迁移数据

Last update: Mon Jul 15 2024 00:00:00 GMT+0000 (Coordinated Universal Time)

主题：

创建对象：

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在开始之前，请执行以下步骤进行准备：

以文件系统所有者的身份登录到您的应用程序服务器。
更改到应用程序安装目录，或确保将其添加到您的系统PATH。

有关更多详细信息，请参阅首要步骤部分。

运行数据迁移命令

要开始迁移数据，请运行：

bin/magento migrate:data [-r|--reset] [-a|--auto] {<path to config.xml>}

其中：

[-a|--auto]是一个可选参数，当遇到完整性检查错误时，它可阻止停止迁移。
[-r|--reset]是从头开始迁移的可选参数。可以使用此参数测试迁移。
{<path to config.xml>}是config.xml的绝对文件系统路径；此参数是必需的

在此步骤中，Data Migration Tool为Magento1数据库中的迁移表创建其他表和触发器。它们在增量/增量迁移步骤中使用。其他表包含有关最终迁移执行后更改的记录的信息。数据库触发器用于填充这些额外的表，因此，如果正在对特定表执行新操作（添加/修改/删除记录），这些数据库触发器会将有关此操作的信息保存到额外的表中。当我们运行增量迁移过程时，Data Migration Tool会检查这些表中的未处理记录，并将必要的内容迁移到Magento2数据库中。

每个新表都包含：

m2_cl前缀
INSERT、UPDATE、DELETE事件触发器。

例如，对于sales_flat_order，Data Migration Tool创建：

m2_cl_sales_flat_order表：

code language-sql

code language-sql
CREATE TABLE `m2_cl_sales_flat_order` ( `entity_id` int(11) NOT NULL COMMENT 'Entity_id', `operation` text COMMENT 'Operation', `processed` tinyint(1) NOT NULL DEFAULT '0' COMMENT 'Processed', PRIMARY KEY (`entity_id`) ) COMMENT='m2_cl_sales_flat_order';

CREATE TABLE `m2_cl_sales_flat_order` (
  `entity_id` int(11) NOT NULL COMMENT 'Entity_id',
  `operation` text COMMENT 'Operation',
  `processed` tinyint(1) NOT NULL DEFAULT '0' COMMENT 'Processed',
  PRIMARY KEY (`entity_id`)
) COMMENT='m2_cl_sales_flat_order';

trg_sales_flat_order_after_insert、trg_sales_flat_order_after_update、trg_sales_flat_order_after_delete个触发器：

code language-sql

code language-sql
DELIMITER ;; CREATE TRIGGER `trg_sales_flat_order_after_insert` AFTER INSERT ON `sales_flat_order` FOR EACH ROW BEGIN INSERT INTO m2_cl_sales_flat_order (`entity_id`, `operation`) VALUES (NEW.entity_id, 'INSERT')ON DUPLICATE KEY UPDATE operation = 'INSERT'; END ;; DELIMITER ;; CREATE TRIGGER `trg_sales_flat_order_after_update` AFTER UPDATE ON `sales_flat_order` FOR EACH ROW BEGIN INSERT INTO m2_cl_sales_flat_order (`entity_id`, `operation`) VALUES (NEW.entity_id, 'UPDATE') ON DUPLICATE KEY UPDATE operation = 'UPDATE'; END ;; DELIMITER ;; CREATE TRIGGER `trg_sales_flat_order_after_delete` AFTER DELETE ON `sales_flat_order` FOR EACH ROW BEGIN INSERT INTO m2_cl_sales_flat_order (`entity_id`, `operation`) VALUES (OLD.entity_id, 'DELETE')ON DUPLICATE KEY UPDATE operation = 'DELETE'; END ;;

DELIMITER ;;
CREATE TRIGGER `trg_sales_flat_order_after_insert` AFTER INSERT ON `sales_flat_order`
  FOR EACH ROW
  BEGIN
   INSERT INTO m2_cl_sales_flat_order (`entity_id`, `operation`) VALUES (NEW.entity_id, 'INSERT')ON DUPLICATE KEY UPDATE operation = 'INSERT';
  END
;;

DELIMITER ;;
CREATE TRIGGER `trg_sales_flat_order_after_update` AFTER UPDATE ON `sales_flat_order`
  FOR EACH ROW
  BEGIN
   INSERT INTO m2_cl_sales_flat_order (`entity_id`, `operation`) VALUES (NEW.entity_id, 'UPDATE') ON DUPLICATE KEY UPDATE operation = 'UPDATE';
  END
;;

DELIMITER ;;
CREATE TRIGGER `trg_sales_flat_order_after_delete` AFTER DELETE ON `sales_flat_order`
  FOR EACH ROW
  BEGIN
   INSERT INTO m2_cl_sales_flat_order (`entity_id`, `operation`) VALUES (OLD.entity_id, 'DELETE')ON DUPLICATE KEY UPDATE operation = 'DELETE';
  END
;;

NOTE

Data Migration Tool在运行时保存其当前进度。如果出现错误或用户干预导致其停止运行，则工具会在上一次确认工作正常时恢复进度。要强制Data Migration Tool从头运行，请使用--reset参数。在这种情况下，建议您恢复Magento2数据库转储，以防止复制以前迁移的数据。

可能的一致性错误

运行时，Data Migration Tool可能会报告Magento1和Magento2数据库之间的不一致，并显示如下消息：

Source documents are missing: <EXTENSION_TABLE_1>,<EXTENSION_TABLE_2>,...<EXTENSION_TABLE_N>
Destination documents are missing: <EXTENSION_TABLE_1>,<EXTENSION_TABLE_2>,...<EXTENSION_TABLE_N>
Source documents are not mapped: <EXTENSION_TABLE_1>,<EXTENSION_TABLE_2>,...<EXTENSION_TABLE_N>
Destination documents are not mapped: <EXTENSION_TABLE_1>,<EXTENSION_TABLE_2>,...<EXTENSION_TABLE_N>
Source fields are missing. Document: <EXTENSION_TABLE>. Fields: <FIELD_1>,<FIELD_2>...<FIELD_N>
Destination fields are missing. Document: <EXTENSION_TABLE>. Fields: <FIELD_1>,<FIELD_2>...<FIELD_N>
Source fields are not mapped. Document: <EXTENSION_TABLE>. Fields: <FIELD_1>,<FIELD_2>...<FIELD_N>
Destination fields are not mapped. Document: <EXTENSION_TABLE>. Fields: <FIELD_1>,<FIELD_2>...<FIELD_N>
Mismatch of data types. Source document: <EXTENSION_TABLE>. Fields: <FIELD_1>,<FIELD_2>...<FIELD_N>
Mismatch of data types. Destination document: <EXTENSION_TABLE>. Fields: <FIELD_1>,<FIELD_2>...<FIELD_N>
Incompatibility in data. Source document: <EXTENSION_TABLE>. Field: <FIELD>. Error: <ERROR_MESSAGE>
Incompatibility in data. Destination document: <EXTENSION_TABLE>. Field: <FIELD>. Error: <ERROR_MESSAGE>

有关更多信息和建议，请参阅本指南的疑难解答部分。

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