HTTP-500 Internal Server Error On Clicking DAS Login Link (1) (Doc ID 343840.1)

Last updated on MARCH 08, 2017

Applies to:

Oracle Application Server Single Sign-On - Version 9.0.4 to 10.1.2 [Release 10gR1 to 10gR2]
Information in this document applies to any platform.
This problem can occur on any platform.
***Checked for relevance on 19-Mar-2013***

Symptoms

A custom login page has been configured for SSO, but HTTP-500 Internal Server Error occurs in the browser when the Login link is clicked in DAS.

Error in ssoServer.log:

 [DEBUG] AJPRequestHandler-ApplicationServerThread-7 Requesting Login Page to collect credentials
 [DEBUG] AJPRequestHandler-ApplicationServerThread-7 entry: getUserCredentialPage
 [ERROR] AJPRequestHandler-ApplicationServerThread-7 Unexpected Exception received
java.lang.NullPointerException
    at oracle.security.sso.server.auth.SSOServerAuth.getUserCredentialPage(SSOServerAuth.java:710)
    at oracle.security.sso.server.ui.SSOLoginServlet.processSSOPartnerRequest(SSOLoginServlet.java:970)
    at oracle.security.sso.server.ui.SSOLoginServlet.doPost(SSOLoginServlet.java:326)
    at oracle.security.sso.server.ui.SSOLoginServlet.doGet(SSOLoginServlet.java:283)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
    at com.evermind.server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:810)
    at com.evermind.server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:322)
    at com.evermind.server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:790)
    at com.evermind.server.http.AJPRequestHandler.run(AJPRequestHandler.java:208)
    at com.evermind.server.http.AJPRequestHandler.run(AJPRequestHandler.java:125)
    at com.evermind.util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:192)
    at java.lang.Thread.run(Thread.java:534)
AJPRequestHandler-ApplicationServerThread-7 Leaving doPost method

Cause

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