创建DBLink----Oracle和mysql

Oracle：

DROP PUBLIC DATABASE LINK NM_HN;

CREATE PUBLIC DATABASE LINK NM_HN
CONNECT TO XZXT
IDENTIFIED BY <PWD>
USING '(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP) (HOST=10.184.17.3) (PORT=1521) )(CONNECT_DATA=(SERVICE_NAME=XZXT1)))';

mysql:

1、查看target端是否安装了FEDERATED存储引擎

mysql> show engines ;
+--------------------+---------+----------------------------------------------------------------+--------------+------+------------+
| Engine             | Support | Comment                                                        | Transactions | XA   | Savepoints |
+--------------------+---------+----------------------------------------------------------------+--------------+------+------------+
| CSV                | YES     | CSV storage engine                                             | NO           | NO   | NO         |
| MRG_MYISAM         | YES     | Collection of identical MyISAM tables                          | NO           | NO   | NO         |
| MyISAM             | YES     | MyISAM storage engine                                          | NO           | NO   | NO         |
| BLACKHOLE          | YES     | /dev/null storage engine (anything you write to it disappears) | NO           | NO   | NO         |
| MEMORY             | YES     | Hash based, stored in memory, useful for temporary tables      | NO           | NO   | NO         |
| FEDERATED          | NO      | Federated MySQL storage engine                                 | NULL         | NULL | NULL       |
| ARCHIVE            | YES     | Archive storage engine                                         | NO           | NO   | NO         |
| InnoDB             | DEFAULT | Supports transactions, row-level locking, and foreign keys     | YES          | YES  | YES        |
| PERFORMANCE_SCHEMA | YES     | Performance Schema                                             | NO           | NO   | NO         |
+--------------------+---------+----------------------------------------------------------------+--------------+------+------------+

注意：如果没有安装FEDERATED 引擎        执行install plugin federated soname 'ha_federated.so';

这里已经安装好了，只是没有启用

2、将federated添加到my.cnf 重启数据库
vi /etc/my.cnf
[mysqld]
federated

service mysql restart

mysql> show engines;
+--------------------+---------+----------------------------------------------------------------+--------------+------+------------+
| Engine             | Support | Comment                                                        | Transactions | XA   | Savepoints |
+--------------------+---------+----------------------------------------------------------------+--------------+------+------------+
| InnoDB             | DEFAULT | Supports transactions, row-level locking, and foreign keys     | YES          | YES  | YES        |
| MRG_MYISAM         | YES     | Collection of identical MyISAM tables                          | NO           | NO   | NO         |
| CSV                | YES     | CSV storage engine                                             | NO           | NO   | NO         |
| BLACKHOLE          | YES     | /dev/null storage engine (anything you write to it disappears) | NO           | NO   | NO         |
| MyISAM             | YES     | MyISAM storage engine                                          | NO           | NO   | NO         |
| MEMORY             | YES     | Hash based, stored in memory, useful for temporary tables      | NO           | NO   | NO         |
| ARCHIVE            | YES     | Archive storage engine                                         | NO           | NO   | NO         |
| PERFORMANCE_SCHEMA | YES     | Performance Schema                                             | NO           | NO   | NO         |
| FEDERATED          | YES     | Federated MySQL storage engine                                 | NO           | NO   | NO         |
+--------------------+---------+----------------------------------------------------------------+--------------+------+------------+

这里FEDERATED       引擎已经启用。

在目标数据库中，建立同步传输

目标端：

CREATE TABLE `t` (
  `SYSTEM_TYPE` varchar(100) DEFAULT NULL,
  `ORDER_DATE` int(6) DEFAULT NULL,
  `CUSTOMER_ID` varchar(40) DEFAULT NULL,
  `UBI_UID` varchar(40) DEFAULT NULL,
  `FOI_ORDERTIME` varchar(100) DEFAULT NULL,
  `FOI_ORDERNO` varchar(40) DEFAULT NULL,
  `FOI_KEY` varchar(2500) DEFAULT NULL,
  `FOI_KEYTYPE` varchar(40) DEFAULT NULL,
  `CODENAME` varchar(100) DEFAULT NULL,
  `ORDER_STATUS` varchar(20) DEFAULT NULL,
  `FOI_ORDERTYPE` varchar(60) DEFAULT NULL,
  `QYZM` int(11) DEFAULT NULL,
  `GDCZ` int(11) DEFAULT NULL,
  `GLRY` int(11) DEFAULT NULL,
  `QYDWTZ` int(11) DEFAULT NULL,
  `FRDWTZ` int(11) DEFAULT NULL,
  `FRZWRZ` int(11) DEFAULT NULL,
  `CXFR` int(11) DEFAULT NULL,
  `CXGD` int(11) DEFAULT NULL,
  `CXGG` int(11) DEFAULT NULL,
  `ORDER_TYPE` varchar(20) DEFAULT NULL,
  `DESC_INFO2` varchar(50) DEFAULT NULL
) ENGINE=federated connection = 'mysql://root:123456@192.168.1.5:3306/czb/F_ORDERINFO_DETAIL';

1. 注意：源端表结构 engine=federated connection = 'mysql://用户:密码@IP地址:端口/库名称/表名称';
2. 注意：数据库密码中不要有'@'、':'、'/'、‘.’等特殊字符