Question on Program Hanging
Microsoft
I have a c# program that continually runs 24/7 and performs a variety of
tasks based on a timer.
There is one routine that hangs every Saturday morning without fail. If I
restart the program throughout the week is still hangs. I can restart it
immediatly after the hang and it runs fine until next Saturday.
There is nothing different about Saturday that I can think of.
Any help tracking this down would be appreciated!
Thanks
Robert
Here is the code snip:
af.AddToFile(Constants.c_LogFile,DateTime.Now.ToString() + " Start Grab New
Invoices") ; // Simply writes out to a log file
ds = gds.GrabTheData("NewInvoices"); // ar_GetEmailInvoice01 - Puts data
into a dataset
af.AddToFile(Constants.c_LogFile,DateTime.Now.ToString() + " End Grab New
Invoices") ;
af.AddToFile(Constants.c_LogFile, DateTime.Now.ToString() + " Start For
each");
af.AddToFile(Constants.c_LogFile, DateTime.Now.ToString() + " Start For each
Next");
// ****************************************** HANGS Here or
tempRowCount = ds.Tables[0].Rows.Count;
// ****************************************** HANGS Here
af.AddToFile(Constants.c_LogFile, DateTime.Now.ToString() + " Row Count " +
tempRowCount.ToString() ) ;
foreach (DataRow dr in ds.Tables[0].Rows)
{
af.AddToFile(Constants.c_LogFile,DateTime.Now.ToString() + " Email the
Invoice") ;
CreateInvoice(dr["CustNum"].ToString(),dr["OrdNum"].ToString()) ;
EmailInvoice(dr["CustNum"].ToString(),dr["OrdNum"].ToString()) ;
gds.CustNum = dr["CustNum"].ToString() ;
gds.QuoteNum = dr["OrdNum"].ToString() ;
gds.UpdateTheData("InvoicesEmailed") ;
}
af.AddToFile(Constants.c_LogFile,DateTime.Now.ToString() + " Exiting") ;
Ignacio Machin ( .NET/ C# MVP )
> Hi
>
> I have a c# program that continually runs 24/7 and performs a variety of
> tasks based on a timer.
>
> There is one routine that hangs every Saturday morning without fail. If I
> restart the program throughout the week is still hangs. I can restart it
> immediatly after the hang and it runs fine until next Saturday.
What error are you getting?
Check AppDomain.UnhandledException
Steven Cheng [MSFT]
As for such hang behavior problem, generally, if we can not get clear clus
from code logic, it will require some debugging work on it (such as find
the blocking thread and resource).
Not sure whether you've already read some about managed debugging on
application hang, here are some good blog article about managed debugging:
#.NET Debugging Demos Lab 1: Hang
http://blogs.msdn.com/tess/archive/2008/02/04/net-debugging-demos-lab-1-hang
aspx
#.NET Hang Debugging Walkthrough
http://blogs.msdn.com/tess/archive/2006/10/16/net-hang-debugging-walkthrough
aspx
BTW, as you provided the code snippet and the potential block point, how
did you originally track down to it? Also, it seems there are many method
calls on a custom class, has it accessed any particular resource or objects
that may cause problem?
Sincerely,
Steven Cheng
Microsoft MSDN Online Support Lead
Delighting our customers is our #1 priority. We welcome your comments and
suggestions about how we can improve the support we provide to you. Please
feel free to let my manager know what you think of the level of service
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--------------------
>From: "Microsoft" <Rober...@nospam.nospam>
>Subject: Question on Program Hanging
>Date: Tue, 13 May 2008 12:22:45 -0400
Steven Cheng [MSFT]
Have you got any progress on this issue or does those information help
some? Since such hanging or crash problem is likely to be hard for
troubleshooting, especially in production environment. If you still have no
luck on this and feel it an urgent issue, I would suggest you consider
contacting CSS for incident based support:
Microsoft Customer Support Services (CSS) at
http://msdn.microsoft.com/subscriptions/support/default.aspx.
Sincerely,
Steven Cheng
Microsoft MSDN Online Support Lead
Delighting our customers is our #1 priority. We welcome your comments and
suggestions about how we can improve the support we provide to you. Please
feel free to let my manager know what you think of the level of service
provided. You can send feedback directly to my manager at:
msd...@microsoft.com.
==================================================
Get notification to my posts through email? Please refer to
http://msdn.microsoft.com/subscriptions/managednewsgroups/default.aspx#notif
ications.
==================================================
This posting is provided "AS IS" with no warranties, and confers no rights.
--------------------
>From: stc...@online.microsoft.com (Steven Cheng [MSFT])
>Organization: Microsoft
>Date: Wed, 14 May 2008 04:55:02 GMT
>Subject: RE: Question on Program Hanging
>
>Hi Robert,
>
>As for such hang behavior problem, generally, if we can not get clear clus
>from code logic, it will require some debugging work on it (such as find
>the blocking thread and resource).
>
>Not sure whether you've already read some about managed debugging on
>application hang, here are some good blog article about managed debugging:
>
>#.NET Debugging Demos Lab 1: Hang
>http://blogs.msdn.com/tess/archive/2008/02/04/net-debugging-demos-lab-1-han
g
>.aspx
>
>#.NET Hang Debugging Walkthrough
>http://blogs.msdn.com/tess/archive/2006/10/16/net-hang-debugging-walkthroug
h
>.aspx