"Network connection to server was lost" While Using SAF.

While SAF forwarding messages observed these exceptions :

<Forwarder failed to forward the message TextMessage[ID:<208538.1332932991799.0>, <soapenv:Envelope xmlns:soapen...] to
SAF_Module_UIM!UIMResponse1 stopPipeline= false hasNonFailedDDMembers true isExactlyOnceDDForwarding true failureCount 0
weblogic.jms.common.LostServerException: [JMSClientExceptions:055169]Network connection to server was lost.
    at weblogic.jms.client.JMSProducer.checkClosed(JMSProducer.java:949)
    at weblogic.jms.client.JMSProducer.publicCheckClosed(JMSProducer.java:954)
    at weblogic.jms.client.ReconnectController.checkClosedReconnect(ReconnectController.java:673)
    at weblogic.jms.client.WLProducerImpl.checkClosedReconnectGetProducer(WLProducerImpl.java:53)
    at weblogic.jms.client.WLProducerImpl.checkClosedReconnectGetProducer(WLProducerImpl.java:56)
    at weblogic.jms.client.WLProducerImpl.getUnitOfOrder(WLProducerImpl.java:475)
    at weblogic.jms.extensions.JMSForwardHelper$Preserve.<init>(JMSForwardHelper.java:337)
    at weblogic.jms.extensions.JMSForwardHelper.ForwardInternal(JMSForwardHelper.java:196)