Migración de sql server 2008 R2 a oracle

Buenas, tengo un problema con la migración, anteriormente lo he realizado sin problemas, pero me he econtrado con un server que me esta dando este problema, cuando uso el asistente de sql developer de Oracle todo bien, pero cuando voy hacer la conexión a sql server me da este error:

java.lang.Exception: El plugin utilizado para capturar este modelo no está disponible. Vuelva a instalar el plugin y a intentarlo antes de realizar la conversión.
at oracle.dbtools.migration.workbench.core.ui.quickmigrate.QMWizard$ContextHelper.getMigrationPluginOnline(QMWizard.java:576)
at oracle.dbtools.migration.workbench.core.ui.quickmigrate.CapturePageMigration.initPageState(CapturePageMigration.java:305)
at oracle.dbtools.migration.workbench.core.ui.quickmigrate.CapturePageMigration.onEntry(CapturePageMigration.java:78)
at oracle.ide.wizard.FSMWizard.gotoPanel(FSMWizard.java:765)
at oracle.ide.wizard.FSMWizard.setSelectedPage(FSMWizard.java:481)
at oracle.bali.ewt.wizard.BaseWizard.selectPage(BaseWizard.java:1966)
at oracle.ide.wizard.FSMWizard.selectPage(FSMWizard.java:465)
at oracle.ide.wizard.FSMWizard.doNext(FSMWizard.java:340)
at oracle.bali.ewt.wizard.BaseWizard$Action$1.run(BaseWizard.java:4033)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:251)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:733)
at java.awt.EventQueue.access$200(EventQueue.java:103)
at java.awt.EventQueue$3.run(EventQueue.java:694)
at java.awt.EventQueue$3.run(EventQueue.java:692)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:703)
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:242)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:154)
at java.awt.WaitDispatchSupport$2.run(WaitDispatchSupport.java:182)
at java.awt.WaitDispatchSupport$4.run(WaitDispatchSupport.java:221)
at java.security.AccessController.doPrivileged(Native Method)
at java.awt.WaitDispatchSupport.enter(WaitDispatchSupport.java:219)
at java.awt.Dialog.show(Dialog.java:1082)
at java.awt.Component.show(Component.java:1651)
at java.awt.Component.setVisible(Component.java:1603)
at java.awt.Window.setVisible(Window.java:1014)
at java.awt.Dialog.setVisible(Dialog.java:1005)
at oracle.bali.ewt.wizard.WizardDialog.runDialog(WizardDialog.java:382)
at oracle.bali.ewt.wizard.WizardDialog.runDialog(WizardDialog.java:298)
at oracle.ide.dialogs.WizardLauncher.runDialog(WizardLauncher.java:51)
at oracle.dbtools.migration.workbench.core.ui.quickmigrate.QMWizard.launch(QMWizard.java:1444)
at oracle.dbtools.migration.workbench.core.QMLauncher.launch(QMLauncher.java:40)
at oracle.dbtools.raptor.controls.sqldialog.ObjectActionController.handleEvent(ObjectActionController.java:196)
at oracle.ide.controller.IdeAction$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:2018)
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2341)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
at javax.swing.AbstractButton.doClick(AbstractButton.java:376)
at javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:833)
at javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(BasicMenuItemUI.java:877)
at java.awt.Component.processMouseEvent(Component.java:6505)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3321)
at java.awt.Component.processEvent(Component.java:6270)
at java.awt.Container.processEvent(Container.java:2229)
at java.awt.Component.dispatchEventImpl(Component.java:4861)
at java.awt.Container.dispatchEventImpl(Container.java:2287)
at java.awt.Component.dispatchEvent(Component.java:4687)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4832)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4492)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4422)
at java.awt.Container.dispatchEventImpl(Container.java:2273)
at java.awt.Window.dispatchEventImpl(Window.java:2719)
at java.awt.Component.dispatchEvent(Component.java:4687)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:735)
at java.awt.EventQueue.access$200(EventQueue.java:103)
at java.awt.EventQueue$3.run(EventQueue.java:694)
at java.awt.EventQueue$3.run(EventQueue.java:692)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87)
at java.awt.EventQueue$4.run(EventQueue.java:708)
at java.awt.EventQueue$4.run(EventQueue.java:706)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:705)
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:242)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)

alguna idea, los otros 2 lo pase sin problema solo me falto uno.

saludos