> however stack shows that the TCCL is Teiid's translator module, so some where in JCA layer this is being set up No, Teiid does explicitly set the tccl for calls into the translator layer.

but that is not a real solution.

Olap translator: Mondrian ClassNotFoundException moving from v 3.5.0 to 3.12.0 ------------------------------------------------------------------------------ Key: TEIID-4617 URL: https://issues.jboss.org/browse/TEIID-4617 Project: Teiid Issue Type: Bug Components: Misc. Connectors Affects Versions: 8.12.8.6_3 Reporter: Jan Stastny Assignee: Steven Hawkins Attachments: Screenshot from 2016-12-05 07-49-16.png, mondrian.zip, olap4j.zip Change of version of Mondrian from 3.5.0 to 3.12.0 causes class not found exception. {code:plain} 07:44:03,800 WARN [org.teiid.CONNECTOR] (Worker1_QueryProcessorQueue10) Connector worker process failed for atomic-request=NFuIrbxSPuIu.0.3.3: org.teiid.translator.TranslatorException: javax.resource.ResourceException: IJ000453: Unable to get managed connection for java:/mondrianDS at org.teiid.translator.olap.OlapExecutionFactory.getConnection(OlapExecutionFactory.java:87) [translator-olap-8.12.8.6_3-redhat-1.jar:8.12.8.6_3-redhat-1] at org.teiid.translator.olap.OlapExecutionFactory.getConnection(OlapExecutionFactory.java:45) [translator-olap-8.12.8.6_3-redhat-1.jar:8.12.8.6_3-redhat-1] at org.teiid.translator.ExecutionFactory.getConnection(ExecutionFactory.java:202) [teiid-api-8.12.8.6_3-redhat-1.jar:8.12.8.6_3-redhat-1] at org.teiid.dqp.internal.datamgr.ConnectorWorkItem.execute(ConnectorWorkItem.java:330) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [rt.jar:1.8.0_102] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) [rt.jar:1.8.0_102] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) [rt.jar:1.8.0_102] at java.lang.reflect.Method.invoke(Method.java:498) [rt.jar:1.8.0_102] at org.teiid.dqp.internal.datamgr.ConnectorManager$1.invoke(ConnectorManager.java:211) at com.sun.proxy.$Proxy81.execute(Unknown Source) at org.teiid.dqp.internal.process.DataTierTupleSource.getResults(DataTierTupleSource.java:306) at org.teiid.dqp.internal.process.DataTierTupleSource$1.call(DataTierTupleSource.java:112) at org.teiid.dqp.internal.process.DataTierTupleSource$1.call(DataTierTupleSource.java:108) at java.util.concurrent.FutureTask.run(FutureTask.java:266) [rt.jar:1.8.0_102] at org.teiid.dqp.internal.process.FutureWork.run(FutureWork.java:65) at org.teiid.dqp.internal.process.DQPWorkContext.runInContext(DQPWorkContext.java:280) at org.teiid.dqp.internal.process.ThreadReuseExecutor$RunnableWrapper.run(ThreadReuseExecutor.java:119) at org.teiid.dqp.internal.process.ThreadReuseExecutor$3.run(ThreadReuseExecutor.java:210) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [rt.jar:1.8.0_102] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [rt.jar:1.8.0_102] at java.lang.Thread.run(Thread.java:745) [rt.jar:1.8.0_102] Caused by: java.sql.SQLException: javax.resource.ResourceException: IJ000453: Unable to get managed connection for java:/mondrianDS at org.jboss.jca.adapters.jdbc.WrapperDataSource.getConnection(WrapperDataSource.java:151) at org.jboss.as.connector.subsystems.datasources.WildFlyDataSource.getConnection(WildFlyDataSource.java:69) at org.teiid.translator.olap.OlapExecutionFactory.getConnection(OlapExecutionFactory.java:85) [translator-olap-8.12.8.6_3-redhat-1.jar:8.12.8.6_3-redhat-1] ... 20 more Caused by: javax.resource.ResourceException: IJ000453: Unable to get managed connection for java:/mondrianDS at org.jboss.jca.core.connectionmanager.AbstractConnectionManager.getManagedConnection(AbstractConnectionManager.java:410) at org.jboss.jca.core.connectionmanager.tx.TxConnectionManagerImpl.getManagedConnection(TxConnectionManagerImpl.java:367) at org.jboss.jca.core.connectionmanager.AbstractConnectionManager.allocateConnection(AbstractConnectionManager.java:499) at org.jboss.jca.adapters.jdbc.WrapperDataSource.getConnection(WrapperDataSource.java:143) ... 22 more Caused by: javax.resource.ResourceException: IJ000658: Unexpected throwable while trying to create a connection: null at org.jboss.jca.core.connectionmanager.pool.mcp.SemaphoreArrayListManagedConnectionPool.getConnection(SemaphoreArrayListManagedConnectionPool.java:454) at org.jboss.jca.core.connectionmanager.pool.AbstractPool.getSimpleConnection(AbstractPool.java:457) at org.jboss.jca.core.connectionmanager.pool.AbstractPool.getConnection(AbstractPool.java:429) at org.jboss.jca.core.connectionmanager.AbstractConnectionManager.getManagedConnection(AbstractConnectionManager.java:344) ... 