1 详细异常信息 ERROR yarn.ApplicationMaster: User class threw exception: java.sql.SQLException: Communications link failure The last packet successfully received from the server was 18,973 milliseconds ago. The last packet sent successfully to the server w…

1 详细异常 ser class threw exception: java.sql.SQLException: The last packet successfully received from the server was 39,444 milliseconds ago. The last packet sent successfully to the server was 39,444 milliseconds ago. is longer than the server configu…

数据库 没有开启  连接失败 org.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseco…

异常描述 这个异常通常有如下信息: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure The last packet successfully received from the server was 59,977 milliseconds ago. The last packet sent successfully to the server was 1 millisecon…

错误如下: 程序实现的功能是调用一个存储过程,但是不认这个存储过程的参数. 原因是版本太高了,由于使用的是6.0.6版本的,改成5.1.38即可. POM配置如下: <!-- mysql-connector-java --> <!-- http://mvnrepository.com/artifact/mysql/mysql-connector-java --> <dependency> <groupId>mysql</groupId> <…

1 详细异常信息 User class threw exception: java.sql.SQLException: Duplicate entry '2019-07-30 00:00:00-110100' for key 'dc' Query: update t_user_register_analyse set city_code = ?, city = ?, total_user_register_count = ?, day_user_register_count = ?, first…

博客分类: Oracle   Tomcat服务器下的应用连接Oracle时报错,出现以下异常: java.sql.SQLException: Io 异常: Got minus one from a read call 查询数据库连接情况: SQL> select username,count(username) from v$session where username is not null group by username; USERNAME                       C…

org.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: java.sql.SQLException: Error setting driver on UnpooledDataSource. Cause: java.lang.ClassNotFoundException: Cannot find class: ### The error may exist in mybatis\r…

今天在用junit测试mybits程序是遇到一个问题,报错为: org.apache.ibatis.exceptions.PersistenceException: ### Error querying database.  Cause: java.sql.SQLException: The server time zone value 'Öйú±ê׼ʱ¼ä' is unrecognized or represents more than one time zone. You must c…

最近在学习Mybatis,代码全部根据教程写好了,一运行结果报了一个错误,主要错误内容: Caused by: org.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: java.sql.SQLException: java.lang.ClassCastException: java.math.BigInteger cannot be cast to java.lang.Long…