org.hibernate.exception.GenericJDBCException: Cannot open connection at org.hibernate.exception.SQLStateConverter.handledNonSpecificException(SQLStateConverter.java:82) at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:70) at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:43) at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:29) at org.hibernate.jdbc.ConnectionManager.openConnection(ConnectionManager.java:301) at org.hibernate.jdbc.ConnectionManager.getConnection(ConnectionManager.java:110) at org.hibernate.jdbc.JDBCContext.connection(JDBCContext.java:137) at org.hibernate.transaction.JDBCTransaction.begin(JDBCTransaction.java:49) at org.hibernate.transaction.JDBCTransactionFactory.beginTransaction(JDBCTransactionFactory.java:24) at org.hibernate.jdbc.JDBCContext.beginTransaction(JDBCContext.java:271) at org.hibernate.impl.SessionImpl.beginTransaction(SessionImpl.java:1079) at de.zent.tm.pers.dao.HbTxnContext.(HbTxnContext.java:30) at de.zent.tm.pers.dao.HbTxnContext.(HbTxnContext.java:20) at de.zent.tm.pers.delegate.TxnBoundedServiceCommand.(TxnBoundedServiceCommand.java:11) at de.zent.tm.teservice.squad.SquadLogicCommand.(SquadLogicCommand.java:45) at de.zent.tm.teservice.squad.SquadLogic.getSquadGOIntern(SquadLogic.java:106) at de.zent.tm.teservice.squad.SquadLogic.getSquadGO(SquadLogic.java:89) at de.zent.tm.teservice.squad.SquadLogic.getSquadGO(SquadLogic.java:83) at de.zent.tm.teservice.logic.TeServiceImpl.getSquadGO(TeServiceImpl.java:1807) at de.zent.tm.teservice.server.TeServiceRemoteImpl.getSquadGO(TeServiceRemoteImpl.java:491) at sun.reflect.GeneratedMethodAccessor102.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:357) at sun.rmi.transport.Transport$1.run(Transport.java:200) at sun.rmi.transport.Transport$1.run(Transport.java:197) at java.security.AccessController.doPrivileged(Native Method) at sun.rmi.transport.Transport.serviceCall(Transport.java:196) at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:573) at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:835) at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$0(TCPTransport.java:688) at java.security.AccessController.doPrivileged(Native Method) at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:687) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) at sun.rmi.transport.StreamRemoteCall.exceptionReceivedFromServer(StreamRemoteCall.java:283) at sun.rmi.transport.StreamRemoteCall.executeCall(StreamRemoteCall.java:260) at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:161) at de.zent.tm.teservice.server.TeServiceRemoteImpl_Stub.getSquadGO(Unknown Source) at de.zent.tm.teservice.client.TeServiceRemoteWrapper.getSquadGO(TeServiceRemoteWrapper.java:712) at de.zent.tm.teservice.client.TeServiceGate.getSquadGO(TeServiceGate.java:929) at de.zent.tm.web.tabmat.MatchDetailsCommand.execute(MatchDetailsCommand.java:45) at de.zent.web.FrontController.processRequest(FrontController.java:120) at de.zent.web.FrontController.doGet(FrontController.java:189) at javax.servlet.http.HttpServlet.service(HttpServlet.java:635) at javax.servlet.http.HttpServlet.service(HttpServlet.java:742) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at de.zent.tm.web.TutorialFilter.doFilter(TutorialFilter.java:55) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at de.zent.tm.web.PermissionCheckFilter.doFilter(PermissionCheckFilter.java:65) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at de.zent.tm.web.BaseFilter.doFilter(BaseFilter.java:35) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:198) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:478) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:624) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:799) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:861) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1455) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLException: Connections could not be acquired from the underlying database! at com.mchange.v2.sql.SqlUtils.toSQLException(SqlUtils.java:106) at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool.checkoutPooledConnection(C3P0PooledConnectionPool.java:529) at com.mchange.v2.c3p0.impl.AbstractPoolBackedDataSource.getConnection(AbstractPoolBackedDataSource.java:128) at org.hibernate.connection.C3P0ConnectionProvider.getConnection(C3P0ConnectionProvider.java:35) at org.hibernate.jdbc.ConnectionManager.openConnection(ConnectionManager.java:298) at org.hibernate.jdbc.ConnectionManager.getConnection(ConnectionManager.java:110) at org.hibernate.jdbc.JDBCContext.connection(JDBCContext.java:137) at org.hibernate.transaction.JDBCTransaction.begin(JDBCTransaction.java:49) at org.hibernate.transaction.JDBCTransactionFactory.beginTransaction(JDBCTransactionFactory.java:24) at org.hibernate.jdbc.JDBCContext.beginTransaction(JDBCContext.java:271) at org.hibernate.impl.SessionImpl.beginTransaction(SessionImpl.java:1079) at de.zent.tm.pers.dao.HbTxnContext.(HbTxnContext.java:30) at de.zent.tm.pers.dao.HbTxnContext.(HbTxnContext.java:20) at de.zent.tm.pers.delegate.TxnBoundedServiceCommand.(TxnBoundedServiceCommand.java:11) at de.zent.tm.teservice.squad.SquadLogicCommand.(SquadLogicCommand.java:45) at de.zent.tm.teservice.squad.SquadLogic.getSquadGOIntern(SquadLogic.java:106) at de.zent.tm.teservice.squad.SquadLogic.getSquadGO(SquadLogic.java:89) at de.zent.tm.teservice.squad.SquadLogic.getSquadGO(SquadLogic.java:83) at de.zent.tm.teservice.logic.TeServiceImpl.getSquadGO(TeServiceImpl.java:1807) at de.zent.tm.teservice.server.TeServiceRemoteImpl.getSquadGO(TeServiceRemoteImpl.java:491) at sun.reflect.GeneratedMethodAccessor102.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:357) at sun.rmi.transport.Transport$1.run(Transport.java:200) at sun.rmi.transport.Transport$1.run(Transport.java:197) at java.security.AccessController.doPrivileged(Native Method) at sun.rmi.transport.Transport.serviceCall(Transport.java:196) at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:573) at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:835) at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$0(TCPTransport.java:688) at java.security.AccessController.doPrivileged(Native Method) at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:687) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) ... 1 more Caused by: 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) ... 34 more