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It is often useful to be able to work out which server node of your SAP NetWeaver Portal cluster you are connected to. For example, if you have an SAP NetWeaver Portal with a SID of ABC, consisting of two dispatchers (central instance 12 and dialog instance 13) each with two server nodes, you could be connected to instance 12 server0 or instance 12 server1 or instance 13 server0 or instance server1. If you are having some problems, the support people in your organization will need to know which server node to start looking at.  This blog will describe a code fragment that can be used in a portal component to present details of the current server node that you are connected to.  The good news is that most of the values we need to display are available as System properties, and so can be accessed via: String SID = System.getProperty("SAPSYSTEMNAME").toString(); String num = System.getProperty("SAPSYSTEM").toString(); String dir = System.getProperty("user.dir").toString(); String sep = System.getProperty("file.separator").toString(); dir = dir.substring(1+dir.lastIndexOf(sep)); String me = System.getProperty("SAPMYNAME").toString(); me = me.substring(0,me.indexOf("_")); We use the file.system property to work out if we are on a Windows or Unix type system, and then use that to skip to the last part of the user.dir property, whcih shows us if we are on server0, server1 etc…  To get our node number is a bit more complicated, and requires we find a property created as part of the use of DSR (Distributed Statistics Records). The property name contains the node ID, so we get a list of all the properties and run through the list finding a name that matches that node name…  Here’s the code… String node = ""; Enumeration props = System.getProperties().keys(); while (props.hasMoreElements()) {      String thisProp = props.nextElement().toString();      if (thisProp.startsWith("dsr."+me+"_") && thisProp.endsWith(".buffersize"))      node = thisProp.substring(5+thisProp.indexOf("_"+SID+"_"),thisProp.lastIndexOf("_")); } Now we need to present the details – I’ll use some HTMLB structures, so remember to include an appropriate ServicesReference definition in portalapp.xml… IPageContext myContext; myContext = PageContextFactory.createPageContext(request, response); Form myForm =      myContext.createFormDocument("Where am I running?");  Group mySID = new Group(); mySID.setTitle("SID: "+SID); mySID.setWidth("300");  Group host = new Group(); host.setTitle("Host: "+me); host.setWidth("300"); mySID.addComponent(host);            Group myGroup = new Group(); host.addComponent(myGroup); myGroup.setWidth("350"); myGroup.setTitle("Instance number: "+num); myGroup.setDesign(GroupDesign.SAPCOLOR); myForm.addComponent(mySID);  GridLayout gl = new GridLayout(); myGroup.addComponent(gl); int row = 1;            InputField ifHere = new InputField("here"); ifHere.setString("You are here"); ifHere.setTooltip("standort"); ifHere.setEnabled(false); InputField ifServer = new InputField("server"); ifServer.setString(dir); ifServer.setEnabled(false); Label label = new Label("Server number"); ifServer.setLabel(label); gl.addComponent(row, 1, label); gl.addComponent(row, 2, ifServer); gl.addComponent(row, 3, ifHere);                                                               row++; InputField ifNode = new InputField("node"); ifNode.setString(node); ifNode.setEnabled(false); label = new Label("Node number"); ifNode.setLabel(label); gl.addComponent(row, 1, label); gl.addComponent(row, 2, ifNode); gl.addComponent(row, 3, ifHere);                                               myContext.render(); When run, it should look similar to: image
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    1. Michael Nicholls Post author
      This code is part of a bigger PAR file that I’m not ready to share yet. So, I’m afraid you’ll need to build your own project etc.
  1. Pran Bhas
    You could also type in javascript:document.cookie into your browser session and check the value for the cookie saplb_* , this usually displays the Node id. A simple javascript with a regexp should do it.
    1. Michael Nicholls Post author
      Yes, there are lots of existing examples of getting the server node details, but I wanted something easy for the average end user to run!

      Asking them to enter javascript commands and decrypt cookie details or navigate to administrator options isn’t very friendly…

      A simple iView under their portal role probably makes more sense.

  2. Karsten Geiseler
    Hi Michael,

    you don’t have to query system properties, there is also a portal service that you can ask for details like server name, node id, etc..

    It’s called IClusterInformation

    regards, Karsten


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