FIX: SQLRowCount Returns -1 After Insertion of a BLOB >= 400K

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This article was previously published under Q252948

BUG #: 54818 (SQLBUG_70)

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SYMPTOMS

After inserting 400K or more of data for a text or image column, a call to the ODBC SQLRowCount function incorrectly returns -1, if the following conditions are met:

You use the Microsoft ODBC Driver for SQL Server, version 3.7.
The backend is Microsoft SQL Server 7.0 or later.

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CAUSE

If the amount of data that needs to be inserted is more than 400K, the ODBC Driver for SQL Server switches to another mechanism to insert the data.

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WORKAROUND

Run the ODBCCMPT utility against your ODBC application. For more information, refer to Microsoft SQL Server 7.0 Books Online or the following Web address:

http://msdn.microsoft.com/library/psdk/sql/4_opingc.htm (http://msdn.microsoft.com/library/psdk/sql/4_opingc.htm)

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STATUS

Microsoft has confirmed this to be a problem in the Microsoft ODBC Driver for SQL Server, version 3.7.

This bug was corrected in SQL Server 7.0 Service Pack 2.

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Because Microsoft Access 97 uses the SQLRowCount function to verify a successful INSERT, the following error message occurs when you try to insert BLOB data that is 400K or more into an attached SQL Server table:

ODBC - Insert on a linked table 'table name' failed.

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APPLIES TO

Microsoft ODBC Driver for Microsoft SQL Server 3.7

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kbbug kbfix kbqfe KB252948

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Retired KB Content Disclaimer

This article was written about products for which Microsoft no longer offers support. Therefore, this article is offered "as is" and will no longer be updated.

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