FIX: Load Delays When Debugging ODBC Applications in Visual C++

ID: Q220863

The information in this article applies to:

Microsoft Data Access Components version 2.0

SYMPTOMS

When you debug an application that uses ODBC in the Visual C++ debugger, the debugger appears to hang for a period of time when loading ODBCINT.dll.

CAUSE

The release version of ODBCINT.dll that ships with MDAC 2.0 contains the following debug string:


L:\Beacon\RES\US\ODBCLAN\ndebug32\ODBCINT.pdb

When you load ODBCINT.dll in the debugger, the debugger attempts to locate this file. If you have an L: drive mapped on the computer, a network delay occurs while the file system looks for this file.

Note that this delay does not occur with any ODBC application running in release mode.

RESOLUTION

You can avoid the delay when using MDAC 2.0 by either unmapping the L: drive, or by opening the ODBCINT.dll in a hex editor and changing the one instance of L: to some other drive letter that you know is not mapped on your system.

STATUS

Microsoft has confirmed this to be a bug in the Microsoft products listed at the beginning of this article. This bug was corrected in Microsoft Data Access Components 2.1.

MORE INFORMATION

Share your A: floppy drive as A and then map your L: drive to \\machinename\A. Run any ODBC application in the Visual C++ debugger. Notice that the A: drive spins indicating that the L: drive was accessed when ODBCINT.dll is loaded.

Additional query words:

Keywords : kbDatabase kbODBC kbSDKDataAc200bug kbSDKDataAc210fix kbGrpMDAC
Version : WINDOWS:2.0
Platform : WINDOWS
Issue type : kbbug