Webclient Page Expired

Classic Servoy
1

We have a client using web client a lot. They are complaining that the get the page expired a lot.

Is there a way of seeing why this might happen so frequently. The time out is set to 30 minutes so i doubt its that.

the corresponding error message in the log is:

2012-04-19 13:46	http-8085-22	ERROR	com.servoy.j2db.util.Debug	Error rendering the page null
org.apache.wicket.protocol.http.PageExpiredException: Cannot find the rendered page in session [pagemap=wicket-1,componentPath=12:1,versionNumber=5]
     at org.apache.wicket.protocol.http.WebRequestCycleProcessor.resolve(WebRequestCycleProcessor.java:197)
     at com.servoy.j2db.server.headlessclient.WebClientsApplication$5.resolve(WebClientsApplication.java:439)
     at org.apache.wicket.RequestCycle.step(RequestCycle.java:1339)
     at org.apache.wicket.RequestCycle.steps(RequestCycle.java:1465)
     at org.apache.wicket.RequestCycle.request(RequestCycle.java:545)
     at org.apache.wicket.protocol.http.WicketFilter.doGet(WicketFilter.java:486)
     at com.servoy.j2db.server.servlets.Zl.doGet(Zl.java:2)
     at org.apache.wicket.protocol.http.WicketServlet.doGet(WicketServlet.java:138)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
     at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
     at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
     at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
     at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
     at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:567)
     at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
     at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
     at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:849)
     at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
     at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:454)
     at java.lang.Thread.run(Thread.java:680)

David

2

do they use the back button a lot? and maybe also the forward button then again (this last one is not supported by servoy currently)