Sysadmin Worklist Login Error Message: You have encountered an unexpected error java.lang.ClassCastException: oracle.apps.fnd.framework.server.OANullDBTransactionImpl cannot be cast to oracle.apps.fnd.framework.server.OADBTransactionImpl (Doc ID 1999801.1)

Last updated on DECEMBER 18, 2015

Applies to:

Oracle Workflow - Version 12.2.3 to 12.2.4 [Release 12.2]
Oracle Financials Accounting Hub - Version 12.2.4 to 12.2.4 [Release 12.2]
Information in this document applies to any platform.

Symptoms

Using the Oracle Applications Release 12.2.3:
after applying patch 17909318, seeing a sporadic error on the home page showing:

Encountered An Error In The Worklist Notifications

Upon review of the java stack, the following error was found:

Error Page
Exception Details.
 oracle.apps.fnd.framework.OAException: java.lang.ClassCastException: oracle.apps.fnd.framework.server.OANullDBTransactionImpl cannot be cast to oracle.apps.fnd.framework.server.OADBTransactionImpl
at oracle.apps.fnd.framework.OAException.wrapperException(OAException.java:912)
at oracle.apps.fnd.framework.webui.OAPageErrorHandler.prepareException(OAPageErrorHandler.java:1169)
at oracle.apps.fnd.framework.webui.OAPageBean.renderDocument(OAPageBean.java:3483)
at oracle.apps.fnd.framework.webui.OAPageBean.renderDocument(OAPageBean.java:3237)
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:141)
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.E

 
Workaround
Refresh the browser

Changes
Applied patch 17909318

Changes

Previously in 12.1X release, an workaround was in place that cannot be forward to 
release 12.2.x because of the dependencies on OC4J libraries

Cause

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