POP QUIZ: SOS not loading properly

DotNetKicks.com — Tue, 08 Apr 2008 16:49:42 GMT

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re: POP QUIZ: SOS not loading properly

Eber Irigoyen — Tue, 08 Apr 2008 21:04:28 GMT

shooting in the dark... you loaded a 64bit dump

re: POP QUIZ: SOS not loading properly

Christopher_G_Lewis — Tue, 08 Apr 2008 21:12:32 GMT

Just from the "x64" in the path I'd suspect a bitness mis-match - 32 bit debugger trying to load x64 SOS.

No justification from the ".cordll -ve -u -l" command, just a hunch.

re: POP QUIZ: SOS not loading properly

Josh Coswell — Tue, 08 Apr 2008 22:47:40 GMT

This gives me more insight into function of sos.dll

Josh Coswell

http://riverasp.net

re: POP QUIZ: SOS not loading properly

Bill Menees — Wed, 09 Apr 2008 15:29:44 GMT

1. The current machine has a different revision of .NET 2.0 than the machine the dump was taken on. See the following article for a list of some of the .NET 2.0 revisions: http://blogs.msdn.com/dougste/archive/2007/09/06/version-history-of-the-clr-2-0.aspx

2. The current machine has revision 1433, which is .NET 2.0 SP1. The dump machine only had revision 926, which was a pre-SP1 hotfix.

3. DLL description for mscordacwks: Microsoft .NET External Data Access Support

4. In theory, you can copy the mscordacwks.dll from the dump machine into your local machine's symbol path and rename it to have the architecture and version in the file name. In practice, this only works for me about half the time. The other half I just end up cussing a lot because SOS is so fragile with respect to DLL revisions. :-( I'm hoping you can tell me a procedure that will make these situations debuggable 100% of the time.

Bill Menees

re: POP QUIZ: SOS not loading properly

Tom — Wed, 09 Apr 2008 16:22:36 GMT

Bill,

I posted the answer. If this doesn't give you enough, I am going to be making another post in the next few days going into more detail of how to get this to work.

ASP.NET Tips: Getting SOS to work when commands fail

ASP.NET Debugging — Wed, 09 Apr 2008 21:43:05 GMT

So the last quiz asked about a common error message you may see when debugging a dump from .NET on a

re: POP QUIZ: SOS not loading properly

Tom — Wed, 09 Apr 2008 21:45:17 GMT

Bill,

Check out http://blogs.msdn.com/tom/archive/2008/04/09/asp-net-tips-getting-sos-to-work-when-commands-fail.aspx

re: POP QUIZ: SOS not loading properly

Bill Menees — Thu, 10 Apr 2008 19:00:23 GMT

Thanks, Tom. I figured out why it wasn't working for me half the time: User Error. When I copied the 1434 version from a Windows 2008 box, I accidentally renamed the file as this:

mscordacwks.dll_x86_x86_2.0.50727.1434.dll

But it should have been this:

mscordacwks_x86_x86_2.0.50727.1434.dll

without the ".dll" immediately after "mscordacwks".

After reading through your articles and still not getting it to work with my existing dll, I decided to step back and look for a simpler explanation for my problem. On a careful redo, I finally noticed my renaming error. Hopefully, I won't make that mistake again. :-)

Thanks again for providing the blog articles. It's nice to have this stuff documented.

re: POP QUIZ: SOS not loading properly

Tom — Thu, 10 Apr 2008 19:05:35 GMT

that is a very good point Bill. You have to be very careful with the rename or it won't find the correct file.