1 Reply Latest reply: Oct 22, 2011 8:13 AM by René van Wijk RSS

    Peer unreachable for 240 seconds

      I have a simple J2EE server client application. Its deployed on

      weblogic server. Whenever my client is receiving large chunk of data

      from server i get error saying "Peer is unreachable for 240 seconds".

      I tried configuring heartbeat timeout (IdlePeriodsUntilTimeout) to 10

      seconds (default value was 4). And my understanding was even if i

      receive error it would say "Peer is unreachable for 600 seconds" (as

      in both cases heartbeat PeriodLength is 60). But i still keep getting

      error that peer is unreachable for 240 seconds.
      I tried to find information about server tuning for this issue. But I

      could not find anything else.
      Any help or hint would be appreciated.
        • 1. Re: Peer unreachable for 240 seconds
          René van Wijk
          Some information on the 240 seconds can be found here: http://download.oracle.com/docs/cd/E12840_01/wls/docs103/rmi/rmi_t3.html

          Could be your network is not able to carry large chunks of data. You can check the packet size by using the ping utility, for example,
          ping -c 3 -M do -s 1468
          PING ( 1468(1496) bytes of data.
          1476 bytes from icmp_seq=1 ttl=64 time=0.019 ms
          1476 bytes from icmp_seq=2 ttl=64 time=0.024 ms
          1476 bytes from icmp_seq=3 ttl=64 time=0.024 ms
          --- ping statistics ---
          3 packets transmitted, 3 received, 0% packet loss, time 2000ms
          rtt min/avg/max/mdev = 0.019/0.022/0.024/0.004 ms
          The 1468 is the packet size for which a test is performed. If a message is shown that must be fragmented you know the packaet size is too large.