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via GitHub by rfikki
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Could not open Hibernate Session for transaction; nested exception is org.hibernate.service.UnknownServiceException: Unknown service requested [org.hibernate.cache.spi.RegionFactory]
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Could not open Hibernate Session for transaction; nested exception is org.hibernate.exception.GenericJDBCException: Unable to acquire JDBC Connection
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Could not open Hibernate Session for transaction; nested exception is org.hibernate.exception.GenericJDBCException: Unable to acquire JDBC Connection
via Stack Overflow by Martin
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Could not open Hibernate Session for transaction; nested exception is java.lang.IllegalStateException: EntityManagerFactory is closed
org.hibernate.service.UnknownServiceException: Unknown service requested [org.hibernate.cache.spi.RegionFactory]	at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:184)	at org.hibernate.cfg.Settings.getRegionFactory(Settings.java:300)	at org.hibernate.internal.SessionFactoryImpl$SessionBuilderImpl.openSession(SessionFactoryImpl.java:1322)	at org.hibernate.internal.SessionFactoryImpl.openSession(SessionFactoryImpl.java:672)	at org.springframework.orm.hibernate5.HibernateTransactionManager.doBegin(HibernateTransactionManager.java:433)	at org.springframework.transaction.support.AbstractPlatformTransactionManager.getTransaction(AbstractPlatformTransactionManager.java:373)	at org.springframework.transaction.interceptor.TransactionAspectSupport.createTransactionIfNecessary(TransactionAspectSupport.java:427)	at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:276)	at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96)	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)	at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:655)	at com.jpmorgan.cakeshop.dao.BlockDAO$$EnhancerBySpringCGLIB$$480d1e3f.save()	at com.jpmorgan.cakeshop.db.SavingBlockListener.saveBlock(SavingBlockListener.java:109)	at com.jpmorgan.cakeshop.db.SavingBlockListener$BlockSaverThread.run(SavingBlockListener.java:48)