欢迎您访问程序员文章站本站旨在为大家提供分享程序员计算机编程知识!
您现在的位置是: 首页  >  数据库

hibernate+mysql too many connections错误

程序员文章站 2022-06-04 16:11:20
...

hibernate+mysql too many connections异常 问题分析: 使用Hibernate连接MySQL,多次执行查询操作后会出现以下异常(执行查询的次数等于MySQL的max-connection参数的值): Data source rejected establishment of connection, message from server: "Too ma

hibernate+mysql too many connections异常

问题分析:

使用Hibernate连接MySQL,多次执行查询操作后会出现以下异常(执行查询的次数等于MySQL的max-connection参数的值):

Data source rejected establishment of connection,  message from server: "Too many connections"
org.hibernate.exception.JDBCConnectionException: Cannot open connection
 at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:74)
 at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:43)
 at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:29)
 at org.hibernate.jdbc.ConnectionManager.openConnectionCaused by: com.mysql.jdbc.exceptions.MySQLNonTransientConnectionException: Data source rejected establishment of connection,  message from server: "Too many connections"
 at com.mysql.jdbc.SQLError.createSQLException

?解决方法:

在执行完查询操作后,仅仅调用了session.close();来关闭session,而没有

调用factory.close();来关闭SessionFanctory。

二者都关闭后不再出现上述异常。