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Process doesn't run with xp_cmdshell

Posted on 2008-09-30
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Last Modified: 2008-09-30
Dear Experts,

When I run an executable using with the following line, it fails, returning an error message 'Error, could not open output file intermediate\poi.9999':

exec master..xp_cmdshell 'C:\AppData\GrowLive\TomTom\makeov2.exe

When I run this on the command line in windows, it executes fine and produces the desired result.

Can anybody think of a reason it won't execute using xp_cmdshell - I even tried running it as sa and this didn't help.

Thanks

NIck
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Question by:nkewney
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Expert Comment

by:BrandonGalderisi
ID: 22606858
Where is it attemptint to put poi.9999?  Is it possible that the account SQL Server is executing as does not have the privileges to that directory?


run this to find the account

exec master..xp_cmdshell 'set username'

and verify that the returned username has access to that directory.

It it's Network Service or Local System, and the folder it is attempting to write to is on a different share, then you have to enable a proxy account for xp_cmdshell.
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by:nkewney
ID: 22606951
Hi,

Thanks for the reply.

It's sqlservice - which does have full access to the directory.

Nick
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Expert Comment

by:BrandonGalderisi
ID: 22607922
so from xp_cmdshell you can do a dir of that directory?

exec mster..xp_cmdshell 'dir "\\ABCD\Intermediate\poi.9999"'

Where \\ABCD is the parent path of of that folder.
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by:nkewney
ID: 22608176
Hi Brandon,

The directory ' intermediate ' is created then deleted once the process has finished.

Maybe this is causing the problem?

Downloaded FileMon to see what was happening but it wasn't much use.

Nick
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Expert Comment

by:BrandonGalderisi
ID: 22608234
So intermediate is created, but not poi.9999?
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Author Comment

by:nkewney
ID: 22608261
Looks like poi.9999 is the first directory created after intermediate

7:55:44 PM      makeov2.exe:724      CREATE      C:\AppData\TomTom\intermediate\poi.9999      SUCCESS      Options: OverwriteIf  Access: 00120196      
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by:nkewney
ID: 22608267
(this happens when it the process is started from the command prompt)
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Accepted Solution

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BrandonGalderisi earned 2000 total points
ID: 22608300
from the command prompt on the SQL Server, running in the same directory?  xp_cmdshell opens in %systemroot%\system32.  If you application is attempting to write to a relative path, or to a directory that doesn't exist (such as c:\documents and settings\SQLService\ApplicationData\TomTom), it may just not be handling the parent directory not existing.
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by:nkewney
ID: 22608567
Brandon,

That's exactly the issue. It was trying to create directories in c:\Windows\System32

Thank you so much!

Nick
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by:BrandonGalderisi
ID: 22608572
;)
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