OIM error (org.jgroups.protocols.UDP._send)

  We found this error in logs when customer reported it.

[APP: oim#11.1.2.0.0] failed sending message to null (58 bytes)[[
java.lang.Exception: dest=/19.19.19.19:45566 (61 bytes)
at org.jgroups.protocols.UDP._send(UDP.java:212)
at org.jgroups.protocols.UDP.sendToAllMembers(UDP.java:167)
at org.jgroups.protocols.TP.doSend(TP.java:1102)
at org.jgroups.protocols.TP.send(TP.java:1088)
at org.jgroups.protocols.TP.down(TP.java:907)
at org.jgroups.protocols.PING.sendMcastDiscoveryRequest(PING.java:276)
at org.jgroups.protocols.PING.sendGetMembersRequest(PING.java:256)
at org.jgroups.protocols.Discovery$PingSenderTask$1.run(Discovery.java:396)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:304)

This is known bug and we fixed this by following a workaround given by Oracle.

We just  added below parameter in OIM startup argument.Based on you are starting from console or backend you need to make this change.   -Djava.net.preferIPv4Stack=true