we suddenly have an error in the cronjob.
error message:
a:4:{i:0;s:63:"SQLSTATE[HY000]: General error: 2006 MySQL server has gone away";i:1;s:1334:"#0 /html/magento/lib/Zend/Db/Adapter/Pdo/Abstract.php(305): PDO->beginTransaction()
<#1 /html/magento/lib/Zend/Db/Adapter/Abstract.php(495): Zend_Db_Adapter_Pdo_Abstract->_beginTransaction()
<#2 /html/magento/lib/Varien/Db/Adapter/Pdo/Mysql.php(219): Zend_Db_Adapter_Abstract->beginTransaction()
<#3 /html/magento/app/code/core/Mage/Core/Model/Resource/Abstract.php(76): Varien_Db_Adapter_Pdo_Mysql->beginTransaction()
<#4 /html/magento/app/code/core/Mage/Core/Model/Abstract.php(313): Mage_Core_Model_Resource_Abstract->beginTransaction()
<#5 /html/magento/app/code/community/Aoe/Scheduler/Model/Observer.php(112): Mage_Core_Model_Abstract->save()
…