Hi there,
I currently try to get a working connection to an Gupta SQLBase Database. Therefore i configured a new Database under preferences, linked the corresponding JAR-File and used the DB Connector node to connect. So far so good except for this error I found in the logs:
2020-11-04 13:03:26,266 : ERROR : KNIME-Worker-4-DB Connector 0:5 : : Node : DB Connector : 0:5 : Execute failed: DB Session 9dcbe856-915e-45d3-a119-c895cb5a8d6d is invalid. null
java.lang.IllegalStateException: DB Session 9dcbe856-915e-45d3-a119-c895cb5a8d6d is invalid. null
at org.knime.database.session.impl.DefaultDBSession.validate(DefaultDBSession.java:382)
at org.knime.database.node.connector.AbstractDBConnectorNodeModel.registerSession(AbstractDBConnectorNodeModel.java:389)
at org.knime.database.node.connector.AbstractDBConnectorNodeModel.execute(AbstractDBConnectorNodeModel.java:219)
at org.knime.core.node.NodeModel.executeModel(NodeModel.java:576)
at org.knime.core.node.Node.invokeFullyNodeModelExecute(Node.java:1236)
at org.knime.core.node.Node.execute(Node.java:1016)
at org.knime.core.node.workflow.NativeNodeContainer.performExecuteNode(NativeNodeContainer.java:558)
at org.knime.core.node.exec.LocalNodeExecutionJob.mainExecute(LocalNodeExecutionJob.java:95)
at org.knime.core.node.workflow.NodeExecutionJob.internalRun(NodeExecutionJob.java:201)
at org.knime.core.node.workflow.NodeExecutionJob.run(NodeExecutionJob.java:117)
at org.knime.core.util.ThreadUtils$RunnableWithContextImpl.runWithContext(ThreadUtils.java:334)
at org.knime.core.util.ThreadUtils$RunnableWithContext.run(ThreadUtils.java:210)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at org.knime.core.util.ThreadPool$MyFuture.run(ThreadPool.java:123)
at org.knime.core.util.ThreadPool$Worker.run(ThreadPool.java:246)
Caused by: java.lang.AbstractMethodError
at org.knime.database.connection.wrappers.AbstractConnectionWrapper.isValid(AbstractConnectionWrapper.java:431)
at org.knime.database.connection.wrappers.AbstractConnectionWrapper.isValid(AbstractConnectionWrapper.java:431)
at org.knime.database.connection.impl.managed.ManagedConnection.isValid(ManagedConnection.java:140)
at org.knime.database.connection.wrappers.AbstractConnectionWrapper.isValid(AbstractConnectionWrapper.java:431)
at org.knime.database.connection.wrappers.AbstractConnectionWrapper.isValid(AbstractConnectionWrapper.java:431)
at org.knime.database.connection.wrappers.AbstractConnectionWrapper.isValid(AbstractConnectionWrapper.java:431)
at org.knime.database.session.impl.DefaultDBSession.validate(DefaultDBSession.java:367)
ā¦ 15 more
Can someone help to fix this invalid connection or have an idea why this occurs? If you need more details let me know!