今天调试一个监控程序，放到环境里发现不写库，于是给SQL执行类异常事件做了个日志，发现报： ExecuteNonQuery requires an open and available Connection. The connection s current state is closed. 左看右看，没问题呀，后来才想起，using里没有执行db.Open，打开数据库连接。 ...
2012-08-17 23:50 0 4125 推荐指数：
Failed to validate connection com.mysql.jdbc.JDBC4Connection@75dc8e4c (No operations allowed after connection closed.). Possibly consider using ...
今天用NodeJS连接Mysql时遇到点折磨人的问题，记录下解决方法。 NodeJS和Mysql都已经正确安装了，但是NodeJS和Mysql的连接出现问题，查找网上一些解决办法都不能解决问题。报错 ...
2016-04-13 09:23:38.755 18850 INFO oslo.messaging._drivers.impl_rabbit [req-fafc8542-9403-4b5a-89d2- ...
ERROR - No operations allowed after connection closed. 2011-12-07 11:36:09 - ERROR - query failed ...
SpringBoot警告-springboot2.0 hikaricp - failed to valid... no operations allowed after connection closed. ——墨问苍生 首先在mysql中执行 ...
com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: No operations allowed after connection closed. ...
基础连接已经关闭: 连接被意外关闭。 基础连接已经关闭: 发送时发生错误 The underlying connection was closed: 在一个非套接字上尝试了一个操作。 防火墙问题。或是杀毒软件，卫士之类的。(360 卸载 ) ...
