Identifying server node ID in multi-server node environment

If performance issues occur on a portal it might help to determine which server/dispatcher is used to answer requests.
Use the doc below to help you identify the dispatcher/server

Logon to a portal URL https:///irj/portal OR another portal being used
As soon as you have logged on type in the browser window javascript:alert(document.cookie)
This will produce a box similar to the screen shot below






JSESSIONID is a unique ID that you can check in the /usr/sap/SID/JC00/j2ee/cluster/instance.properties this will indicate the server0 used and the dispatcher, particularly useful if multiple web dispatchers are used for Load balancing.