org.springframework.transaction.CannotCreateTransactionException: Could not open JDBC Connection for transaction; nested exception is java.sql.SQLException: Cannot create PoolableConnectionFactory (Could not create connection to database server. Atte…
报错信息:Could not open JDBC Connection for transaction; nested exception is org.apache.commons.dbcp.SQLNestedException: Cannot create PoolableConnectionFactory (Could not create connection to database server.) 问题来源mysql-connecter-java 版本过低 如果你mysql的版本是m…
java项目连接jdbc报错:com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Could not create connection to database server 原因:相关jar包版本太低 解决方法:下载最新版的mysql-connector-java即可…
在运行"maven build"-->"tomcat:run"之后,报如下错误: com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Could not create connection to database server. at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)…
org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is org.apache.commons.dbcp.SQLNestedException: Cannot create PoolableConnectionFactory (Could not create connection to database server. Attempt…
原文博客链接地址:数据库open报错ORA-01555: snapshot too old 今天正在东莞蜜月的时候.一个学生说他管理的測试库出问题了,无法open,我们先来看看是什么问题: Recovery of Online Redo Log: Thread 1 Group 4 Seq 4 Reading mem 0 Mem# 0: /onlinelog/shr/redo04.log Completed redo application of 0.00MB Completed crash re…
报错信息: Lost connection to MySQL server at 解决方案: use mysql; ; flush privileges; 参考: https://blog.csdn.net/donglynn/article/details/37668873 原文链接: https://www.cnblogs.com/poterliu/p/11850786.html…
dotnetcore ef 调用多个数据库时用户命令执行操作报错 1.多个DbContext 时报错: 报错: More than one DbContext was found. Specify which one to use. Use the '-Context' parameter for PowerShell commands and the '--context' parameter for dotnet commands. 解决办法: dotnet ef migrations ad…