25 more Caused by: javax.resource.ResourceException: Could not create connection at org.jboss.jca.adapters.jdbc.local.LocalManagedConnectionFactory.getLocalManagedConnection(LocalManagedConnectionFactory.java:351) at org.jboss.jca.adapters.jdbc.local.LocalManagedConnectionFactory.createManagedConnection(LocalManagedConnectionFactory.java:299) at org.jboss.jca.core.connectionmanager.pool.mcp.SemaphoreArrayListManagedConnectionPool.createConnectionEventListener(SemaphoreArrayListManagedConnectionPool.java:858) at org.jboss.jca.core.connectionmanager.pool.mcp.SemaphoreArrayListManagedConnectionPool.getConnection(SemaphoreArrayListManagedConnectionPool.java:413) ... 28 more Caused by: java.lang.RuntimeException: java.lang.ClassNotFoundException: mondrian.spi.impl.JndiDataSourceResolver from [Module "org.jboss.teiid.translator.olap:main" from local module loader @16f65612 (finder: local module finder @311d617d (roots: /home/jstastny/tmp-workspaces/workspace/modules,/home/jstastny/tmp-workspaces/workspace/modules/system/layers/dv,/home/jstastny/tmp-workspaces/workspace/modules/system/layers/base/.overlays/layer-base-jboss-eap-6.4.9.CP,/home/jstastny/tmp-workspaces/workspace/modules/system/layers/base))] at mondrian.util.ClassResolver$AbstractClassResolver.instantiateSafe(ClassResolver.java:84) at mondrian.rolap.RolapConnection.getDataSourceResolver(RolapConnection.java:471) at mondrian.rolap.RolapConnection.createDataSource(RolapConnection.java:427) at mondrian.rolap.RolapConnection.<init>(RolapConnection.java:135) at mondrian.rolap.RolapConnection.<init>(RolapConnection.java:91) at mondrian.olap.DriverManager.getConnection(DriverManager.java:113) at mondrian.olap.DriverManager.getConnection(DriverManager.java:69) at mondrian.olap4j.MondrianOlap4jConnection.<init>(MondrianOlap4jConnection.java:162) at mondrian.olap4j.FactoryJdbc4Plus$AbstractConnection.<init>(FactoryJdbc4Plus.java:323) at mondrian.olap4j.FactoryJdbc41Impl$MondrianOlap4jConnectionJdbc41.<init>(FactoryJdbc41Impl.java:118) at mondrian.olap4j.FactoryJdbc41Impl.newConnection(FactoryJdbc41Impl.java:32) at mondrian.olap4j.MondrianOlap4jDriver.connect(MondrianOlap4jDriver.java:97) at org.jboss.jca.adapters.jdbc.local.LocalManagedConnectionFactory.getLocalManagedConnection(LocalManagedConnectionFactory.java:323) ... 31 more Caused by: java.lang.ClassNotFoundException: mondrian.spi.impl.JndiDataSourceResolver from [Module "org.jboss.teiid.translator.olap:main" from local module loader @16f65612 (finder: local module finder @311d617d (roots: /home/jstastny/tmp-workspaces/workspace/modules,/home/jstastny/tmp-workspaces/workspace/modules/system/layers/dv,/home/jstastny/tmp-workspaces/workspace/modules/system/layers/base/.overlays/layer-base-jboss-eap-6.4.9.CP,/home/jstastny/tmp-workspaces/workspace/modules/system/layers/base))] at org.jboss.modules.ModuleClassLoader.findClass(ModuleClassLoader.java:213) [jboss-modules.jar:1.3.7.Final-redhat-1] at org.jboss.modules.ConcurrentClassLoader.performLoadClassUnchecked(ConcurrentClassLoader.java:459) [jboss-modules.jar:1.3.7.Final-redhat-1] at org.jboss.modules.ConcurrentClassLoader.performLoadClassChecked(ConcurrentClassLoader.java:408) [jboss-modules.jar:1.3.7.Final-redhat-1] at org.jboss.modules.ConcurrentClassLoader.performLoadClass(ConcurrentClassLoader.java:389) [jboss-modules.jar:1.3.7.Final-redhat-1] at org.jboss.modules.ConcurrentClassLoader.loadClass(ConcurrentClassLoader.java:134) [jboss-modules.jar:1.3.7.Final-redhat-1] at java.lang.Class.forName0(Native Method) [rt.jar:1.8.0_102] at java.lang.Class.forName(Class.java:348) [rt.jar:1.8.0_102] at mondrian.util.ClassResolver$AbstractClassResolver.forName(ClassResolver.java:92) at mondrian.util.ClassResolver$AbstractClassResolver.instantiateSafe(ClassResolver.java:63) ... 43 more {code} But the class is present in the new version of Mondrian too, see attached screenshot with decompiled jar structure. One workaround I found was to add dependency into olap translator's module.xml pointing at the org.mondrian module, which contains the mondrian jar. But this action is not required when using Mondrian 3.5.0.