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1636139 - 500 internal server error occurs due to maximum HTTP session limit or web dynpro standalone application sessions limit has been reached

Symptom

  • Users receive "500 internal server" error or "HTTP 401 Unauthorized" error when accessing JAVA applications due to maximum HTTP session limit has been reached. 
  • For example, you may receive an exception similar to the below:
    "The maximum number of application sessions for this user session has been exceeded. At least one of the running application sessions must be closed before a new one can be started."
    wd-sessions-error.png
  • The server node default trace contains an entry:
    "com.sap.engine.services.servlets_jsp.server.exceptions.NewApplicationSessionException: Cannot create a new application session because the maximum number of HTTP sessions has been reached."

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Environment

  • SAP Netweaver AS JAVA 7.1X.
  • SAP Netweaver AS JAVA 7.20.
  • SAP Netweaver AS JAVA 7.3X.
  • SAP Netweaver AS JAVA 7.40.
  • SAP Netweaver AS JAVA 7.50.

Product

SAP NetWeaver 7.3 ; SAP NetWeaver 7.4 ; SAP NetWeaver 7.5 ; SAP NetWeaver Application Server for Java 7.1 ; SAP NetWeaver Application Server for Java 7.2 ; SAP enhancement package 1 for SAP NetWeaver 7.3 ; SAP enhancement package 1 for SAP NetWeaver Application Server for Java 7.1

Keywords

 403, 500, forbidden, internal, server, error, fatal, crash, fail, failure, blank, screen, sap, user, logon, login, netweaver, application, server, java, as, page, builder, pb, wdj, wd, web, dynpro, java, webdynpro, max, netweaver, nw, administrator, admin, ep, enterprise, portal , KBA , BC-JAS-COR-SES , Session Management , BC-JAS-COR , Enterprise Runtime, Core J2EE Framework , BC-JAS-WEB , Web Container, HTTP, JavaMail, Servlets , BC-WD-JAV , Web Dynpro Java , EP-PIN-AI , Application Integration , EP-PIN-PRT , Portal Runtime , BC-WD-UR , Unified Rendering , Problem

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