我从 sql developer 连接到数据库。之后我无法运行任何查询。它没有在连接字符串下显示任何数据库对象。我看到了以下错误。有人可以帮我解决这个问题吗？
java.util.UnknownFormatConversionException: Conversion = '0'
at java.util.Formatter.checkText(Formatter.java:2503)
at java.util.Formatter.parse(Formatter.java:2485)
at java.util.Formatter.format(Formatter.java:2414)
at java.util.Formatter.format(Formatter.java:2367)
at java.lang.String.format(String.java:2769)
at oracle.dbtools.raptor.backgroundTask.internal.SimpleRaptorTaskUI.getFormattedTime(SimpleRaptorTaskUI.java:219)
at oracle.dbtools.raptor.backgroundTask.internal.RaptorTaskUI.setState(RaptorTaskUI.java:43)
at oracle.dbtools.raptor.backgroundTask.internal.SimpleRaptorTaskUI.<init>(SimpleRaptorTaskUI.java:59)
at oracle.dbtools.raptor.backgroundTask.internal.RaptorTaskUI.<init>(RaptorTaskUI.java:36)
at oracle.dbtools.raptor.backgroundTask.ui.TaskProgressViewer$4.<init>(TaskProgressViewer.java:297)
at oracle.dbtools.raptor.backgroundTask.ui.TaskProgressViewer.createTaskUI(TaskProgressViewer.java:297)
at oracle.dbtools.raptor.backgroundTask.RaptorTaskManager.initViewers(RaptorTaskManager.java:338)
at oracle.dbtools.raptor.backgroundTask.RaptorTaskManager.addTask(RaptorTaskManager.java:279)
at oracle.dbtools.raptor.backgroundTask.RaptorTaskManager.addTask(RaptorTaskManager.java:184)
at oracle.dbtools.raptor.backgroundTask.RaptorTaskManager.addTask(RaptorTaskManager.java:145)
at oracle.dbtools.worksheet.editor.OpenWorksheetWizard.invoke(OpenWorksheetWizard.java:351)
at oracle.ide.wizard.WizardManager.invokeWizard(WizardManager.java:372)
at oracle.dbtools.worksheet.editor.WorksheetOpenController$1.run(WorksheetOpenController.java:67)
at oracle.dbtools.worksheet.editor.WorksheetOpenController.openWorksheetWizard(WorksheetOpenController.java:73)
at oracle.dbtools.worksheet.editor.WorksheetOpenController.handleEvent(WorksheetOpenController.java:34)
at oracle.ideimpl.controller.IdeActionHook$MetaClassController.handleEvent(IdeActionHook.java:414)
at oracle.ide.controller.IdeAction.performAction(IdeAction.java:529)
at oracle.ide.controller.IdeAction.actionPerformedImpl(IdeAction.java:884)
at oracle.ide.controller.IdeAction.actionPerformed(IdeAction.java:501)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1995)
at oracle.ide.controls.ActionMenuToolButton.access$400(ActionMenuToolButton.java:82)
at oracle.ide.controls.ActionMenuToolButton$FilterActionEvents.actionPerformed(ActionMenuToolButton.java:394)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387)
at javax.swing.JToggleButton$ToggleButtonModel.setPressed(JToggleButton.java:291)
at oracle.ide.controls.ActionMenuToolButton$2.setPressed(ActionMenuToolButton.java:223)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:236)
at java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:273)
at java.awt.Component.processMouseEvent(Component.java:6297)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3275)
at java.awt.Component.processEvent(Component.java:6062)
at java.awt.Container.processEvent(Container.java:2039)
at java.awt.Component.dispatchEventImpl(Component.java:4660)
at java.awt.Container.dispatchEventImpl(Container.java:2097)
at java.awt.Component.dispatchEvent(Component.java:4488)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4575)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4236)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4166)
at java.awt.Container.dispatchEventImpl(Container.java:2083)
at java.awt.Window.dispatchEventImpl(Window.java:2489)
at java.awt.Component.dispatchEvent(Component.java:4488)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:668)
at java.awt.EventQueue.access$400(EventQueue.java:81)
at java.awt.EventQueue$2.run(EventQueue.java:627)
at java.awt.EventQueue$2.run(EventQueue.java:625)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)
at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:98)
at java.awt.EventQueue$3.run(EventQueue.java:641)
at java.awt.EventQueue$3.run(EventQueue.java:639)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:638)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)