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org.hibernate.HibernateException: No Session found for current thread
com.mchange.v2.resourcepool.CannotAcquireResourceException: A ResourcePool could not acquire a resource from its primary factory or source.	at com.mchange.v2.resourcepool.BasicResourcePool.awaitAvailable(BasicResourcePool.java:1319)	at com.mchange.v2.resourcepool.BasicResourcePool.prelimCheckoutResource(BasicResourcePool.java:557)	at com.mchange.v2.resourcepool.BasicResourcePool.checkoutResource(BasicResourcePool.java:477)	at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool.checkoutPooledConnection(C3P0PooledConnectionPool.java:525)	at com.mchange.v2.c3p0.impl.AbstractPoolBackedDataSource.getConnection(AbstractPoolBackedDataSource.java:128)	at org.hibernate.service.jdbc.connections.internal.DatasourceConnectionProviderImpl.getConnection(DatasourceConnectionProviderImpl.java:141)	at org.hibernate.internal.AbstractSessionImpl$NonContextualJdbcConnectionAccess.obtainConnection(AbstractSessionImpl.java:277)	at org.hibernate.engine.jdbc.internal.LogicalConnectionImpl.obtainConnection(LogicalConnectionImpl.java:297)	at org.hibernate.engine.jdbc.internal.LogicalConnectionImpl.getConnection(LogicalConnectionImpl.java:169)	at org.hibernate.engine.transaction.internal.jdbc.JdbcTransaction.doBegin(JdbcTransaction.java:67)	at org.hibernate.engine.transaction.spi.AbstractTransactionImpl.begin(AbstractTransactionImpl.java:160)	at org.hibernate.internal.SessionImpl.beginTransaction(SessionImpl.java:1309)	at org.springframework.orm.hibernate4.HibernateTransactionManager.doBegin(HibernateTransactionManager.java:399)	at org.springframework.transaction.support.AbstractPlatformTransactionManager.getTransaction(AbstractPlatformTransactionManager.java:371)	at org.springframework.transaction.interceptor.TransactionAspectSupport.createTransactionIfNecessary(TransactionAspectSupport.java:335)	at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:105)	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)	at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)	at undefined.$Proxy12.signInUser(Unknown Source)	at com.myproject.managed.beans.UserManagedBean.signIn(UserManagedBean.java:58)	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 org.apache.el.parser.AstValue.invoke(AstValue.java:264)	at org.apache.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:278)	at com.sun.faces.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:105)	at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:88)	at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:102)	at javax.faces.component.UICommand.broadcast(UICommand.java:315)	at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:794)	at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1259)	at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:81)	at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)	at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)	at javax.faces.webapp.FacesServlet.service(FacesServlet.java:593)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:225)	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)	at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:927)	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1001)	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:585)	at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312)	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)	at java.lang.Thread.run(Thread.java:619)