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com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: No operations allowed after statement closed.	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)	at java.lang.reflect.Constructor.newInstance(Constructor.java:513)	at com.mysql.jdbc.Util.handleNewInstance(Util.java:411)	at com.mysql.jdbc.Util.getInstance(Util.java:386)	at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1014)	at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:988)	at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:974)	at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:919)	at com.mysql.jdbc.StatementImpl.checkClosed(StatementImpl.java:466)	at com.mysql.jdbc.StatementImpl.getMaxRows(StatementImpl.java:2221)	at com.mchange.v2.c3p0.impl.NewProxyPreparedStatement.getMaxRows(NewProxyPreparedStatement.java:1200)	at org.hibernate.jdbc.AbstractBatcher.closeQueryStatement(AbstractBatcher.java:298)	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.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:274)	at org.hibernate.loader.Loader.doList(Loader.java:2542)	at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2276)	at org.hibernate.loader.Loader.list(Loader.java:2271)	at org.hibernate.loader.custom.CustomLoader.list(CustomLoader.java:316)	at org.hibernate.impl.SessionImpl.listCustomQuery(SessionImpl.java:1842)	at org.hibernate.impl.AbstractSessionImpl.list(AbstractSessionImpl.java:165)	at org.hibernate.impl.SQLQueryImpl.list(SQLQueryImpl.java:157)	at com.liferay.portal.dao.orm.hibernate.SQLQueryImpl.list(SQLQueryImpl.java:116)	at com.liferay.portal.dao.orm.hibernate.SQLQueryImpl.list(SQLQueryImpl.java:107)	at com.liferay.portlet.journal.service.persistence.JournalArticleFinderImpl.findByExpirationDate(JournalArticleFinderImpl.java:366)	at com.liferay.portlet.journal.service.impl.JournalArticleLocalServiceImpl.checkArticlesByExpirationDate(JournalArticleLocalServiceImpl.java:2771)	at com.liferay.portlet.journal.service.impl.JournalArticleLocalServiceImpl.checkArticles(JournalArticleLocalServiceImpl.java:419)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)	at java.lang.reflect.Method.invoke(Method.java:597)	at com.liferay.portal.spring.aop.ServiceBeanMethodInvocation.proceed(ServiceBeanMethodInvocation.java:117)	at com.liferay.portal.spring.transaction.DefaultTransactionExecutor.execute(DefaultTransactionExecutor.java:62)	at com.liferay.portal.spring.transaction.TransactionInterceptor.invoke(TransactionInterceptor.java:52)	at com.liferay.portal.spring.aop.ServiceBeanMethodInvocation.proceed(ServiceBeanMethodInvocation.java:113)	at com.liferay.portal.spring.aop.ServiceBeanAopProxy.invoke(ServiceBeanAopProxy.java:218)	at $Proxy206.checkArticles(Unknown Source)	at com.liferay.portlet.journal.service.JournalArticleLocalServiceUtil.checkArticles(JournalArticleLocalServiceUtil.java:368)	at com.liferay.portlet.journal.messaging.CheckArticleMessageListener.doReceive(CheckArticleMessageListener.java:30)	at com.liferay.portal.kernel.messaging.BaseMessageListener.receive(BaseMessageListener.java:26)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)	at java.lang.reflect.Method.invoke(Method.java:597)	at com.liferay.portal.kernel.bean.ClassLoaderBeanHandler.invoke(ClassLoaderBeanHandler.java:67)	at $Proxy285.receive(Unknown Source)	at com.liferay.portal.kernel.scheduler.messaging.SchedulerEventMessageListenerWrapper.receive(SchedulerEventMessageListenerWrapper.java:76)	at com.liferay.portal.kernel.messaging.InvokerMessageListener.receive(InvokerMessageListener.java:72)	at com.liferay.portal.kernel.messaging.ParallelDestination$1.run(ParallelDestination.java:69)	at com.liferay.portal.kernel.concurrent.ThreadPoolExecutor$WorkerTask._runTask(ThreadPoolExecutor.java:678)	at com.liferay.portal.kernel.concurrent.ThreadPoolExecutor$WorkerTask.run(ThreadPoolExecutor.java:589)	at java.lang.Thread.run(Thread.java:662)