当你遇到“can not read response from server. expected to read 4 bytes, read 0 bytes before connection was unexpectedly lost”这样的错误时,这通常指示在客户端尝试从服务器读取数据时,连接意外中断了,而没有成功读取到预期的数据量。这个问题可能由多种原因引起,以下是一些可能的原因和相应的解决步骤: 1....
全量或增量阶段,DRS迁移或同步任务报错,日志提示信息:service LOGMANAGER failed, cause by: Can not read response from server. Expected to read 4 bytes, read 0 bytes before connection was unexpectedly lost. 可能原因 DRS迁移实例和源数据库之间的网络带宽太小或不稳定。
MESSAGE: Can not read responsefromserver. Expected to read 4 bytes, read 0 bytes before connection was unexpectedly lost. 改了jdbc驱动也不好使。。。 最后找到网上的方法。。是因为mysql的wait_timeout。。参数不对。是480.。写成28800就好了。
数据库连接超时Caused by: java.io.EOFException: Can not read response from server. Expected to read 4 bytes, read 0 bytes before connection was unexpectedly lost. 错误分析: 数据库连接已经关闭或者失效后仍然在执行操作,导致:mysql服务没返回数据 1.客户端连接池中连接,已经失效;但是:连接池还没有检测到...
System information: Operating system (distribution) and version: Pop_OS! (Debian 20.10) DBeaver version: 21.0.2 Additional extensions: None Connection specification: Database name and version: mysql 8.0.22 Driver name: MySQL , com.mysql...
全量或增量阶段,DRS迁移或同步任务报错,日志提示信息:service LOGMANAGER failed, cause by: Can not read response from server. Expected to read 4 bytes, read 0 bytes before connection was unexpecte
Caused by: java.io.EOFException: Can not read response from server. Expected to read 4 bytes, read 0 bytes before connection was unexpectedly lost. at com.mysql.jdbc.MysqlIO.readFully(MysqlIO.java:2502) at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:2952) ...
configured valuesforclient timeouts,orusingthe Connector/Jconnection property'autoReconnect=true'to avoidthisproblem.Causedby:java.io.EOFException:Cannot read responsefromserver.Expectedto read4bytes,read0bytes before connection was unexpectedly lost.
Caused by: java.io.EOFException: Can not read response from server. Expected to read 4 bytes, read 0 bytes before connection was unexpectedly lost. at com.mysql.jdbc.MysqlIO.readFully(MysqlIO.java:3004) ~[mysql-connector-java-5.1.39.jar!/:5.1.39] ...
java.io.EOFException: Can not read response from server. Expected to read 4 bytes, 新上线的区域病例系统,在阿里云环境间断性的出错 查看后台微服务日志,发现访问数据库偶尔会出现异常: 测试环境和开发环境都没这个错误 经过查询,应该是连接池的连接一段时间没有活动筋骨,mysql服务端会单方面断开这个连接。客户...