Troubleshooting
Problem
istool workbench query command fails with ClassNotFoundException for MwbExtensions.MwbExtensionsPackage class after upgrading Information Server to 11.7.1 SP2.
This error is also observed in Information Server 11.5.0.2 with JR61183 fix applied.
Symptom
istool log shows below stacktrace
java.lang.ExceptionInInitializerError
at java.lang.J9VMInternals.ensureError(J9VMInternals.java:146)
at java.lang.J9VMInternals.recordInitializationFailure(J9VMInternals.java:135)
at com.ibm.iis.flowgraph.util.FrUtil.registerObjectFactory(FrUtil.java:55)
.
.
.
Caused by: com.unicorn.mdrepository.util.MDRUnexpectedCoreException: Error reading metamodel for level=2
at com.unicorn.ontology.project.ProjectModelImpl.deserializeOntology(ProjectModelImpl.java:526)
at com.unicorn.ontology.project.ProjectModelImpl$4.execute(ProjectModelImpl.java:315)
.
.
.
Caused by: java.lang.NoClassDefFoundError: MwbExtensions.MwbExtensionsPackage
at com.ibm.iis.xmeta.datamgmt.ca.impl.CustomAttributeServiceImpl.<clinit>(CustomAttributeServiceImpl.java:120)
at com.ibm.iis.xmeta.datamgmt.ca.CustomAttributeServiceFactory.createService(CustomAttributeServiceFactory.java:55)
at com.ibm.wb.customattributes.impl.CommonCustomAttributeServiceImpl.getCAService(CommonCustomAttributeServiceImpl.java:77)...Caused by: java.lang.ClassNotFoundException: MwbExtensions.MwbExtensionsPackage
at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:506)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:422)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:410)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)
at java.lang.ClassLoader.loadClass(ClassLoader.java:852)
Document Location
Worldwide
[{"Business Unit":{"code":"BU048","label":"IBM Software"},"Product":{"code":"SSZJPZ","label":"IBM InfoSphere Information Server"},"Component":"","Platform":[{"code":"PF002","label":"AIX"},{"code":"PF016","label":"Linux"},{"code":"PF033","label":"Windows"}],"Version":"11.7.1 SP2;11.5.0.2","Edition":"","Line of Business":{"code":"LOB76","label":"Data Platform"}}]
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Document Information
Modified date:
25 April 2025
UID
ibm11125795