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In a C++ Microsoft Jet DAO MFC (CDao) application, insertions and updates may not work on a computer that is running Windows Vista Service Pack 1 (SP1) or Windows Server 2008. Additionally, you may receive the following error message:
The field is too small to accept the amount of data you attempted to add. Try inserting or pasting less data.
This problem occurs when all the following conditions are true:
The application is written in Microsoft Visual C++ and uses the CDao classes to access a Microsoft Jet database data source.
The Use Multi-Byte Character Set value is set for the Character Set project option.Or, no value is set for this option.
Note This issue does not occur if the UNICODE value is set for the Character Set project option.
The data that the application is inserting or updating was retrieved from a fixed-length defined Text column.
The source Text column contains data that is the maximum length that the column allows. For example, a Text(10) column contains a value of 1234567890.
Successive insertions or updates occur from the original variable that is returned from the CDaoRecordset object.
The target table column is one of the following columns:
The same column from which the original data was retrieved
Another fixed-length column that is defined as a Text column of the same size
To resolve this problem, apply the hotfix that is described in Microsoft Knowledge Base article 943509.
For more information, click the following article number to view the article in the Microsoft Knowledge Base:
943509 Description of the Jet 4.0 Database Engine hotfix package for Windows XP Service Pack 2, Windows Server 2003 Service Pack 1, Windows Server 2003 Service Pack 2, Windows Vista, Windows Vista Service Pack 1, and Windows Server 2008: October 23, 2007