Caused by: java.sql.SQLException: Couldn't perform the operation commit

1、错误描述

Caused by: java.sql.SQLException: Couldn't perform the operation commit: You can't perform any operations on this connection. It has been 

automatically closed by Proxool for some reason (see logs).
	at org.logicalcobwebs.proxool.WrappedConnection.invoke(WrappedConnection.java:207)
	at org.logicalcobwebs.proxool.WrappedConnection.intercept(WrappedConnection.java:87)
	at $java.sql.Wrapper$$EnhancerByProxool$$753324fa.commit(<generated>)
	at org.hibernate.engine.transaction.internal.jdbc.JdbcTransaction.doCommit(JdbcTransaction.java:112)
	... 42 more

2、错误原因

     错误提示是：不能执行提交操作。

3、解决办法

     检查数据库是否正常连接