mysql5中大数据错误：Packet for query is too large (1117260 > 1048576). You can change this value on the ser

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于 2016-04-05 17:35:29 发布

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在mysql5中遇到插入或更新大数据时出现错误：Packet for query is too large。该问题由mysql默认加载数据文件不超过1M引起。解决方案是通过修改my.cnf配置文件，增大`max_allowed_packet`的值，或者在命令行临时设置该变量，以允许插入或更新大数据。

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mysql5数据，插入或更新字段有大数据时（大于1M），会出现如下错误：

SEVERE: Servlet.service() for servlet [webs] in context with path [] threw exception [Request processing failed; nested exception is org.springframework.dao.TransientDataAccessResourceException: Hibernate flushing: Could not execute JDBC batch update; SQL [update t_article set (省略部分...)author_id=? where id=?]; Packet for query is too large (1117260 > 1048576). You can change this value on the server by setting the max_allowed_packet' variable.; nested exception is java.sql.BatchUpdateException: Packet for query is too large (1117260 > 1048576). You can change this v