2947002 - Jobs do not run due to singleton lock

In defaultTrace_XX.X.trc with trace location com.sap.engine.services.scheduler with DEBUG severity you can see the following exception:

#2.0#<timestamp>#+0200#Debug#com.sap.engine.services.scheduler.impl.ServiceFrame#
#BC-JAS-BTC#scheduler#<traceid>#<javatime>##com.sap.engine.services.scheduler.impl.ServiceFrame#Guest#0##<traceid>#<traceid>##0#Timeout Event Processor, id [X], invocation [X]#Plain##
Unable to obtain the singleton lock. Waiting for another <time>ms.
[EXCEPTION]
com.sap.engine.frame.core.locking.LockException: Cannot lock [<lockid>, $scheduler~singleton, synchronization, X]; it is in use by another owner. The lock collision occurred with user <internal>.
at com.sap.engine.core.locking.impl3.LockingManagerImpl.lockInternal(LockingManagerImpl.java:170)
at com.sap.engine.core.locking.AbstractLockingManagerImpl.lock(AbstractLockingManagerImpl.java:466)
at com.sap.engine.core.locking.AbstractLockingManagerImpl.lock(AbstractLockingManagerImpl.java:488)
at com.sap.engine.core.locking.ServerInternalLockingImpl.lock(ServerInternalLockingImpl.java:42)
at com.sap.engine.services.scheduler.impl.ServiceFrame$MutexObtainer.tryToStartTheSingleton(ServiceFrame.java:771)
at com.sap.engine.services.scheduler.impl.ServiceFrame$MutexObtainer.timeout(ServiceFrame.java:713)
at com.sap.engine.services.timeout.TimeoutNode.run(TimeoutNode.java:83)
at com.sap.engine.core.thread.impl3.ActionObject.run(ActionObject.java:37)
at java.security.AccessController.doPrivileged(Native Method)
at com.sap.engine.core.thread.impl3.SingleThread.execute(SingleThread.java:185)
at com.sap.engine.core.thread.impl3.SingleThread.run(SingleThread.java:302)

SAP NetWeaver Application Server Java

singleton lock not running scheduler btc job task bpm galaxy timer po , KBA , BC-JAS-BTC , NetWeaver Scheduler (Java) , Problem