Andrei Kabanov ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=557058%... ) *updated* an issue Hibernate ORM ( https://hibernate.atlassian.net/browse/HHH?atlOrigin=eyJpIjoiOTk3MTkxNGZj... ) / Bug ( https://hibernate.atlassian.net/browse/HHH-13791?atlOrigin=eyJpIjoiOTk3MT... ) HHH-13791 ( https://hibernate.atlassian.net/browse/HHH-13791?atlOrigin=eyJpIjoiOTk3MT... ) OSGi. Hibernate 5.4.10 with apache aries jpa error. ( https://hibernate.atlassian.net/browse/HHH-13791?atlOrigin=eyJpIjoiOTk3MT... ) Change By: Andrei Kabanov ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=557058%... ) You can see this problem there [https://github.com/akabanov57/apache-aries-jpa|https://github.com/akabano.... Go to jpa.test.db.test. When I use hibernate 5.4.10 in the specified environment, I have the following error: org.apache.aries.jpa.container \ [org.apache.aries.jpa.container.impl.DSFTracker] ERROR : Error creating DataSource for punit jpa.test.db org.hibernate.service.spi.ServiceException: Unable to create requested service \ [org.hibernate.engine.jdbc.env.spi.JdbcEnvironment] at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:275) at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:237) at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:214) at org.hibernate.id.factory.internal.DefaultIdentifierGeneratorFactory.injectServices(DefaultIdentifierGeneratorFactory.java:152) at org.hibernate.service.internal.AbstractServiceRegistryImpl.injectDependencies(AbstractServiceRegistryImpl.java:286) at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:243) at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:214) at org.hibernate.boot.internal.InFlightMetadataCollectorImpl.<init>(InFlightMetadataCollectorImpl.java:175) at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.complete(MetadataBuildingProcess.java:118) at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.metadata(EntityManagerFactoryBuilderImpl.java:1202) at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:1233) at org.hibernate.osgi.OsgiPersistenceProvider.createContainerEntityManagerFactory(OsgiPersistenceProvider.java:100) at org.apache.aries.jpa.container.impl.AriesEntityManagerFactoryBuilder.createAndPublishEMF(AriesEntityManagerFactoryBuilder.java:371) at org.apache.aries.jpa.container.impl.AriesEntityManagerFactoryBuilder.createEntityManagerFactory(AriesEntityManagerFactoryBuilder.java:183) at org.apache.aries.jpa.container.impl.AriesEntityManagerFactoryBuilder.dataSourceReady(AriesEntityManagerFactoryBuilder.java:538) at org.apache.aries.jpa.container.impl.AriesEntityManagerFactoryBuilder.foundDSF(AriesEntityManagerFactoryBuilder.java:475) at org.apache.aries.jpa.container.impl.DSFTracker.addingService(DSFTracker.java:84) at org.apache.aries.jpa.container.impl.DSFTracker.addingService(DSFTracker.java:1) at org.osgi.util.tracker.ServiceTracker$Tracked.customizerAdding(ServiceTracker.java:943) at org.osgi.util.tracker.ServiceTracker$Tracked.customizerAdding(ServiceTracker.java:871) at org.osgi.util.tracker.AbstractTracked.trackAdding(AbstractTracked.java:256) at org.osgi.util.tracker.AbstractTracked.trackInitial(AbstractTracked.java:183) at org.osgi.util.tracker.ServiceTracker.open(ServiceTracker.java:321) at org.osgi.util.tracker.ServiceTracker.open(ServiceTracker.java:264) at org.apache.aries.jpa.container.impl.AriesEntityManagerFactoryBuilder.