SAP ME 15.5 ClassCastException

[PaulRos]

Hi Experts ,

After a success deployment , did you see the following error in the SAP ME NWA log ?

This error didn't appear in SAP ME version 15.4 , only in 15.5 version.

[EXCEPTION]
java.lang.ClassCastException: java.lang.reflect.WeakCache (loaded by <bootstrap>) cannot be cast to java.util.Map (loaded by <bootstrap>)
at com.sap.me.frame.AppStartupListener.clearProxyCache(AppStartupListener.java:93)
at com.sap.me.frame.AppStartupListener.contextDestroyed(AppStartupListener.java:63)
at com.sap.engine.services.servlets_jsp.server.application.WebEvents.contextDestroyed(WebEvents.java:169)
at com.sap.engine.services.servlets_jsp.server.deploy.ApplicationThreadDestroyer.run(ApplicationThreadDestroyer.java:124)
at com.sap.engine.services.servlets_jsp.server.deploy.SubjectDoAsHelper$1.run(SubjectDoAsHelper.java:59)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:360)
at com.sap.engine.services.servlets_jsp.server.deploy.SubjectDoAsHelper.executeInSubjectDoAs(SubjectDoAsHelper.java:57)
at com.sap.engine.services.servlets_jsp.server.deploy.ActionBase.destroyWebAppComponents(ActionBase.java:219)
at com.sap.engine.services.servlets_jsp.server.deploy.StopAction.commitStop(StopAction.java:112)
at com.sap.engine.services.servlets_jsp.server.deploy.WebContainer.commitStop(WebContainer.java:696)
at com.sap.engine.services.deploy.server.utils.container.ContainerWrapper.commitStop(ContainerWrapper.java:562)
at com.sap.engine.services.deploy.server.application.StopTransaction.commonCommitFinished(StopTransaction.java:244)
at com.sap.engine.services.deploy.server.application.StopTransaction.commitCommon(StopTransaction.java:285)
at com.sap.engine.services.deploy.server.application.StopTransaction.commit(StopTransaction.java:269)
at com.sap.engine.services.deploy.server.application.ApplicationTransaction.makeAllPhasesOnOneServer(ApplicationTransaction.java:444)
at com.sap.engine.services.deploy.server.application.ParallelAdapter.makeAllPhases(ParallelAdapter.java:486)
at com.sap.engine.services.deploy.server.DeployServiceImpl.runTransaction(DeployServiceImpl.java:690)
at com.sap.engine.services.deploy.server.DeployServiceImpl.stopApplicationForAtomicUpdate(DeployServiceImpl.java:671)
at com.sap.engine.services.deploy.server.DeployServiceImpl.atomicUpdate(DeployServiceImpl.java:608)
at com.sap.engine.services.dc.gd.impl.ApplicationDeployer.update(ApplicationDeployer.java:73)
at com.sap.engine.services.dc.gd.impl.InitialApplicationDeployer.performDeployment(InitialApplicationDeployer.java:142)
at com.sap.engine.services.dc.gd.impl.InitialGenericDeliveryImpl.deploy(InitialGenericDeliveryImpl.java:58)
at com.sap.engine.services.dc.cm.deploy.impl.OnlineDeployProcessor.performDelivery(OnlineDeployProcessor.java:212)
at com.sap.engine.services.dc.cm.deploy.impl.BulkOnlineDeployProcessor.deploy(BulkOnlineDeployProcessor.java:71)
at com.sap.engine.services.dc.cm.deploy.impl.AbstractDeployProcessor$DeployProcessorHelper.visit(AbstractDeployProcessor.java:283)
at com.sap.engine.services.dc.cm.deploy.impl.DeploymentItemImpl.accept(DeploymentItemImpl.java:84)
at com.sap.engine.services.dc.cm.deploy.impl.AbstractDeployProcessor.deploy(AbstractDeployProcessor.java:100)
at com.sap.engine.services.dc.cm.deploy.impl.DeployThread.run(DeployThread.java:39)
at com.sap.engine.core.thread.execution.Executable.run(Executable.java:122)
at com.sap.engine.core.thread.execution.Executable.run(Executable.java:101)
at com.sap.engine.core.thread.execution.CentralExecutor$SingleThread.run(CentralExecutor.java:328)

[PaulRos · Accepted solution]

error solved by an SAP ME native code correction inside SAP ME 15.5 Patch 42

[sergiy_katerinich]

Hi!

I do not see such error in our systems. If the error reoccurs on each NW restart, it might depend on NW version (because of some latest changes). I've tested on 7.50.18.

Regards,

Sergiy

[PaulRos]

Hi Sergiy ,

Thank you very much for your answer ;

We are using the latest NW (7.50.31) and SAP ME 15.5 Patch 41 (same error on Patch 40);

Do you think it is an SAP bug ?

Regards ,

Paul

[sergiy_katerinich]

I have found this error in the logs of NW 7.50.31. However, I doubt it is a bug because it does not affect functional side that is regularly tested in this environment. It could be some gap between ME and later changes to bootstrap mechanism in NW, but so far we have no evidence of harm to the application. Maybe it should be a Warning instead of Error severity. If you need SAP support to examine it deeper, please submit a ticket of minor priority.

[PaulRos]

Ticket open to SAP for the Exception above.

[sergiy_katerinich]

Provided the call stack of this error, it is not obvious that the custom content has problems because of this error. I guess the custom content is deployed as a separate component/project. But this error seems related to startup of the core SAP ME.

[PaulRos]

Ticket open to SAP for the Exception above.