Oracle Message NNC-00427 - server does not support this version of the protocol

ERRORserver does not support this version of the protocol
CAUSEA name server message with an incompatible protocol version was received by a name server or the name server program interface. This problem will occur when there are clients and servers with widely varying protocol versions that are trying to communicate.
ACTIONupgrade older client and server software so it is compatible with newer software.