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Deadlock Issue Occurring In OTM. (Doc ID 1336147.1)

Last updated on APRIL 04, 2018

Applies to:

Oracle Transportation Management - Version: 6.1.4 to 6.1.6 - Release: 6.1 to 6.1
Information in this document applies to any platform.


On OTM version 6.1.4 the following dead lock arises

Error Exception java.lang.NullPointerException

at java.util.LinkedList.remove(
at glog.server.synch.object.ObjectLock.tryLock(
at glog.server.synch.object.ObjectLock.tryLock(
at glog.server.synch.object.ObjectLockMediatorID.acquire(
at glog.server.workflow.mediator.Mediator.checkAndRelease(
at glog.server.workflow.mediator.Mediator.checkGroup(
at glog.server.synch.object.ObjectLockMediatorID$1.onUnlock(
at glog.server.synch.object.ObjectLock.onUnlock(
at glog.server.synch.object.ObjectLocks$Hold.unlock(
at glog.server.wrapper.WrapperSessionBean.execDispatch(
at glog.server.wrapper.WrapperSessionServerSideEJBWrapper.execDispatch(
at glog.server.wrapper.WrapperSessionHome_a06097_EOImpl.execDispatch(
at glog.server.wrapper.WrapperSessionHome_a06097_EOImpl_WLSkel.invoke(Unknown Source)
at weblogic.rmi.internal.BasicServerRef.invoke(
at weblogic.rmi.cluster.ClusterableServerRef.invoke(

The issue can be reproduced at will with the following steps:
Actual replicate steps are not know the deadlock was seen in the mediator.


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