Hello all, I am having an issue on starting the rhn Webapp on Tomcat with Enterprise Linux 9. Can you give me some pointers on what to look at? I have partially bodged together my own Java jars... From what I can tell, this seems to be the only log entry (unless I am overlooking something): /var/log/tomcat/localhost.2022-10-17.log 17-Oct-2022 21:07:12.279 SEVERE [main] org.apache.catalina.core.StandardContext.listenerStart Exception sending context initialized event to listener instance of class [com.redhat.rhn.webapp.RhnServletListener] java.lang.NullPointerException at com.redhat.rhn.common.hibernate.AbstractConnectionManager.getSession(AbstractConnectionManager.java:258) at com.redhat.rhn.common.hibernate.HibernateFactory.getSession(HibernateFactory.java:352) at com.redhat.rhn.common.hibernate.HibernateFactory.listObjectsByNamedQuery(HibernateFactory.java:275) at com.redhat.rhn.common.hibernate.HibernateFactory.listObjectsByNamedQuery(HibernateFactory.java:220) at com.redhat.rhn.domain.reactor.SaltEventFactory.countSaltEvents(SaltEventFactory.java:55) at com.suse.manager.reactor.PGEventStream.<init>(PGEventStream.java:105) at com.suse.manager.webui.services.impl.SaltService.createEventStream(SaltService.java:579) at com.suse.manager.webui.services.impl.SaltService.createOrGetEventStream(SaltService.java:533) at com.suse.manager.webui.services.impl.SaltService.getEventStream(SaltService.java:587) at com.suse.manager.reactor.SaltReactor.connectToEventStream(SaltReactor.java:190) at com.suse.manager.reactor.SaltReactor.start(SaltReactor.java:161) at com.redhat.rhn.webapp.RhnServletListener.contextInitialized(RhnServletListener.java:130) at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4768) at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5230) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:726) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:698) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:696) at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:690) at org.apache.catalina.startup.HostConfig$DeployDescriptor.run(HostConfig.java:1889) at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515) at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) at java.base/java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:118) at org.apache.catalina.startup.HostConfig.deployDescriptors(HostConfig.java:583) at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:473) at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1618) at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:319) at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:123) at org.apache.catalina.util.LifecycleBase.setStateInternal(LifecycleBase.java:423) at org.apache.catalina.util.LifecycleBase.setState(LifecycleBase.java:366) at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:946) at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:835) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1396) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1386) at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) at java.base/java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:140) at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:919) at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:265) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) at org.apache.catalina.core.StandardService.startInternal(StandardService.java:432) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:930) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) at org.apache.catalina.startup.Catalina.start(Catalina.java:772) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:345) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:476) 17-Oct-2022 21:07:12.417 SEVERE [main] org.apache.catalina.core.StandardContext.listenerStop Exception sending context destroyed event to listener instance of class [com.redhat.rhn.webapp.RhnServletListener] java.lang.NullPointerException at com.redhat.rhn.common.hibernate.AbstractConnectionManager.close(AbstractConnectionManager.java:121) at com.redhat.rhn.common.hibernate.HibernateFactory.closeSessionFactory(HibernateFactory.java:92) at com.redhat.rhn.webapp.RhnServletListener.stopHibernate(RhnServletListener.java:107) at com.redhat.rhn.webapp.RhnServletListener.contextDestroyed(RhnServletListener.java:164) at org.apache.catalina.core.StandardContext.listenerStop(StandardContext.java:4816) at org.apache.catalina.core.StandardContext.stopInternal(StandardContext.java:5477) at org.apache.catalina.util.LifecycleBase.stop(LifecycleBase.java:257) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:187) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:726) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:698) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:696) at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:690) at org.apache.catalina.startup.HostConfig$DeployDescriptor.run(HostConfig.java:1889) at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515) at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) at java.base/java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:118) at org.apache.catalina.startup.HostConfig.deployDescriptors(HostConfig.java:583) at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:473) at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1618) at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:319) at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:123) at org.apache.catalina.util.LifecycleBase.setStateInternal(LifecycleBase.java:423) at org.apache.catalina.util.LifecycleBase.setState(LifecycleBase.java:366) at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:946) at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:835) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1396) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1386) at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) at java.base/java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:140) at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:919) at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:265) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) at org.apache.catalina.core.StandardService.startInternal(StandardService.java:432) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:930) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) at org.apache.catalina.startup.Catalina.start(Catalina.java:772) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:345) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:476) Thank you and best wishes, Stefan