1.1.1  现象

导出的数据库在导入时，出现如下错误：

ERROR 1839 (HY000) at line 24: @@GLOBAL.GTID_PURGED can only be set when @@GLOBAL.GTID_MODE = ON.

1.1.2  原因

gtid_executed:

WHEN used WITH global scope, this variable contains a representation OF the SET OF ALL transactions that are logged IN the BINARY log.

WHEN used WITH SESSION scope, it contains a representation OF the SET OF transactions that are written TO the cache IN the CURRENT SESSION.

Issuing RESET MASTER causes the global VALUE (but NOT the SESSION VALUE) OF this variable TO be reset TO an empty string.

1.1.3  解决

dump的时候加上参数–gtid-mode=OFF，类似如下：

mysqldump -h1.1.1.1  -uuser   -ppassword   -P3306 mydb mytb –where "time <= cast('2014-04-03 16:00' as datetime)" –skip-lock-tables –default-character-set=utf8 –gtid-mode=OFF > mytb.txt

用MySQL Workbench导出时，需如下操作：

1、 打开高级配置：

     MySQL - ERROR 1839_normal

2、 配置-gtid-pruged参数为OFF

MySQL - ERROR 1839_微软雅黑_02 

然后导出就OK了。