ViewExpiredExceptionが発生した場合（開発中はTomcatの作業ディレクトリをクリーンアップしてこれを強制します）、PrimeFacesのAJAXリクエスト後にFullAjaxExceptionHandlerがエラーページにリダイレクトされません。以下のスタックトレースを参照してください。
GRAVE: FullAjaxExceptionHandler: An exception occurred during processing JSF ajax request. Error page '/Erro.jsf' will be shown.
javax.faces.application.ViewExpiredException: viewId:/PesquisaBeneficiario.jsf - A exibição de /PesquisaBeneficiario.jsf não pôde ser restaurada.
at com.sun.faces.lifecycle.RestoreViewPhase.execute(RestoreViewPhase.java:205)
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
at com.sun.faces.lifecycle.RestoreViewPhase.doPhase(RestoreViewPhase.java:116)
at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:593)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at br.com.bb.sgn.jsf.util.FiltroDesabilitaCacheNavegador.doFilter(FiltroDesabilitaCacheNavegador.java:30)
at org.omnifaces.filter.HttpFilter.doFilter(HttpFilter.java:75)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.omnifaces.filter.FacesExceptionFilter.doFilter(FacesExceptionFilter.java:56)
at org.omnifaces.filter.HttpFilter.doFilter(HttpFilter.java:75)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at br.com.bb.sgn.jsf.util.sso.FiltroSeguranca.doFilter(FiltroSeguranca.java:140)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:224)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:169)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:928)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:987)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:539)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:298)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)
そして、私はエラーページを次のように登録しました：
<error-page>
<exception-type>java.lang.Throwable</exception-type>
<location>/Erro.jsf</location>
</error-page>
質問stackoverflow.com/questions/15320192/jsf-error-page-not-shown-when-viewexpiredexception-occursを確認し、OmniFacesを1.4.1バージョンに更新しました。
足りないものはありますか？ありがとう。
PS：Mojarra-2.1.20、OmniFaces-1.4.1、PrimeFaces-3.5