I am working on APEX (apex_5.0.3) installed on Oracle Database 12c, configured to run on ORDS 3.0.5.124.10.54 using Weblogic Server 12c.
DispatcherNotFoundException [statusCode=404, reasons=[]]
at oracle.dbtools.http.entrypoint.Dispatcher.choose(Dispatcher.java:86)
at oracle.dbtools.http.entrypoint.Dispatcher.dispatch(Dispatcher.java:97)
at oracle.dbtools.http.entrypoint.EntryPoint$FilteredServlet.service(EntryPoint.java:243)
at oracle.dbtools.http.filters.FilterChainImpl.doFilter(FilterChainImpl.java:73)
at oracle.dbtools.http.forwarding.QueryFilteringRewrite.doFilter(QueryFilteringRewrite.java:89)
at oracle.dbtools.http.filters.HttpFilter.doFilter(HttpFilter.java:46)
at oracle.dbtools.http.filters.FilterChainImpl.doFilter(FilterChainImpl.java:64)
at oracle.dbtools.http.forwarding.ForwardingFilter.doFilter(ForwardingFilter.java:59)
at oracle.dbtools.http.filters.HttpFilter.doFilter(HttpFilter.java:46)
at oracle.dbtools.http.filters.FilterChainImpl.doFilter(FilterChainImpl.java:64)
at oracle.dbtools.http.cors.CORSPreflightFilter.doFilter(CORSPreflightFilter.java:67)
at oracle.dbtools.http.filters.HttpFilter.doFilter(HttpFilter.java:46)
at oracle.dbtools.http.filters.FilterChainImpl.doFilter(FilterChainImpl.java:64)
at oracle.dbtools.http.cookies.auth.CookieSessionCSRFFilter.doFilter(CookieSessionCSRFFilter.java:77)
at oracle.dbtools.http.filters.HttpFilter.doFilter(HttpFilter.java:46)
at oracle.dbtools.http.filters.FilterChainImpl.doFilter(FilterChainImpl.java:64)
at oracle.dbtools.http.auth.AuthenticationFilter.authenticate(AuthenticationFilter.java:89)
at oracle.dbtools.http.auth.AuthenticationFilter.doFilter(AuthenticationFilter.java:62)
at oracle.dbtools.http.filters.HttpFilter.doFilter(HttpFilter.java:46)
at oracle.dbtools.http.filters.FilterChainImpl.doFilter(FilterChainImpl.java:64)
at oracle.dbtools.url.mapping.RequestMapperBase.doFilter(RequestMapperBase.java:53)
at oracle.dbtools.url.mapping.CompositeMapper$RequestMapperFilterChain.doFilter(CompositeMapper.java:144)
at oracle.dbtools.url.mapping.RequestMapperBase.doFilter(RequestMapperBase.java:53)
at oracle.dbtools.url.mapping.CompositeMapper.doFilter(CompositeMapper.java:37)
at oracle.dbtools.url.mapping.URLMappingBase.doFilter(URLMappingBase.java:89)
at oracle.dbtools.url.mapping.filter.URLMappingFilter.doFilter(URLMappingFilter.java:83)
at oracle.dbtools.http.filters.HttpFilter.doFilter(HttpFilter.java:46)
at oracle.dbtools.http.filters.FilterChainImpl.doFilter(FilterChainImpl.java:64)
at oracle.dbtools.http.locale.LocaleFilter.doFilter(LocaleFilter.java:59)
at oracle.dbtools.http.filters.HttpFilter.doFilter(HttpFilter.java:46)
at oracle.dbtools.http.filters.FilterChainImpl.doFilter(FilterChainImpl.java:64)
at oracle.dbtools.http.cors.CORSResponseFilter.doFilter(CORSResponseFilter.java:83)
at oracle.dbtools.http.filters.HttpResponseFilter.doFilter(HttpResponseFilter.java:45)
at oracle.dbtools.http.filters.FilterChainImpl.doFilter(FilterChainImpl.java:64)
at oracle.dbtools.http.errors.ErrorPageFilter.doFilter(ErrorPageFilter.java:81)
at oracle.dbtools.http.filters.HttpFilter.doFilter(HttpFilter.java:46)
at oracle.dbtools.http.filters.FilterChainImpl.doFilter(FilterChainImpl.java:64)
at oracle.dbtools.http.auth.ForceAuthFilter.doFilter(ForceAuthFilter.java:44)
at oracle.dbtools.http.filters.HttpFilter.doFilter(HttpFilter.java:46)
at oracle.dbtools.http.filters.FilterChainImpl.doFilter(FilterChainImpl.java:64)
at oracle.dbtools.http.filters.Filters.filter(Filters.java:47)
at oracle.dbtools.http.entrypoint.EntryPoint.service(EntryPoint.java:85)
at oracle.dbtools.http.entrypoint.EntryPointServlet.service(EntryPointServlet.java:49)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
at oracle.dbtools.rt.web.HttpEndpointBase.dispatchableServices(HttpEndpointBase.java:123)
at oracle.dbtools.rt.web.HttpEndpointBase.service(HttpEndpointBase.java:85)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:286)
at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:260)
at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:137)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:350)
at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:25)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:78)
at oracle.security.jps.ee.http.JpsAbsFilter$1.run(JpsAbsFilter.java:141)
at java.security.AccessController.doPrivileged(Native Method)
at oracle.security.jps.util.JpsSubject.doAsPrivileged(JpsSubject.java:315)
at oracle.security.jps.ee.util.JpsPlatformUtil.runJaasMode(JpsPlatformUtil.java:649)
at oracle.security.jps.ee.http.JpsAbsFilter.runJaasMode(JpsAbsFilter.java:124)
at oracle.security.jps.ee.http.JpsAbsFilter.doFilter(JpsAbsFilter.java:232)
at oracle.security.jps.ee.http.JpsFilter.doFilter(JpsFilter.java:94)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:78)
at oracle.dms.servlet.DMSServletFilter.doFilter(DMSServletFilter.java:224)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:78)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.wrapRun(WebAppServletContext.java:3654)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3620)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:326)
at weblogic.security.service.SecurityManager.runAsForUserCode(SecurityManager.java:196)
at weblogic.servlet.provider.WlsSecurityProvider.runAsForUserCode(WlsSecurityProvider.java:203)
at weblogic.servlet.provider.WlsSubjectHandle.run(WlsSubjectHandle.java:71)
at weblogic.servlet.internal.WebAppServletContext.doSecuredExecute(WebAppServletContext.java:2423)
at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2280)
at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2258)
at weblogic.servlet.internal.ServletRequestImpl.runInternal(ServletRequestImpl.java:1626)
at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1586)
at weblogic.servlet.provider.ContainerSupportProviderImpl$WlsRequestExecutor.run(ContainerSupportProviderImpl.java:270)
at weblogic.invocation.ComponentInvocationContextManager._runAs(ComponentInvocationContextManager.java:348)
at weblogic.invocation.ComponentInvocationContextManager.runAs(ComponentInvocationContextManager.java:333)
at weblogic.work.LivePartitionUtility.doRunWorkUnderContext(LivePartitionUtility.java:54)
at weblogic.work.PartitionUtility.runWorkUnderContext(PartitionUtility.java:41)
at weblogic.work.SelfTuningWorkManagerImpl.runWorkUnderContext(SelfTuningWorkManagerImpl.java:617)
at weblogic.work.ExecuteThread.execute(ExecuteThread.java:397)
at weblogic.work.ExecuteThread.run(ExecuteThread.java:346)