2558158 - Different errors when executing performance tests in the portal server

While performing load testing on the SAP Enterprise Portal by using an external tool, different errors may appear in the default traces, such as:

#Error#com.sap.tc.webdynpro.sessionmanagement#
#BC-WD-JAV#tc~wd~webdynpro#...#...#sap.com/pb#com.sap.tc.webdynpro.sessionmanagement.ExceptionHandler.handleExpiration#Guest#0##...#...##0#Thread[HTTP Worker [@...],5,Dedicated_Application_Thread]#Plain##
Failed to show error page for session expiration. RID=<rid_hash_value>
[EXCEPTION]
java.lang.SecurityException: User not authorized.
at com.sap.engine.services.adminadapter.server.AuthorizationChecker.checkAuthorization(AuthorizationChecker.java:115)

...

#Error#com.sap.engine.services.servlets_jsp.ISE500#
com.sap.ASJ.web.000500#EP-PIN-PB-WD#sap.com/pb#...#...#sap.com/pb#com.sap.engine.services.servlets_jsp.ISE500#Guest#0##...#...##0#Thread[HTTP Worker [@...],5,Dedicated_Application_Thread]#Plain##
500 Internal Server Error is returned for HTTP request [<protocol>://<host>:<port>/webdynpro/resources/sap.com/pb/PageBuilder]:
component [dispatcher],
web module [webdynpro/resources/sap.com/pb],
application [sap.com/pb],
DC name [sap.com/pb],
CSN component[EP-PIN-PB-WD],
problem categorization [],
internal categorization [#].

[EXCEPTION]
com.sap.tc.webdynpro.services.exceptions.WDRuntimeException: Exception was thrown in preprocessing phase of application session <session_ID>. The causing exception is nested. RID=<rid_ID>
       at com.sap.tc.webdynpro.clientserver.session.ApplicationSession.doPreprocessing(ApplicationSession.java:665)
...
       at com.sap.engine.core.thread.execution.CentralExecutor$SingleThread.run(CentralExecutor.java:328)
Caused by: com.sap.tc.webdynpro.services.exceptions.ApplicationFaultException: wdDoInit: exception thrown in this user coding area
       at com.sap.tc.webdynpro.progmodel.generation.DelegatingComponent.doInit(DelegatingComponent.java:164)
...

Error#com.sap.engine.services.webdynpro#
#BC-WD-JAV#tc~wd~webdynpro#...#...#...#...#<path>/<app>#com.sap.engine.services.webdynpro#...#...#...#...##...#...#...#...##0#Thread[HTTP Worker [@...],5,Dedicated_Application_Thread]#Plain##
Cannot remove session data: com.sap.tc.webdynpro.session_...#..._...#...--...#...--/pcd:<application path inside the portal> for domain: <application's webdynpro resources path>
[EXCEPTION]
com.sap.engine.session.UserIsLoggingOutException: User is logging out at the moment.
Session Domain = <application's webdynpro resources path> sessionId = <session_id> chunk name = com.sap.tc.webdynpro.session_<session_id>--/pcd:<application path inside the portal>
at com.sap.engine.session.exec.SessionExecContext.removeSessionChunk(SessionExecContext.java:655)

• SAP NetWeaver Application Server Java
• SAP Enterprise Portal

performance; load; test; exhaust; loadtest; stresstest; stress; batch; exhaustion; performancetest; , KBA , BC-JAS-COR-SES , Session Management , BC-WD-JAV , WebDynpro Java , EP-PIN-PB-WD , WD Page Builder , Problem