R12: After Upgraded to 12.2.5: Customized Project Home Page Layout Returned Error Page

(Doc ID 2316118.1)

Last updated on OCTOBER 10, 2017

Applies to:

Oracle Project Foundation - Version 12.2.5 and later
Information in this document applies to any platform.

Symptoms

After upgraded from 11.5.10 to R12.2.5:

Customer is using personalizations/customizations on the Projects >> Home page.
When selecting "Tasks" and "Tasks Estimated to Finish" in a page layout from the Projects Home page, the section returns "ERROR PAGE":

"You have encountered an unexpected error. Please contact the System Administrator for assistance."

The Error Page shows:
--------
Exception Details.
oracle.apps.fnd.framework.OAException: java.lang.ClassCastException
at oracle.apps.fnd.framework.OAException.wrapperException(OAException.java:912)
at oracle.apps.fnd.framework.webui.OAPageErrorHandler.prepareException(OAPageErrorHandler.java:1178)
at oracle.apps.fnd.framework.webui.OAPageBean.renderDocument(OAPageBean.java:3616)
at oracle.apps.fnd.framework.webui.OAPageBean.renderDocument(OAPageBean.java:3365)
at _pages.__oa._jspService(__oa.java:252)
at weblogic.servlet.jsp.JspBase.service(JspBase.java:34)
at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)
at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:301)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:184)
at weblogic.servlet.internal.RequestDispatcherImpl.invokeServlet(RequestDispatcherImpl.java:526)
at weblogic.servlet.internal.RequestDispatcherImpl.forward(RequestDispatcherImpl.java:253)
at weblogic.servlet.jsp.PageContextImpl.forward(PageContextImpl.java:159)
at _pages.__oa._jspService(__oa.java:246)
at weblogic.servlet.jsp.JspBase.service(JspBase.java:34)
at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)
at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:301)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:184)
at weblogic.servlet.internal.RequestDispatcherImpl.invokeServlet(RequestDispatcherImpl.java:526)
at weblogic.servlet.internal.RequestDispatcherImpl.forward(RequestDispatcherImpl.java:253)
at weblogic.servlet.jsp.PageContextImpl.forward(PageContextImpl.java:159)
at _pages.__oa._jspService(__oa.java:246)
at weblogic.servlet.jsp.JspBase.service(JspBase.java:34)
at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)
at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:301)
at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:26)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:60)
at oracle.apps.fnd.security.WLFilter.doFilter(WLFilter.java:213)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:60)
at oracle.apps.jtf.cabo.interceptor.JTFWrapperFilter.doFilter(JTFWrapperFilter.java:149)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:60)
at oracle.apps.jtf.base.session.ReleaseResFilter.doFilter(Unknown Source)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:60)
at oracle.apps.fnd.security.AppsServletFilter.doFilter(AppsServletFilter.java:432)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:60)
at oracle.security.jps.ee.http.JpsAbsFilter$1.run(JpsAbsFilter.java:119)
at java.security.AccessController.doPrivileged(Native Method)
at oracle.security.jps.util.JpsSubject.doAsPrivileged(JpsSubject.java:315)
at oracle.security.jps.ee.util.JpsPlatformUtil.runJaasMode(JpsPlatformUtil.java:442)
at oracle.security.jps.ee.http.JpsAbsFilter.runJaasMode(JpsAbsFilter.java:103)
at oracle.security.jps.ee.http.JpsAbsFilter.doFilter(JpsAbsFilter.java:171)
at oracle.security.jps.ee.http.JpsFilter.doFilter(JpsFilter.java:71)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:60)
at oracle.dms.servlet.DMSServletFilter.doFilter(DMSServletFilter.java:139)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:60)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.wrapRun(WebAppServletContext.java:3739)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3705)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:120)
at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2282)
at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2181)
at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1491)
at weblogic.work.ExecuteThread.execute(ExecuteThread.java:256)
at weblogic.work.ExecuteThread.run(ExecuteThread.java:221)
## Detail 0 ##
java.lang.ClassCastException
java.lang.ClassCastException

----------

-This issue happens on any project that has this customized Project Home page layout assigned.
-This is an upgrade and the customizations worked in 11i.

Cause

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