/Core/Controller/Varien/Front.php(177): Mage_Core_Controller_Varien_Router_Standard->match(Object(Mage_Core_Controller_Request_Http))
#19 /home/henryhan/public_html/app/code/core/Mage/Core/Model/App.php(304): Mage_Core_Controller_Varien_Front->dispatch()
#20 /home/henryhan/public_html/app/Mage.php(597): Mage_Core_Model_App->run(Array)
#21 /home/henryhan/public_html/index.php(66): Mage::run()
#22 {main}