java.lang.NullPointerException: This exception has no message.

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java.lang.NullPointerException:
at java.util.concurrent.ConcurrentHashMap.get(ConcurrentHashMap.java:936)
at oracle.jdeveloper.db.adapter.DatabaseProvider.getCreatorImpl(DatabaseProvider.java:832)
at oracle.jdeveloper.db.adapter.DatabaseProvider.getCreator(DatabaseProvider.java:813)
at oracle.jdeveloper.db.adapter.DatabaseProvider.getReference(DatabaseProvider.java:266)
at oracle.adf.share.jndi.ContextImpl.getObjectReference(ContextImpl.java:822)
at oracle.adf.share.jndi.ContextImpl.bindObject(ContextImpl.java:799)
at oracle.adf.share.jndi.ContextImpl.bind(ContextImpl.java:190)
at oracle.adf.share.jndi.ContextImpl.bind(ContextImpl.java:199)
at javax.naming.InitialContext.bind(InitialContext.java:425)
at oracle.jdeveloper.db.DatabaseConnections.addConnection(DatabaseConnections.java:967)
at oracle.dbtools.raptor.connections.impexp.ImportDestination.commitChanges(ImportDestination.java:75)
at oracle.dbtools.raptor.connections.impexp.ImportEngine.performAction(ImportEngine.java:66)
at oracle.dbtools.raptor.connections.impexp.ImpExpEngine$1.commit(ImpExpEngine.java:205)
at oracle.ide.wizard.FSMWizard.finishImpl(FSMWizard.java:978)
at oracle.ide.wizard.FSMWizard._validateFSMState(FSMWizard.java:667)
at oracle.ide.wizard.FSMWizard.doFinish(FSMWizard.java:355)
at oracle.bali.ewt.wizard.BaseWizard$Action$1.run(BaseWizard.java:4069)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:756)
at java.awt.EventQueue.access$500(EventQueue.java:97)
at java.awt.EventQueue$3.run(EventQueue.java:709)
at java.awt.EventQueue$3.run(EventQueue.java:703)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:75)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:726)
at oracle.javatools.internal.ui.EventQueueWrapper._dispatchEvent(EventQueueWrapper.java:169)
at oracle.javatools.internal.ui.EventQueueWrapper.dispatchEvent(EventQueueWrapper.java:151)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:109)
at java.awt.WaitDispatchSupport$2.run(WaitDispatchSupport.java:184)
at java.awt.WaitDispatchSupport$4.run(WaitDispatchSupport.java:229)
at java.awt.WaitDispatchSupport$4.run(WaitDispatchSupport.java:227)
at java.security.AccessController.doPrivileged(Native Method)
at java.awt.WaitDispatchSupport.enter(WaitDispatchSupport.java:227)
at java.awt.Dialog.show(Dialog.java:1084)
at java.awt.Component.show(Component.java:1654)
at java.awt.Component.setVisible(Component.java:1606)
at java.awt.Window.setVisible(Window.java:1014)
at java.awt.Dialog.setVisible(Dialog.java:1005)
at oracle.bali.ewt.wizard.WizardDialog.runDialog(WizardDialog.java:382)
at oracle.bali.ewt.wizard.WizardDialog.runDialog(WizardDialog.java:298)
at oracle.ide.dialogs.WizardLauncher.runDialog(WizardLauncher.java:51)
at oracle.dbtools.raptor.connections.impexp.ImpExpEngine.invoke(ImpExpEngine.java:226)
at oracle.dbtools.raptor.connections.impexp.ImpExpController.handleEvent(ImpExpController.java:52)
at oracle.ideimpl.controller.MetaClassController.handleEvent(MetaClassController.java:54)
at oracle.ide.controller.IdeAction$ControllerDelegatingController.handleEvent(IdeAction.java:1482)
at oracle.ide.controller.IdeAction.performAction(IdeAction.java:663)
at oracle.ide.controller.IdeAction.actionPerformedImpl(IdeAction.java:1153)
at oracle.ide.controller.IdeAction.actionPerformed(IdeAction.java:618)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2022)
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2346)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
at javax.swing.AbstractButton.doClick(AbstractButton.java:376)
at javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:833)
at javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(BasicMenuItemUI.java:877)
at java.awt.Component.processMouseEvent(Component.java:6525)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3324)
at java.awt.Component.processEvent(Component.java:6290)
at java.awt.Container.processEvent(Container.java:2234)
at java.awt.Component.dispatchEventImpl(Component.java:4881)
at java.awt.Container.dispatchEventImpl(Container.java:2292)
at java.awt.Component.dispatchEvent(Component.java:4703)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4898)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4533)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4462)
at java.awt.Container.dispatchEventImpl(Container.java:2278)
at java.awt.Window.dispatchEventImpl(Window.java:2750)
at java.awt.Component.dispatchEvent(Component.java:4703)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:758)
at java.awt.EventQueue.access$500(EventQueue.java:97)
at java.awt.EventQueue$3.run(EventQueue.java:709)
at java.awt.EventQueue$3.run(EventQueue.java:703)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:75)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:86)
at java.awt.EventQueue$4.run(EventQueue.java:731)
at java.awt.EventQueue$4.run(EventQueue.java:729)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:75)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:728)
at oracle.javatools.internal.ui.EventQueueWrapper._dispatchEvent(EventQueueWrapper.java:169)
at oracle.javatools.internal.ui.EventQueueWrapper.dispatchEvent(EventQueueWrapper.java:151)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)

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