Error while starting cluster: java.lang.RuntimeException: Failed to start Service "Cluster. Cause MFT Servers Failed To Start When preferIPv4Stack Property Is Enabled

(Doc ID 2257395.1)

Last updated on AUGUST 09, 2017

Applies to:

Oracle Managed File Transfer Cloud Service - Version 16.1.3 and later
Information in this document applies to any platform.


When MFT server is started with WLS Console, it fails with below error in the logs.

(thread=Cluster, member=n/a): this JVM for cluster 'DataGridConfig' is not configured to allow IPv6 which differs from the configuration of the local JVM for cluster 'defaultCoherenceCluster' which is currently hosting the shared cluster port. In order to share a cluster port this setting must be equal. The system propery can be used to restrict IPv6 support. Name=defaultCoherenceCluster, ClusterPort=7574

(thread=[STANDBY] ExecuteThread: '3' for queue: 'weblogic.kernel.Default (self-tuning)', member=n/a): Error while starting cluster: java.lang.RuntimeException: Failed to start Service "Cluster" (ServiceState=SERVICE_STOPPED, STATE_ANNOUNCE)
at com.tangosol.coherence.component.util.daemon.queueProcessor.Service.start(Service.CDB:38)
at com.tangosol.coherence.component.util.daemon.queueProcessor.service.Grid.start(Grid.CDB:6)
at com.tangosol.coherence.component.util.SafeCluster.startCluster(SafeCluster.CDB:4)
at com.tangosol.coherence.component.util.SafeCluster.restartCluster(SafeCluster.CDB:10)
at com.tangosol.coherence.component.util.SafeCluster.ensureRunningCluster(SafeCluster.CDB:32)
at com.tangosol.coherence.component.util.SafeCluster.getRunningCluster(SafeCluster.CDB:7)
at com.tangosol.coherence.component.util.SafeCluster.start(SafeCluster.CDB:5)
at weblogic.cacheprovider.coherence.EnsureClusterService.initialize(
at weblogic.cacheprovider.coherence.EnsureClusterService.start(
at weblogic.server.AbstractServerService.postConstruct(


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