3793742 - Enterprise Portal: Intermittent "Portal runtime error" (HTTP 500) in Application Integrator iViews due to UME cache/UserMappingNotAvailableException

• Intermittent “Portal runtime error” occurs when launching application integration iViews in Enterprise Portal. 
• Issue reproduces randomly across supported browsers.
• On-screen message: 
  “Portal runtime error.
  An exception occurred while processing your request. Send the exception ID to your portal administrator.
  Exception ID: hh:mm_dd/mm/yy_2334_<node_id>
  See log file for details about this exception
• Network trace shows HTTP 500 response to requests to /irj/servlet/prt/portal/prtroot/pcd!3aportal_content...
• DefaultTrace contains the following entries:
  • #2.0#<TimeStamp>#+0800#Error#com.sap.security.core.umap.imp.UserMapping#
    #BC-JAS-SEC-UME#com.sap.security.core.sda#C0000AB680541575000000000000058C#173250951000000004#sap.com/com.sap.portal.appintegrator.sap#com.sap.security.core.umap.imp.UserMapping.getMasterKey()#<USER>#1052##11A3E3A26F9011F1C1EA00000A539987#8d0cceed6f8b11f1afe900000a539987##0#Thread[HTTP Worker [@1958417098],5,Dedicated_Application_Thread]#Plain##
    A user mapping method is called which requires that user mapping has been initialized (i.e. told about a potentially existing cryptographic master key), but user mapping initialization has not been performed yet.
    [EXCEPTION]
    com.sap.security.api.umap.UserMappingNotAvailableException: A user mapping method is called which requires that user mapping has been initialized (i.e. told about a potentially existing cryptographic master key), but user mapping initialization has not been performed yet.
  • #2.0#<TimeStamp>#+0800#Error#com.sap.portal.prt.connection#
    #EP-PIN-PRT#tc~epbc~prtc~api#C0000AB680541576000000020000058C#173250951000000004#sap.com/irj#com.sap.portal.prt.connection#<USER>#1052##11A3E3A26F9011F1C1EA00000A539987#8d1091cc6f8b11f198b900000a539987##0#Thread[HTTP Worker [@1481949961],5,Dedicated_Application_Thread]#Plain##
    Exception ID:<EXCEPTION_ID>
    [EXCEPTION]
    com.sapportals.portal.prt.component.PortalComponentException: Error in service call of Portal Component
    Application name : com.sap.portal.appintegrator.sap
    Component : <Component>
    Component class : com.sapportals.portal.sapapplication.SAPApplicationIntegratorComponent
    User :<USER>
  • Caused by: com.sapportals.portal.prt.runtime.PortalRuntimeException: Exception in SAP Application Integrator occured: Exception occured in layer WebDynpro/ABAPSSOLayer
  • Caused by: com.sapportals.portal.appintegrator.ApplicationIntegratorException: Exception occured in layer WebDynpro/ABAPSSOLayer
  • Caused by: com.sap.security.api.umap.UserMappingNotAvailableException: A user mapping method is called which requires that user mapping has been initialized (i.e. told about a potentially existing cryptographic master key), but user mapping initialization has not been performed yet.

• SAP NetWeaver Application Server for Java
• SAP Enterprise Portal
• User Management Engine (UME)

portal runtime error, enterprise portal, intermittent, http 500, UserMappingNotAvailableException, UME cache, user mapping, web dynpro abap sso, application integrator, defaultTrace, exception id, webdynpro 500 internal server error , KBA , BC-JAS-SEC-UME , User Management Engine , EP-PIN-PRT , Portal Runtime , EP-PIN-NAV , Navigation , Problem