Deadlock On oracle.mds.core.ClientObjectWrapper.getValue and oracle.mds.core.MOContent.getMDocument in ADF

Last updated on DECEMBER 05, 2016

Applies to:

Symptoms

On : 11.1.2.1.0 version, ADF Core (Architecture, Model, Controllers, Business Comps. and Security)

Deadlock on ADF server.

A deadlock is logged in the logs of the WebLogic server setup deploying an ADF application. After the deadlock, the managed server tries to restart automatically because it is in failed state without success, so the managed server has to be restarted manually.

ERROR
-----------------------
Thread '[ACTIVE] ExecuteThread: '1' for queue: 'weblogic.kernel.Default (self-tuning)'' is waiting to acquire lock 'oracle.mds.naming.MOName@142de76' that is held by thread '[ACTIVE] ExecuteThread: '3' for queue: 'weblogic.kernel.Default (self-tuning)''

Stack trace:
------------
oracle.mds.naming.ResourceName.getResourceType(ResourceName.java:343)
oracle.mds.naming.ResourceName.isSandboxName(ResourceName.java:280)
oracle.mds.internal.persistence.InternalPManager.getStore(InternalPManager.java:509)
oracle.mds.internal.persistence.InternalPManager.hasScope(InternalPManager.java:652)
oracle.mds.internal.persistence.file.J2EEUtils.hasScope(J2EEUtils.java:402)
oracle.mds.internal.cache.BaseMOKey.(BaseMOKey.java:55)
oracle.mds.core.MetadataObject.getBaseMO(MetadataObject.java:1121)
oracle.mds.core.MDSSession.getBaseMO(MDSSession.java:3210)
oracle.mds.core.MDSSession.getMetadataObject(MDSSession.java:1220)
oracle.mds.core.MDSSession.getMetadataObject(MDSSession.java:1166)
oracle.mds.xml.MergedXML.getXMLInputStream(MergedXML.java:266)
oracle.mds.internal.net.AbstractOraMDSURLConnection.getXMLInputStream(AbstractOraMDSURLConnection.java:623)
oracle.mds.internal.net.AbstractOraMDSURLConnection.getInputStream(AbstractOraMDSURLConnection.java:312)
oracle.mds.internal.net.OraMDSCustURLConnection.getInputStream(OraMDSCustURLConnection.java:67)
java.net.URL.openStream(URL.java:1010)
com.sun.faces.facelets.compiler.SAXCompiler.doCompile(SAXCompiler.java:389)
com.sun.faces.facelets.compiler.SAXCompiler.doCompile(SAXCompiler.java:368)
com.sun.faces.facelets.compiler.Compiler.compile(Compiler.java:124)
com.sun.faces.facelets.impl.DefaultFaceletFactory.createFacelet(DefaultFaceletFactory.java:297)
com.sun.faces.facelets.impl.DefaultFaceletFactory.access$100(DefaultFaceletFactory.java:92)
com.sun.faces.facelets.impl.DefaultFaceletFactory$1.newInstance(DefaultFaceletFactory.java:162)
com.sun.faces.facelets.impl.DefaultFaceletFactory$1.newInstance(DefaultFaceletFactory.java:161)
oracle.adfinternal.view.faces.facelets.rich.MDSFaceletCache$ADFFaceletsClientObjectFactory.createClientObject(MDSFaceletCache.java:131)
oracle.mds.core.MDSObject.createClientObject(MDSObject.java:767)
oracle.mds.core.MDSObject.getOrCreateClientObject(MDSObject.java:231)
oracle.mds.j2ee.MDSFaceletsHelper.getOrCreateClientObject(MDSFaceletsHelper.java:121)
oracle.adfinternal.view.faces.facelets.rich.MDSFaceletCache.getFacelet(MDSFaceletCache.java:31)
com.sun.faces.facelets.impl.DefaultFaceletFactory.getFacelet(DefaultFaceletFactory.java:248)
com.sun.faces.facelets.impl.DefaultFaceletFactory.getFacelet(DefaultFaceletFactory.java:193)
com.sun.faces.application.view.FaceletViewHandlingStrategy.buildView(FaceletViewHandlingStrategy.java:741)
org.apache.myfaces.trinidadinternal.application.ViewDeclarationLanguageFactoryImpl$ChangeApplyingVDLWrapper.buildView(ViewDeclarationLanguageFactoryImpl.java:341)
oracle.adfinternal.view.faces.lifecycle.LifecycleImpl._renderResponse(LifecycleImpl.java:982)
oracle.adfinternal.view.faces.lifecycle.LifecycleImpl._executePhase(LifecycleImpl.java:334)
oracle.adfinternal.view.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:232)
javax.faces.webapp.FacesServlet.service(FacesServlet.java:313)
weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)
weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)

Cause