<init>(AriesEntityManagerFactoryBuilder.java:99) at org.apache.aries.jpa.container.impl.PersistenceProviderTracker.addingService(PersistenceProviderTracker.java:88) at org.apache.aries.jpa.container.impl.PersistenceProviderTracker.addingService(PersistenceProviderTracker.java:1) at org.osgi.util.tracker.ServiceTracker$Tracked.customizerAdding(ServiceTracker.java:943) at org.osgi.util.tracker.ServiceTracker$Tracked.customizerAdding(ServiceTracker.java:871) at org.osgi.util.tracker.AbstractTracked.trackAdding(AbstractTracked.java:256) at org.osgi.util.tracker.AbstractTracked.track(AbstractTracked.java:229) at org.osgi.util.tracker.ServiceTracker$Tracked.serviceChanged(ServiceTracker.java:903) at org.apache.felix.framework.EventDispatcher.invokeServiceListenerCallback(EventDispatcher.java:990) at org.apache.felix.framework.EventDispatcher.fireEventImmediately(EventDispatcher.java:838) at org.apache.felix.framework.EventDispatcher.fireServiceEvent(EventDispatcher.java:545) at org.apache.felix.framework.Felix.fireServiceEvent(Felix.java:4833) at org.apache.felix.framework.Felix.registerService(Felix.java:3804) at org.apache.felix.framework.BundleContextImpl.registerService(BundleContextImpl.java:328) at org.apache.felix.framework.BundleContextImpl.registerService(BundleContextImpl.java:302) at org.hibernate.osgi.HibernateBundleActivator.start(HibernateBundleActivator.java:59) at org.apache.felix.framework.util.SecureAction.startActivator(SecureAction.java:698) at org.apache.felix.framework.Felix.activateBundle(Felix.java:2402) at org.apache.felix.framework.Felix.startBundle(Felix.java:2308) at org.apache.felix.framework.BundleImpl.start(BundleImpl.java:998) at aQute.launcher.Launcher.start(Launcher.java:632) at aQute.launcher.Launcher.startBundles(Launcher.java:612) at aQute.launcher.Launcher.activate(Launcher.java:516) at aQute.launcher.Launcher.launch(Launcher.java:361) at aQute.launcher.Launcher.run(Launcher.java:170) at aQute.launcher.Launcher.main(Launcher.java:148) at aQute.launcher.pre.EmbeddedLauncher.executeWithRunPath(EmbeddedLauncher.java:154) at aQute.launcher.pre.EmbeddedLauncher.findAndExecute(EmbeddedLauncher.java:119) at aQute.launcher.pre.EmbeddedLauncher.main(EmbeddedLauncher.java:48) Caused by: org.hibernate.boot.registry.classloading.spi.ClassLoadingException: Unable to load class \ [org.postgresql.Driver] at org.hibernate.boot.registry.classloading.internal.ClassLoaderServiceImpl.classForName(ClassLoaderServiceImpl.java:133) at org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl.loadDriverIfPossible(DriverManagerConnectionProviderImpl.java:149) at org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl.buildCreator(DriverManagerConnectionProviderImpl.java:105) at org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl.buildPool(DriverManagerConnectionProviderImpl.java:89) at org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl.configure(DriverManagerConnectionProviderImpl.java:73) at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.configureService(StandardServiceRegistryImpl.java:107) at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:246) at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:214) at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.buildJdbcConnectionAccess(JdbcEnvironmentInitiator.java:145) at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:66) at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:35) at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.initiateService(StandardServiceRegistryImpl.java:101) at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:263) ... 52 more Caused by: java.lang.ClassNotFoundException: Could not load requested class : org.postgresql.Driver at org.hibernate.boot.registry.classloading.internal.AggregatedClassLoader.findClass(AggregatedClassLoader.java:210) at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:588) at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521) at java.base/java.lang.Class.forName0(Native Method) at java.base/java.lang.Class.forName(Class.java:416) at org.hibernate.boot.registry.classloading.internal.ClassLoaderServiceImpl.classForName(ClassLoaderServiceImpl.java:130) ... 64 more ( https://hibernate.atlassian.net/browse/HHH-13791#add-comment?atlOrigin=ey... ) Add Comment ( 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