PK40728: UNABLE TO CONNECT TO LOCAL WEBSPHERE APPLICATION SERVER USING RMI WHEN NETWORK CONNECTIVITY HAS BEEN LOST.

6.1.1.3: WebSphere Application Server Toolkit Version 6.1.1 Fix Pack 3
Rational Application Developer, Version 7.0.0.3

APAR status

• Closed as program error.

Error description

• When using the RMI connection to WAS the client connection can
  fail.
  To reproduce:
  1) Plug a laptop into network and start AST v6.1.
  2) Define a new WAS v6.1 server and verify that you can start it
  and the status appears correctly in the Servers view.
  3) Stop the server.
  4) Unplug the network connection.
  5) Start WAS v6.1 - note that the server status stays as
  Starting... and will eventually timeout.
  6) Switch to SOAP, and it can connect to the server.
  7) Switch back to RMI, and the client fails again as the server
  status goes back to Stopped.
  8) Restart AST, and RMI will work again.
  Tracing activity shows the following exception:
  com.ibm.ws.orbimpl.transport.WSTCPTransportConnection
  connect:403 WAS communication ORBRas[default]
  java.net.NoRouteToHostException: No route to host: connect
  at java.net.PlainSocketImpl.socketConnect(Native Method)
  at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:372)
  at
  java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:2
  33)
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users using the version 6.1 WebSphere    *
  *                 Application Server runtime in Rational       *
  *                 Application Developer v7.0 and WebSphere     *
  *                 Application Server Toolkit v6.1              *
  ****************************************************************
  * PROBLEM DESCRIPTION: The connection to the version6          *
  *                      WebSphere Application Server runtime    *
  *                      is lost when using RMI as the connector *
  *                      and the localhost network address       *
  *                      changes.                                *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  If a computer is connected to a wired network and a version6
  WebSphere Application Server runtime is being used via the RMI
  connector when the network changes (for example, to a wireless
  network) then the connection to the server is permanently lost
  in Rational Application Developer and WebSphere Applicatoin
  Server Toolkit.
  

Problem conclusion

• The JVM name lookup cache policy for Rational Application
  Developer and WebSphere Application Server Toolkit has been
  modified to cache the hostname for only 1 second.  Therefore,
  if the address changes for the local adaptor then the
  connection will re-establish after 1 second.
  
  The fix for this APAR is currently targeted for inclusion in
  Rational Application Developer v7.0.0.3 and WebSphere
  Application Server Toolkit v6.1.1.3.  Please refer to the
  Recommended Updates page for WebSphere Application Server
  Toolkit delivery information:
  http://www.ibm.com/support/docview.wss?uid=swg27004980
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

Fix information

• Fixed component name

  WEBAPP SERVER A

• Fixed component ID

  5724J0820

Applicable component levels

• R610 PSY

     UP