Failed to validate connection com.mysql.jdbc.JDBC Connection dc e c No operations allowed after connection closed. . Possibly consider using a shorter maxLifetime value. 使用的是HikariDataSource。 应该是数据库的 ...
2020-03-25 18:56 0 871 推荐指数：
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. ...
问题 Mysql服务器默认的“wait_timeout”是8小时，也就是说一个connection空闲超过8个小时，Mysql将自动断开该connection。 可以用show global variables LIKE'wait_timeout';查看mysql的等待时间。 这就是问题 ...
原因分析 查看了Mysql的文档，以及Connector/J的文档以及在线说明发现，出现这种异常的原因是： Mysql服务器默认的“wait_timeout”是8小时，也就是说一个connection空闲超过8个小时，Mysql将自动断开该connection。这就是问题的所在，在C3P0 ...
异常信息 org.hibernate.exception.JDBCConnectionException: could not execute query at org.hibernate.e ...
### Error querying database. Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: No operations allowed after connection ...
