title: Error "java.net.SocketException: Too many open files" at deployment phase in jboss-portal-2.7.2
body: <p>When start the jboss-portal-2.7.2 at some point in the log message:</p>
  
  <pre><code>2013-01-30 20:32:02,541 ERROR [org.apache.tomcat.util.net.JIoEndpoint] Socket accept failed
  java.net.SocketException: Too many open files
          at java.net.PlainSocketImpl.socketAccept(Native Method)
          at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:408)
          at java.net.ServerSocket.implAccept(ServerSocket.java:462)
          at java.net.ServerSocket.accept(ServerSocket.java:430)
          at org.apache.tomcat.util.net.DefaultServerSocketFactory.acceptSocket(DefaultServerSocketFactory.java:61)
          at org.apache.tomcat.util.net.JIoEndpoint$Acceptor.run(JIoEndpoint.java:309)
          at java.lang.Thread.run(Thread.java:662)
  </code></pre>
  
  <p>In the deploy folder a total of 20. war modules. Any solutions?</p>