Microsoft KB Archive/934058

= FIX: Incorrect data is written to the XML file when you use the OracleDataReader.GetBytes method to read a raw column in the .NET Framework 2.0 =

Article ID: 934058

Article Last Modified on 12/3/2007

-

APPLIES TO


 * Microsoft .NET Framework 2.0

-



Bug: #50000940 (SQL Hotfix)



SYMPTOMS
Consider the following scenario. You develop a Microsoft .NET Framework 2.0-based application by using Microsoft Visual Studio 2005. In the application, you use the .NET Oracle data provider to connect to an Oracle 9i database or an Oracle 10g database. In the database, there is a table that stores an XML file in a long raw column. The size of the XML file is bigger than 8 KB. You use the OracleDataReader.GetBytes method to read the long raw column into an XML file. In this scenario, incorrect data is written to the file. Therefore, some parts of the XML file cannot be parsed.



CAUSE
The XML file is stored in chunks. A chunk is a page that has a size of 8 KB. When the method reads the data, the OracleDataReader object will read the long raw data in chunks. If the size of the data is bigger than 8 KB, the object has to read more than one chunk. Because each chunk has 8 bytes of header information at the beginning, the object incorrectly returns the header information as raw data.



Hotfix information
A supported hotfix is now available from Microsoft. However, it is intended to correct only the problem that is described in this article. Apply it only 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 Microsoft .NET Framework 2.0 service pack that contains this hotfix.

To resolve this problem immediately, contact Microsoft Customer Support Services to obtain the hotfix. For a complete list of Microsoft Customer 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.

Prerequisites
You must have the .NET Framework 2.0 installed to apply this hotfix.

Restart information
You have to restart the computer after you apply this hotfix.

Registry information
You do not have to change the registry.

Hotfix file information
This hotfix contains only those files that are required to correct the issues that this article lists. This hotfix may not contain of all the files that you must have to fully update a product to the latest build.

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 item in Control Panel.



WORKAROUND
To work around this problem, use the OracleDataReader.GetOracleBinary method instead of the OracleDataReader.GetBytes method to read the long raw column.



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



MORE INFORMATION
For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:

824684 Description of the standard terminology that is used to describe Microsoft software updates

Keywords: kbfix kbqfe kbpubtypekc kbexpertiseadvanced kbhotfixserver kbsql2005connect KB934058

-

[mailto:TECHNET@MICROSOFT.COM Send feedback to Microsoft]

© Microsoft Corporation. All rights reserved.