I post a query here I this error appears after running the hibernate query and I don't know what does it mean. So I rerun the query few minutes later, then I haven't the error but I wanna know how I get it and how to fix it.

WARN  com.mchange.v2.c3p0.impl.NewPooledConnection - [c3p0] A PooledConnection that has already signalled a Connection error is still in use!
WARN  com.mchange.v2.c3p0.impl.NewPooledConnection - [c3p0] Another error has occurred [ java.sql.SQLException: Invalid state, the Connection object is closed. ] which will not be reported to listeners!
java.sql.SQLException: Invalid state, the Connection object is closed.
    at net.sourceforge.jtds.jdbc.ConnectionJDBC2.checkOpen(ConnectionJDBC2.java:1713)
    at net.sourceforge.jtds.jdbc.ConnectionJDBC2.clearWarnings(ConnectionJDBC2.java:2020)
    at com.mchange.v2.c3p0.impl.NewProxyConnection.clearWarnings(NewProxyConnection.java:933)
    at org.hibernate.util.JDBCExceptionReporter.handleAndClearWarnings(JDBCExceptionReporter.java:71)
    at org.hibernate.util.JDBCExceptionReporter.logAndClearWarnings(JDBCExceptionReporter.java:49)
    at org.hibernate.jdbc.ConnectionManager.closeConnection(ConnectionManager.java:472)
    at org.hibernate.jdbc.ConnectionManager.aggressiveRelease(ConnectionManager.java:429)
    at org.hibernate.jdbc.ConnectionManager.afterStatement(ConnectionManager.java:304)
    at org.hibernate.jdbc.AbstractBatcher.closePreparedStatement(AbstractBatcher.java:572)
    at org.hibernate.jdbc.AbstractBatcher.closeStatement(AbstractBatcher.java:291)
    at org.hibernate.jdbc.AbstractBatcher.closeQueryStatement(AbstractBatcher.java:307)
    at org.hibernate.jdbc.AbstractBatcher.closeQueryStatement(AbstractBatcher.java:234)
    at org.hibernate.loader.Loader.getResultSet(Loader.java:1967)
    at org.hibernate.loader.Loader.doQuery(Loader.java:802)
    at org.hibernate.lo
java hibernate
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