Kdjykuj

While creating an invoice from Magento backend I got the error message -

Cannot save Shipment 

And in the exception I got this this--

PDOException: There is no active transaction in `/home/mag/public_html/vendor/magento/zendframework1/library/Zend/Db/Adapter/Pdo/Abstract.php:316`

    Stack trace:

    `0` `/home/mag/public_html/vendor/magento/zendframework1/library/Zend/Db/Adapter/Pdo/Abstract.php(316): PDO->commit()`

`1``/home/mag/public_html/vendor/magento/zendframework1/library/Zend/Db/Adapter/Abstract.php(510): Zend_Db_Adapter_Pdo_Abstract->_commit()

2 /home/mag/public_html/vendor/magento/framework/DB/Adapter/Pdo/Mysql.php(253): Zend_Db_Adapter_Abstract->commit()

3 /home/mag/public_html/vendor/magento/framework/Model/ResourceModel/AbstractResource.php(74): MagentoFrameworkDBAdapterPdoMysql->commit()`



4 /home/mag/public_html/var/generation/Magento/Sales/Model/ResourceModel/Order/Interceptor.php(323): MagentoFrameworkModelResourceModelAbstractResource->commit()



5 /home/mag/public_html/vendor/magento/framework/DB/Transaction.php(57): MagentoSalesModelResourceModelOrderInterceptor->commit()



6 /home/mag/public_html/vendor/magento/framework/DB/Transaction.php(147): MagentoFrameworkDBTransaction->_commitTransaction()



7 /home/mag/public_html/vendor/magento/module-shipping/Controller/Adminhtml/Order/Shipment/Save.php(79): MagentoFrameworkDBTransaction->save()

Answered by shaktivelp

This issue still exists with the magento2.2.2 configurable product with child simple. And the below exception has been generated.

[2018-07-13 06:10:17] main.CRITICAL: Notice: Array to string conversion in /var/www/html/magento2/vendor/magento/framework/DB/Adapter/Pdo/Mysql.php on line 2999 {"exception":"[object] (Exception(code: 0): Notice: Array to string conversion in /var/www/html/magento2/vendor/magento/framework/DB/Adapter/Pdo/Mysql.php on line 2999 at /var/www/html/magento2/vendor/magento/framework/App/ErrorHandler.php:61)"} .

Kindly check about it and give me some updates.

For now i had added this as an fix:(/vendor/magento/framework/DB/Adapter/Pdo/Mysql.php)

    case 'longtext':

        if (is_array($value)) {

            $value = json_encode($value);

        }

        $value  = (string)$value;

        if ($column['NULLABLE'] && $value == '') {

            $value = null;

        }

        break;