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Editorial Team
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Asked: 2026-05-13T17:32:57+00:00

Here’s an odd situation, if I open a command prompt and start the mongrel

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Here’s an odd situation, if I open a command prompt and start the mongrel server then everything works swimmingly. ActiveRecord talks nicely to the MSSQL server using ODBC if I have a User-DSN defined. But if remove the User-DSN and set just an identical System-DSN then odbc bombs:

[Microsoft][ODBC Driver Manager] Data
source name not found and no default
driver specified

I am running Rails on Windows 2003 Server 64bit, using DBI 0.4.1, DBD-ODBC 0.2.4, Rails 2.3.4. I’ve tried using ODBC manager for 32bit and double-checked that the connection is working from the ODBC Administration panel. Does anyone have any ideas?

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1 Answer

  1. Editorial Team

    Frustrating! As it turns out, I had to use regedit to access HKLM/Software/ODBC/ODBC.INI children key (DSN) and changed the SQLServer driver there to be c:\windows\system32\SQLSRV32.dll. Even though the ODBC Administration Panel had this specified and its tests ran fine, it wasn’t working until I tweaked the registry. So odd..

    Hope it helps someone else in the future.

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