Hi,
while debugging something, I noticed this error of the DB Extension
2026-01-06 11:14:21,432 : ERROR : main : : NodeMigrationRuleRegistry : : : Plug-in "org.knime.database.nodes" was unable to instantiate class "org.knime.database.node.manipulation.sampling.sampling.DBSampleNodeMigrationRule".
org.eclipse.core.runtime.CoreException: Plug-in "org.knime.database.nodes" was unable to instantiate class "org.knime.database.node.manipulation.sampling.sampling.DBSampleNodeMigrationRule".
at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.throwException(RegistryStrategyOSGI.java:242)
at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutableExtension(RegistryStrategyOSGI.java:235)
at org.eclipse.core.internal.registry.ExtensionRegistry.createExecutableExtension(ExtensionRegistry.java:987)
at org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(ConfigurationElement.java:255)
at org.eclipse.core.internal.registry.ConfigurationElementHandle.createExecutableExtension(ConfigurationElementHandle.java:65)
at org.knime.workflow.migration.NodeMigrationRuleRegistry.<init>(NodeMigrationRuleRegistry.java:107)
at org.knime.workflow.migration.NodeMigrationRuleRegistry.<clinit>(NodeMigrationRuleRegistry.java:76)
at org.knime.workflow.migration.WorkflowMigrationManager.hasMatchingRule(WorkflowMigrationManager.java:792)
at org.knime.workflow.migration.MigrationWorkflowEditorEventListener.workflowLoaded(MigrationWorkflowEditorEventListener.java:102)
at org.knime.workbench.editor2.LoadWorkflowRunnable.lambda$6(LoadWorkflowRunnable.java:243)
at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:40)
at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:132)
at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4047)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3663)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1151)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:339)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1042)
at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:152)
at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:639)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:339)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:546)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:173)
at org.knime.product.rcp.KNIMEApplication.start(KNIMEApplication.java:213)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:208)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:143)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:109)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:439)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:271)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.base/java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:651)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:588)
at org.eclipse.equinox.launcher.Main.run(Main.java:1459)
Caused by: java.lang.IllegalAccessException: class org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI cannot access a member of class org.knime.database.node.manipulation.sampling.sampling.DBSampleNodeMigrationRule with modifiers ""
at java.base/jdk.internal.reflect.Reflection.newIllegalAccessException(Unknown Source)
at java.base/java.lang.reflect.AccessibleObject.checkAccess(Unknown Source)
at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Unknown Source)
at java.base/java.lang.reflect.Constructor.newInstance(Unknown Source)
at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutableExtension(RegistryStrategyOSGI.java:233)
... 33 more
Best
Mike