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    Expert tip

    Check if you're not creating unused SQL entities, as it might cause this exception.

javax.resource.ResourceException: Could not create connection at org.jboss.jca.adapters.jdbc.local.LocalManagedConnectionFactory.getLocalManagedConnection(LocalManagedConnectionFactory.java:277) at org.jboss.jca.adapters.jdbc.local.LocalManagedConnectionFactory.createManagedConnection(LocalManagedConnectionFactory.java:235) at org.jboss.jca.core.connectionmanager.pool.mcp.SemaphoreArrayListManagedConnectionPool.createConnectionEventListener(SemaphoreArrayListManagedConnectionPool.java:761) at org.jboss.jca.core.connectionmanager.pool.mcp.SemaphoreArrayListManagedConnectionPool.getConnection(SemaphoreArrayListManagedConnectionPool.java:343) at org.jboss.jca.core.connectionmanager.pool.AbstractPool.getSimpleConnection(AbstractPool.java:397) at org.jboss.jca.core.connectionmanager.pool.AbstractPool.getConnection(AbstractPool.java:365) at org.jboss.jca.core.connectionmanager.AbstractConnectionManager.getManagedConnection(AbstractConnectionManager.java:329) at org.jboss.jca.core.connectionmanager.tx.TxConnectionManagerImpl.getManagedConnection(TxConnectionManagerImpl.java:368) at org.jboss.jca.core.connectionmanager.AbstractConnectionManager.allocateConnection(AbstractConnectionManager.java:464) at org.jboss.jca.adapters.jdbc.WrapperDataSource.getConnection(WrapperDataSource.java:129) at org.hibernate.ejb.connection.InjectedDataSourceConnectionProvider.getConnection(InjectedDataSourceConnectionProvider.java:67)[hibernate-entitymanager-4.0.1.Final.jar:4.0.1.Final] at org.hibernate.engine.jdbc.internal.JdbcServicesImpl$ConnectionProviderJdbcConnectionAccess.obtainConnection(JdbcServicesImpl.java:253)[hibernate-core-4.0.1.Final.jar:4.0.1.Final] at org.hibernate.engine.jdbc.internal.JdbcServicesImpl.configure(JdbcServicesImpl.java:119)[hibernate-core-4.0.1.Final.jar:4.0.1.Final] at org.hibernate.service.internal.StandardServiceRegistryImpl.configureService(StandardServiceRegistryImpl.java:75)[hibernate-core-4.0.1.Final.jar:4.0.1.Final] at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:159)[hibernate-core-4.0.1.Final.jar:4.0.1.Final] at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:131)[hibernate-core-4.0.1.Final.jar:4.0.1.Final] at org.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:71)[hibernate-core-4.0.1.Final.jar:4.0.1.Final] at org.hibernate.cfg.Configuration.buildSettingsInternal(Configuration.java:2270)[hibernate-core-4.0.1.Final.jar:4.0.1.Final] at org.hibernate.cfg.Configuration.buildSettings(Configuration.java:2266)[hibernate-core-4.0.1.Final.jar:4.0.1.Final] at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1735)[hibernate-core-4.0.1.Final.jar:4.0.1.Final] at org.hibernate.ejb.EntityManagerFactoryImpl.<init>(EntityManagerFactoryImpl.java:84)[hibernate-entitymanager-4.0.1.Final.jar:4.0.1.Final] at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:904)[hibernate-entitymanager-4.0.1.Final.jar:4.0.1.Final] at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:889)[hibernate-entitymanager-4.0.1.Final.jar:4.0.1.Final] at org.hibernate.ejb.HibernatePersistence.createContainerEntityManagerFactory(HibernatePersistence.java:73)[hibernate-entitymanager-4.0.1.Final.jar:4.0.1.Final] at org.jboss.as.jpa.service.PersistenceUnitServiceImpl.createContainerEntityManagerFactory(PersistenceUnitServiceImpl.java:162)[jboss-as-jpa-7.1.1.Final.jar:7.1.1.Final] at org.jboss.as.jpa.service.PersistenceUnitServiceImpl.start(PersistenceUnitServiceImpl.java:85)[jboss-as-jpa-7.1.1.Final.jar:7.1.1.Final] at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:1811) at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1746) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)[rt.jar:1.7.0_79] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)[rt.jar:1.7.0_79] at java.lang.Thread.run(Thread.java:745)[rt.jar:1.7.0_79]Caused by: org.h2.jdbc.JdbcSQLException: Verbindung ist unterbrochen: "unexpected status 1308622848"Connection is broken: "unexpected status 1308622848" [90067-161] at org.h2.message.DbException.getJdbcSQLException(DbException.java:329) at org.h2.message.DbException.get(DbException.java:169) at org.h2.message.DbException.get(DbException.java:146) at org.h2.engine.SessionRemote.done(SessionRemote.java:553) at org.h2.engine.SessionRemote.initTransfer(SessionRemote.java:109) at org.h2.engine.SessionRemote.connectServer(SessionRemote.java:373) at org.h2.engine.SessionRemote.connectEmbeddedOrServer(SessionRemote.java:267) at org.h2.jdbc.JdbcConnection.<init>(JdbcConnection.java:110) at org.h2.jdbc.JdbcConnection.<init>(JdbcConnection.java:94) at org.h2.Driver.connect(Driver.java:72) at org.jboss.jca.adapters.jdbc.local.LocalManagedConnectionFactory.getLocalManagedConnection(LocalManagedConnectionFactory.java:249) ... 30 more