The last packet successfully received from the server was 55,404,563 millise 方案1 定时器 方案2 修改连接池容量 mysql5 数据库连接丢失问题,autoReconnect=true不起作用 //todo...…

最近在使用spring-jdbc数据库连接管理时,出现一个奇怪问题,当天部署运行没问题,第二天再试就报以下异常问题 org.springframework.dao.RecoverableDataAccessException: PreparedStatementCallback; SQL []; The last packet successfully received from the server was 56,799,849 milliseconds ago. The last packe…

1,问题现象: com.mysql.jdbc.CommunicationsException: The last packet successfully received from the server was58129 seconds ago.The last packet sent successfully to the server was 58129 seconds ago, which is longer than the server configured value of 'wai…

如果连接闲置8小时 (8小时内没有进行数据库操作), mysql就会自动断开连接, 要重启tomcat. 不用hibernate的话, connection url加参数: autoReconnect=true 用hibernate的话, 加如下属性: <property name="connection.autoReconnect">true</property> <property name="connection.autoReconnect…

com.mysql.jdbc.CommunicationsException: The last packet successfully received from the server was58129 seconds ago.The last packet sent successfully to the server was 58129 seconds ago, which is longer than the server configured value of 'wait_timeou…

1.过程 同事按照文档上配置了下面的jdbc url: jdbc:mysql://ip:port/db?autoReconnect=true&useUnicode=true&characterEncoding=utf-8 结果导致了 mysql slow log 出现了满屏的 ping 命令, # User@Host: db[db] @ [ip] # Query_time: 0.000017 Lock_time: 0.000000 Rows_sent: 0 Rows_examined: 0…

<!--  dataSource加参数    处理mysql 8小时自动断开连接的问题 --> <property name="testWhileIdle" value="true"></property> <property name="testOnBorrow" value="false"></property> <property name="t…

即使在创建Mysql时url中加入了autoReconnect=true参数,一但这个连接两次访问数据库的时间超出了服务器端wait_timeout的时间限制,还是会CommunicationsException: The last packet successfully received from the server was xxx milliseconds ago. 服务器端的参数可以用 show global variables like 'wait_timeout'; set glob…

问题 在Django中使用mysql偶尔会出现数据库连接丢失的情况,错误通常有如下两种 1. OperationalError: (2006, 'MySQL server has gone away') 1. OperationalError: (2013, 'Lost connection to MySQL server during query') 查询mysql全局变量SHOW GLOBAL VARIABLES;可以看到wait_timeout,此变量表示连接空闲时间.如果客户端使用一个连…

如下配置 jdbc.url=jdbc:mysql://127.0.0.1:3306/chubb_2?autoReconnect=true&useUnicode=true&characterEncoding=UTF-8&allowMultiQueries=true allowMultiQueries=true参数的作用: ①可以在sql语句后携带分号,实现多语句执行. 如:mybatis的mapper.xml文件 <select id="getAll" re…