针对你遇到的“datasource error: communications link failure the last packet sent successfully”错误,这是一个常见的数据库连接问题。下面我将按照你提供的tips逐一分析并给出可能的解决方案: 1. 确认完整的错误信息 首先,确保你获取了完整的错误信息。这个错误通常表明数据库连接在发送最后一个数据包后未能成功接收...
During a full migration or synchronization, an error is reported, and the log information is as follows: service DATAMOVE failed, cause by: Unable to connect to DBMS: url=jdbc:mysql://*** user=root, Caused by: Communications link failure The last packet sent successfully to the server was...
全量或增量阶段,DRS迁移或同步任务报错,日志提示信息:service %s failed, cause by: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
读取报错问题现象： 读取数据时，报错如下：Communications link failure The last packet successfully recei...
在使用Java连接MySQL数据库时,你可能会遇到"com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure, The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server."的错误。这个错误通常意味着Java应用程序无法连接到...
最近在监控线上日志时发现,时长会抛出如:com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure The last packet successfully received from the server was 4,977,174 milliseconds ago. The last packet sent successfully to the server was 1 milliseconds ago 异常信息,通常见到如...
wait_timeout=31536000 interactive_timeout=31536000 2、连接数据库的时候参数问题 如果使用mysql版本为5.7+,驱动Driver使用的是:com.msyql.cj.jdbc.Driver 那么你必须在连接url后面添加 useSSL=false 3、直接修改mysql的参数,不用重启 进入mysql的命令行或者客户端showglobalvariableslike'%wait_timeout%'; ...
aCommunications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. 通信线路失败最后小包成功地寄发到服务器是0毫秒前。 司机从服务器未收到任何小包。[translate]...
Communications link failure,The last packet successfully received from the server was***millisecond ago. The last packet successfully sent to the server was***millisecond ago。 其中错误还会提示你修改wait_timeout或是使用Connector/J的autoReconnect属性避免该错误。
jdbc:mysql://localhost:3306/database_name?useSSL=false&allowPublicKeyRetrieval=true 问题 使用JDBC 连接 MySQL 数据库时,出现如下错误: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. ...