I've just seen this error. It's running on JDK11
2019-03-21 18:10:19.291/11835.580 Oracle Coherence GE 12.2.1.3.0 <Error> (thread=Invocation:Management, member=6): Failed to register MBean: Remote
Model: type=PointToPoint,cluster=test,member=user1_~0,4~4,2~6,2_~8,2~10,2~12,2,nodeId=4, owner=Member(Id=4, Timestamp=2019-03-21 18:10:19
.175, Address=10.0.48.52:8092, MachineId=30200, Location=site:10.0.48.52,rack:test,machine:WK,process:10224,member:user1_~0,4~4,2~6,2_~8,2~10,2~12,2, Role=TestMain); reason=javax.management.MalformedObjectNameException: ObjectName "Coherence:type=PointToPoint,cluster=test,member=user1_~0,4~4,2~6,2_~8,2~10,2~12,2,nodeId=4" is invalid.
at com.tangosol.net.management.MBeanHelper.quoteCanonical(MBeanHelper.java:848)
at com.tangosol.coherence.component.net.management.gateway.Local.getObjectName(Local.CDB:22)
at com.tangosol.coherence.component.net.management.gateway.Local.registerModelMBean(Local.CDB:14)
at com.tangosol.coherence.component.net.management.Connector.onRegister(Connector.CDB:50)
at com.tangosol.coherence.component.net.management.Connector$Register.run(Connector.CDB:2)
at com.tangosol.coherence.component.util.daemon.queueProcessor.service.grid.InvocationService.onInvocationMessage(InvocationService.CDB:6)
at com.tangosol.coherence.component.util.daemon.queueProcessor.service.grid.InvocationService$InvocationMessage.onReceived(InvocationServic
e.CDB:32)
at com.tangosol.coherence.component.util.daemon.queueProcessor.service.Grid.onMessage(Grid.CDB:38)
at com.tangosol.coherence.component.util.daemon.queueProcessor.service.Grid.onNotify(Grid.CDB:23)
at com.tangosol.coherence.component.util.Daemon.run(Daemon.CDB:54)
at java.base/java.lang.Thread.run(Thread.java:834)