Microsoft KB Archive/331499

= FIX: .NET Managed Provider for Oracle Always Returns Empty DataSet for Queries with Warning Messages =

Article ID: 331499

Article Last Modified on 10/12/2005

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APPLIES TO


 * Microsoft .NET Framework Data Provider for Oracle

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This article was previously published under Q331499



SYMPTOMS
When you execute a query using Microsoft .NET Framework Managed Provider for Oracle, and if the Oracle database server returns a warning message, you will always receive an empty DataSet, even when the query returns a DataSet that is not empty.



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 version of .NET Framework that contains this fix.

To resolve this problem immediately, contact Microsoft Product Support Services to obtain the fix. For a complete list of Microsoft Product Support Services phone 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 fix has the file attributes (or later) 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 -  08-Nov-2002  20:07  1.0.1088.0       290,816  System.data.oracleclient.dll



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.



MORE INFORMATION
A typical scenario that has been tested is a query with an aggregation function that generates the following warning message:

ORA-24347: Warning of a NULL column in an aggregate function

To track the warning message that is returned by the Oracle database server when you execute a query, you have to handle the OracleConnection.InfoMessage event.

MDAC_BUGS:91555

Keywords: kbbug kbfix kbqfe kbhotfixserver KB331499

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