Hibernate将外来查询发送到数据库 [英] Hibernate sending alien queries to database

问题描述

我有一个由hibernate支持的Web应用程序.最近几天，我开始密切监视mysql，发现hibernate会将未知查询发送到数据库，而这些查询实际上并不是从应用程序的任何部分发送的.

I have a web application backed by hibernate. For last few days, I have started closely monitoring mysql and found that hibernate is sending unknown queries to the database which infact are not being sent from any part of app.

查询看起来像

|/* mysql-connector-java-5.1.6(修订:$ {svn.Revision})*/在变量名='l |

| /* mysql-connector-java-5.1.6 ( Revision: ${svn.Revision} ) */SHOW VARIABLES WHERE Variable_name ='l |

推荐答案

这与Hibernate或池化机制无关.建立连接后，此操作由驱动程序本身执行.驱动程序执行此操作以自行配置.参见 com.mysql.jdbc.ConnectionImpl.loadServerVariables()

This is not related to Hibernate or to the pooling mechanism. This is performed by the driver itself once a connection is made. The driver does that to configure itself. See the code in com.mysql.jdbc.ConnectionImpl.loadServerVariables()

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