FIX: You receive an access violation error message when you try to perform a read of a large binary large object column in SQL Server 2000

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Article ID: 917972 - View products that this article applies to.
Bug #: 50000123 (SQL Hotfix)
Bug #: 50000157 (SQL Hotfix)
Bug #: 473454 (SQL Server 8.0)
Microsoft distributes Microsoft SQL Server 2000 fixes as one downloadable file. Because the fixes are cumulative, each new release contains all the hotfixes and all the security fixes that were included with the previous SQL Server 2000 fix release.
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SUMMARY

This article describes the following about this hotfix release:
  • The issues that are fixed by the hotfix package
  • The prerequisites for installing the hotfix package
  • Whether you must restart the computer after you install the hotfix package
  • Whether you must make any registry changes
  • The files that are contained in the hotfix package

SYMPTOMS

When you try to perform a read of a large binary large object (BLOB) column in Microsoft SQL Server 2000, you may experience one of the following problems:
  • You receive an access violation error message.
  • The client application connection that performs the read unexpectedly ends.
Note The text data type, the ntext data type, and the image data type are examples of large binary large objects.

This problem may occur if the following conditions are true:
  • You have one connection that performs the read of the large binary large object column.
  • The read of the large binary large object column uses the READ_UNCOMMITTED isolation level or uses the NOLOCK query hint.

    Note A read that uses the READ_UNCOMMITTED isolation level is called a dirty read.
  • You have a second connection that changes the contents of the large binary large object column.
  • The changes to the contents of the large binary large object column reduce the size of the large binary large object column.
For a list of all publicly released SQL Server 2000 post-Service Pack 4 hotfixes, click the following article number to view the article in the Microsoft Knowledge Base:
894905 Cumulative list of the hotfixes that are available for SQL Server 2000 Service Pack 4

RESOLUTION

The installer does not install this hotfix correctly on x64-based systems. This installation issue occurs when the following conditions are true:
  • The system uses the Advanced Micro Devices (AMD) AMD64 processor architecture or the Intel Extended Memory 64 Technology (EM64T) processor architecture.

    Note This issue does not occur on systems that use the Intel Itanium processor architecture.
  • The system is running a 64-bit version of the Microsoft Windows Server operating system.
  • The system is running a 32-bit version of SQL Server 2000.
We have corrected this installation issue in later builds of SQL Server 2000, starting with version 8.00.2244. When a customer who is running SQL Server 2000 on an x64-based system requests this hotfix, we will provide a build that includes this hotfix and that can be installed correctly on an x64-based system. The build that we provide will be version 8.00.2244 or a later version.

Hotfix information

A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, submit a request to Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site:
http://support.microsoft.com/contactus/?ws=support
Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.

Prerequisites

  • Microsoft SQL Server 2000 Service Pack 4 (SP4)

    For information about how to obtain SQL Server 2000 SP4, click the following article number to view the article in the Microsoft Knowledge Base:
    290211 How to obtain the latest SQL Server 2000 service pack

Restart information

You do not 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 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.
SQL Server 2000, 32-bit hotfix
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Dtsui.dll2000.80.2194.01,593,34421-Apr-200615:05x86
Impprov.dll2000.80.2194.0102,40021-Apr-200615:05x86
Msgprox.dll2000.80.2194.094,20821-Apr-200615:05x86
Msrpjt40.dll4.10.9424.0188,47324-Jan-200608:13x86
Mssdi98.dll8.11.50523.0239,10406-Jun-200522:46x86
Ntwdblib.dll2000.80.2194.0290,81621-Apr-200615:05x86
Odsole70.dll2000.80.2194.069,63221-Apr-200615:05x86
Osql.exe2000.80.2194.057,34420-Apr-200620:17x86
Pfclnt80.dll2000.80.2194.0430,08021-Apr-200615:05x86
Replmerg.exe2000.80.2194.0163,84020-Apr-200620:32x86
Replprov.dll2000.80.2194.0237,56821-Apr-200615:05x86
Replrec.dll2000.80.2194.0315,39221-Apr-200615:05x86
Replsub.dll2000.80.2194.0270,33621-Apr-200615:05x86
Semexec.dll2000.80.2194.0856,06421-Apr-200615:05x86
Sqlagent.exe2000.80.2194.0323,58420-Apr-200619:51x86
Sqldiag.exe2000.80.2194.0118,78420-Apr-200621:32x86
Sqldmo.dll2000.80.2194.04,362,24021-Apr-200615:05x86
Sqlevn70.rll2000.80.2194.045,05621-Apr-200615:05Not Applicable
Sqlfth75.dll2000.80.2194.0102,40020-Apr-200620:14x86
Sqlservr.exe2000.80.2194.09,162,75220-Apr-200623:26x86
Sqlsort.dll2000.80.2194.0589,82421-Apr-200615:05x86
Stardds.dll2000.80.2194.0176,12821-Apr-200615:05x86
Svrnetcn.dll2000.80.2194.0110,59221-Apr-200615:05x86
Ums.dll2000.80.2194.035,32821-Apr-200615:05x86
Xpstar.dll2000.80.2194.0311,29621-Apr-200615:05x86

WORKAROUND

To work around this problem, use one of the following methods:
  • Use the READ_COMMITTED isolation level to perform the read of the large binary large object column.
  • Do not use the NOLOCK query hint to perform the read of the large binary large object column.

STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

MORE INFORMATION

For more information, 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

Properties

Article ID: 917972 - Last Review: October 9, 2011 - Revision: 2.0
APPLIES TO
  • Microsoft SQL Server 2000 Personal Edition
  • Microsoft SQL Server 2000 Developer Edition
  • Microsoft SQL Server 2000 Enterprise Edition
  • Microsoft SQL Server 2000 Standard Edition
Keywords: 
kbautohotfix kbbug kbfix kbtshoot kbhotfixserver kbqfe KB917972

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