This is Taken from PeopleBooks – PeopleTools 8.49.

TheWebLogic Server console can display a list of established HTTP sessions for that instance of the WebLogic Server. Session Monitoring is automatically enabled for WebLogic. These instructions describe how monitor the single server configuration of PIA. When in production, note that a multi server configuration would be used to perform these steps to the server instance that you intend to monitor, such as PIA1 or PIA2, or both.

1. Start the PIA server.Start the PIA server either using startPIA.cmd(.sh) or, if installed as a Windows service, NET START peoplesoft-PIA.
2. Log on to PeopleSoftLog on to your PeopleSoft application. If possible, log on from a couple different workstations using different PeopleSoft IDs. For the purpose of this test, do not log off.
3. Log on to the WebLogic Server Administrative Console.In a new browser, access the WebLogic Server console at http://weblogichost:port/console and specify the WebLogic administrative ID you specified during the PIA installation. The default ID and password are system/password, respectively.

Read Further:http://psadmin.wordpress.com/2008/10/10/using-weblogic-server-conso...