Microsoft KB Archive/823689

= FIX: &quot;Value can not be converted to requested type&quot; error when you try to read a Real data type column from a JDBC ResultSet object =

Article ID: 823689

Article Last Modified on 10/25/2005

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APPLIES TO


 * Microsoft SQL Server 2000 Driver for JDBC

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SYMPTOMS
You have a Java application that uses the Java Database Connectivity (JDBC) API to retrieve a ResultSet object by using the Microsoft SQL Server 2000 Driver for JDBC. When you try to read a Real data type column in the ResultSet object, you may receive the following error message:

[Microsoft][SQLServer 2000 Driver for JDBC]Value can not be converted to requested type.

Note In this message, the word &quot;can not&quot; is a misspelling for the word &quot;cannot&quot;.

The problem occurs only when the Real data type column is defined with the NOT NULL constraint.



RESOLUTION
A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Only apply it to systems that are experiencing this specific problem. This hotfix may receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next Service Pack that contains this hotfix.

To resolve this problem immediately, contact Microsoft Product Support Services to obtain the hotfix. For a complete list of Microsoft Product Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question. The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.   Date         Time   Version   Size     File name --  13-Jun-2003  09:22  2.2.0036  286,818  Msbase.jar 13-Jun-2003 09:22  2.2.0036   67,159  Mssqlserver.jar 13-Jun-2003 09:22  2.2.0036   58,903  Msutil.jar



WORKAROUND
To work around this problem, configure the Real data type column to accept null values.

Note Make sure that removing the NOT NULL constraint for the Real data type column does not affect the requirement of your program or application.



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section of this article.

