Many developers seem to be facing the dreaded 'Hung threads' issue when they you the BO SDK in their java applications.
The symptoms:
The issue usually manifests itself with a line in the SystemOut.log or equivalent reporting the following:
WSVR0605W: Thread "THREAD NAME : ID" (55c8824f) has been active for 600,112 milliseconds and may be hung. There are 1 threads in total in the server that may be hung.
If you do a thread dump in your App Server at this point, you will see something like so:- waiting on <0x93d29020> (a java.lang.Object)
at java.lang.Object.wait(Object.java:429)
at com.crystaldecisions.thirdparty.com.ooc.OB.Downcall.waitUntilCompleted(Downcall.java:831)
- locked <0x93d29020> (a java.lang.Object)
at com.crystaldecisions.thirdparty.com.ooc.OB.GIOPClientWorkerThreaded.receive(GIOPClientWorkerThreaded.java:327)
at com.crystaldecisions.thirdparty.com.ooc.OB.GIOPClientWorkerThreaded.sendReceive(GIOPClientWorkerThreaded.java:353)
at com.crystaldecisions.thirdparty.com.ooc.OB.Downcall.request(Downcall.java:336)
at com.crystaldecisions.thirdparty.com.ooc.OB.DowncallStub.invoke(DowncallStub.java:583)
at com.crystaldecisions.thirdparty.com.ooc.CORBA.Delegate.invoke(Delegate.java:579)
at com.crystaldecisions.thirdparty.org.omg.CORBA.portable.ObjectImpl._invoke(ObjectImpl.java:125)
at com.crystaldecisions.enterprise.ocaframework.idl.OCA.OCAi._InfoStoreEx3Stub.queryEx3(_InfoStoreEx3Stub.java:62)
at com.crystaldecisions.enterprise.ocaframework.j.a(Unknown Source)
at com.crystaldecisions.enterprise.ocaframework.j.find(Unknown Source)
at com.crystaldecisions.enterprise.ocaframework.AbstractServerHandler.buildServerInfo(Unknown Source)
at com.crystaldecisions.enterprise.ocaframework.AbstractServerHandler.buildClusterInfo(Unknown Source)
at com.crystaldecisions.enterprise.ocaframework.aa.for(Unknown Source)
at com.crystaldecisions.enterprise.ocaframework.ServiceMgr.for(Unknown Source)
at com.crystaldecisions.enterprise.ocaframework.o.a(Unknown Source)
at com.crystaldecisions.enterprise.ocaframework.o.a(Unknown Source)
at com.crystaldecisions.enterprise.ocaframework.o.a(Unknown Source)
at com.crystaldecisions.enterprise.ocaframework.p.a(Unknown Source)
at com.crystaldecisions.enterprise.ocaframework.ServiceMgr.getManagedService(Unknown Source)
at com.crystaldecisions.sdk.occa.managedreports.ras.internal.CECORBACommunicationAdapter.connect(Unknown Source)
at com.crystaldecisions.sdk.occa.managedreports.ras.internal.RASReportAppFactory.a(Unknown Source)
at com.crystaldecisions.sdk.occa.managedreports.ras.internal.RASReportAppFactory.a(Unknown Source)
at com.crystaldecisions.sdk.occa.managedreports.ras.internal.RASReportAppFactory.openDocument(Unknown Source)
at com.crystaldecisions.sdk.occa.managedreports.ras.internal.RASReportAppFactory.openDocument(Unknown Source)
at com.talic.pi.utils.ReportingEngine.generateReport(ReportingEngine.java:86)
at com.talic.pi.cms.dao.ReportsDAO.generateReport(ReportsDAO.java:31)
at com.talic.pi.cms.component.ReportGeneratorComponentImpl.generateReport(ReportGeneratorComponentImpl.java:41)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at com.ibm.ws.sca.internal.java.handler.JavaReflectionAdapter$2.run(JavaReflectionAdapter.java:152)
The cause:
This is mainly caused by reports that take a great deal of time to execute causing the application server to report that the processing thread is 'hung'. A worse side effect of this is when the application server runs out of threads and is unable to process any further requests due to these hung threads.
The solution:
The problem is due to the fact that the Corba Timeout has not been set. You've missed the clientSDKOptions.xml in your deployment. This causes the RAS SDK to probably never timeout its call to the RAS.
Create a file called clientSDKOptions.xml and place it in your application's WEB-INF/classes folder, or alternatively, you could place it in a server wide classpath folder like 'applib' on OC4J or $WASPROFILE/properties on WebSphere.
The contents of the file should be as follows:
Restart your app and your done. Your call should now timeout within 2 minutes (something with you can change) and you can say goodbye to your Hung Threads issue.
<CrystalReports.ClientSDKOptions
xmlns:xsi="http://www.w3.org/1999/XMLSchema-instance"
version="2"
xsi:type="CrystalReports.ClientSDKOptions">
<CORBARequestTimeout>120000</CORBARequestTimeout>
</CrystalReports.ClientSDKOptions>
Senin, 29 September 2008
finished already information about Hung Threads with BO SDK - Solution if you mers this information useful for you and want to bookmark or share please use link https://19miracles.blogspot.com/2008/09/hung-threads-with-bo-sdk-solution.html
Tag :
Hung Threads with BO SDK - Solution
By
untu
di
September 29, 2008
Hung Threads with BO SDK - Solution - I made this blog Gadget Miracles already a few years ago, although I am busy working in my office still build this blog for you who need information about gadgets, has very much information that we provide about the Hung Threads with BO SDK - Solution which you are looking for at this time, please refer to the information we provide in full guarantee because I have collected a lot of information from the source of the richest:
Articles : Hung Threads with BO SDK - Solution
full Link : Hung Threads with BO SDK - Solution
Articles : Hung Threads with BO SDK - Solution
full Link : Hung Threads with BO SDK - Solution
You can also see our article on:
Hung Threads with BO SDK - Solution
enough already information about Hung Threads with BO SDK - Solution
hopefully the information Hung Threads with BO SDK - Solution can give you answers to all your questions ayang is conveyed to google.
finished already information about Hung Threads with BO SDK - Solution if you mers this information useful for you and want to bookmark or share please use link https://19miracles.blogspot.com/2008/09/hung-threads-with-bo-sdk-solution.html
Tag :
Tags :
Related : Hung Threads with BO SDK - Solution
Langganan:
Posting Komentar (Atom)
0 komentar:
Posting Komentar