Crystal Report Causes Application Pool Hang

Question

I have a .Net application deployed to a webserver. The application runs on a dedicated application pool. Crystal Reports XI Release 2 is used to show reports. On a daily basis the application pool becomes hung and needs to be recycled. Upon doing a dump of the hung proccess and analisys of the dump file the following suggestion was shown by the diagnostic tool.
The following threads in w3wp.exe__AppPool #1__PID__28356__Date__05_18_2009__Time_08_42_55AM__711__Manual Dump.dmp are loading C:\Program Files\Business Objects\BusinessObjects Enterprise 11.5\win32_x86\secSSO.dll using the API LoadLibrary. The call to LoadLibrary originated originated from cxlibw_3_1!CXLib301::CSharedLibrary::LoadLibraryHelper+2c
( 11 )
1.01% of threads blocked
Constant calls to LoadLibrary and FreeLibrary can have a serious impact on application performance since the Windows NT Loader takes a global lock while performing this operation causing serialization.
Please follow up with vendor Business Objects for problem resolution concerning the following file: C:\WINDOWS\system32\cxlibw-3-1.dll.
Please advise.

Answer 1

C:\WINDOWS\system32\cxlibw-3-1.dll.
renaming this dll caused crystal reports to no longer work.
it gave this error:
Event code: 3005
Event message: An unhandled exception has occurred.
Event time: 6/4/2009 3:54:07 PM
Event time (UTC): 6/4/2009 7:54:07 PM
Event ID: 6d844a67745642d295a09ad0d69b8976
Event sequence: 897
Event occurrence: 11
Event detail code: 0
Application information:
    Application domain: /LM/W3SVC/1/Root/ICE-8-128886022277968070
    Trust level: Full
    Application Virtual Path: /ICE
    Application Path: C:\Inetpub\wwwroot\ICE\
    Machine name: FOXMETA1
Process information:
    Process ID: 13944
    Process name: w3wp.exe
    Account name: FROF\foxservice
Exception information:
    Exception type: COMException
    Exception message: Creating an instance of the COM component with CLSID {7487987A-DED9-4D16-A5C0-EB6AB3653411} from the IClassFactory failed due to the following error: 80040154.
Request information:
    Request URL: http://foxmeta1/ICE/ReportViewer.aspx?ReportName=Request&RequestID=129262
    Request path: /ICE/ReportViewer.aspx
    User host address: 10.11.3.88
    User: FROF\smoldovanskiy
    Is authenticated: True
    Authentication Type: NTLM
    Thread account name: FROF\foxservice
Thread information:
    Thread ID: 1
    Thread account name: FROF\foxservice
    Is impersonating: True
    Stack trace:    at CrystalDecisions.ReportAppServer.ReportClientDocumentWrapper.CreateRptDoc()
   at CrystalDecisions.ReportAppServer.ReportClientDocumentWrapper..ctor()
   at CrystalDecisions.CrystalReports.Engine.ReportDocument.Initialize()
   at CrystalDecisions.CrystalReports.Engine.ReportDocument..ctor()
   at ICEWebSite.ReportViewer..ctor() in C:\Inetpub\wwwroot\ICE_VSS\FoxRothschild.ICE\ICEWebSite\ReportViewer.aspx.vb:line 18
   at ASP.reportviewer_aspx..ctor()
   at __ASP.FastObjectFactory_app_web_bitpmvry.Create_ASP_reportviewer_aspx()
   at System.Web.Compilation.BuildResultCompiledType.CreateInstance()
   at System.Web.Compilation.BuildManager.CreateInstanceFromVirtualPath(VirtualPath virtualPath, Type requiredBaseType, HttpContext context, Boolean allowCrossApp, Boolean noAssert)
   at System.Web.UI.PageHandlerFactory.GetHandlerHelper(HttpContext context, String requestType, VirtualPath virtualPath, String physicalPath)
   at System.Web.UI.PageHandlerFactory.System.Web.IHttpHandlerFactory2.GetHandler(HttpContext context, String requestType, VirtualPath virtualPath, String physicalPath)
   at System.Web.HttpApplication.MapHttpHandler(HttpContext context, String requestType, VirtualPath path, String pathTranslated, Boolean useAppConfig)
   at System.Web.HttpApplication.MapHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
   at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)
It definetly seems that you need that dll to show the report.
There was another dll there called  C:\WINDOWS\system32\cxlib-3-1.dll renaming that one seems to not do anything.