Error Code: 500 After Changing to Load Balancer IP (Doc ID 3062149.1)

Last updated on DECEMBER 09, 2024

Applies to:

Symptoms

When switching to Load Balancer IP from Single Server IP found the following error upon login.

Error:
Error Page Exception
SRVE0260E: The server cannot use the error page specified for your application to handle the Original Exception printed below.

Original Exception:
Error Message: java.lang.NullPointerException
Error Code: 500
Target Servlet: /auth/validldaplog.jsp
Error Stack:
java.lang.NullPointerException
at com.ibm._jsp._validldaplogin._jspService(_validldaplogin.java:771)
at com.ibm.ws.jsp.runtime.HttpJspBase.service(HttpJspBase.java:99)

F12 shows error below:
500 Internal Server Error
This attempt to set a cookie via a Set-Cookie header was blocked because its Domain attribute was invalid with regards to the current host url

SystemOut.log

[11/19/24 14:32:29:814 TRT] 00000375 LocalTranCoor E WLTC0017E: Resources rolled back due to setRollbackOnly() being called.
[11/19/24 14:32:29:814 TRT] 00000375 webapp E com.ibm.ws.webcontainer.webapp.WebApp reportRecursiveError Error Page Exception:
[11/19/24 14:39:32:824 TRT] 000001e7 ServletWrappe E com.ibm.ws.webcontainer.servlet.ServletWrapper service SRVE0068E: An exception was thrown by one of the service methods of the servlet [/auth/validldaplogin.jsp] in application [ofsaepm]. Exception created : [java.lang.NullPointerException
at com.ibm._jsp._validldaplogin._jspService(_validldaplogin.java:771)
at com.ibm.ws.jsp.runtime.HttpJspBase.service(HttpJspBase.java:99)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)

Steps To Replicate:
1. Changed Web_Server_IP_Address to load balancer DNS address in DefaultPorts.properties file and run PortC.sh then recreated ear and deployed ear to webserver.
2. Add AllowHosts as mentioned on page 11 step 4b in OFSAA Configuration for High Availability (HA) Best Practices Guide before recreating ear file.

Cause

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