JBoss, eclipse and port bindings

please close the door

via Flickr by Aeioux

Starting JBoss (5.1.x) from eclipse (3.5.x) it could happen that you get an exception like the following:

15:26:51,530 ERROR [Naming] Could not start on port 1099
java.net.BindException: Address already in use: JVM_Bind
 at java.net.PlainSocketImpl.socketBind(Native Method)
 at java.net.PlainSocketImpl.bind(Unknown Source)
 at java.net.ServerSocket.bind(Unknown Source)
 at java.net.ServerSocket.<init>(Unknown Source)
 at javax.net.DefaultServerSocketFactory.createServerSocket(Unknown Source)
 at org.jnp.server.Main.initBootstrapListener(Main.java:480)
 at org.jnp.server.Main.start(Main.java:427)

It’s because you have a port already in use. In this case it the port used for Naming service. While changing port from the eclipse editor didn’t work, you can (after stopping the server), open the file


search for the desired port (in this case 1099) and then change it to a new value (in my case 1199 was free).

<!-- Naming Service -->
 <property name="serviceName">jboss:service=Naming</property>
 <property name="bindingName">Port</property>
 <property name="port">1199</property>
 <property name="description">The listening socket for the Naming service</property>

save and start the server.


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