FIX: The UPDATE query blocks the SELECT query when you run an UPDATE query and a SELECT query at the same time in SQL Server 2000 (867746)


The information in this article applies to:

  • Microsoft SQL Server 2000 Desktop Engine (MSDE)
  • Microsoft SQL Server 2000 Developer Edition
  • Microsoft SQL Server 2000 Enterprise Edition
  • Microsoft SQL Server 2000 Personal Edition
  • Microsoft SQL Server 2000 Standard Edition
  • Microsoft SQL Server 2000 Workgroup Edition
BUG #: 471449 (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.

SUMMARY

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

SYMPTOMS

In Microsoft SQL Server 2000, when you run an UPDATE query and a SELECT query at the same time, the UPDATE query blocks the SELECT query. You experience this problem when you run a SELECT statement that uses the TOP clause and the READPAST locking hint.

Note The SELECT statement successfully runs without being blocked when you remove the TOP clause.

For a list of all publicly released SQL Server 2000 Post-Service Pack 3a hotfixes, click the following article number to view the article in the Microsoft Knowledge Base:

810185 SQL Server 2000 hotfix update for SQL Server 2000 Service Pack 3 and 3a

CAUSE

This problem may occur when there is a clustered index on a table. When there is a clustered index on a table, the READPAST locking hint may not read past the obtained locks. The row that is locked is a key within an index.

RESOLUTION

Service pack information

To resolve this problem, obtain the latest service pack for SQL Server 2000. For more information, 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

Hotfix information

Prerequisites

  • Microsoft SQL Server 2000 Service Pack 3 (SP3)

    For information about how to obtain SQL Server 2000 SP3, 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 tool in Control Panel.
   Date         Time   Version        Size        File name
   -------------------------------------------------------------------
   10-Oct-2003  18:48                      1,581  Inst_repl_hotfix.sql
   08-Jun-2004  17:14  2000.80.949.0     352,828  Isqlw.exe        
   08-Jun-2004  17:14  2000.80.949.0      82,492  Itwiz.exe        
   08-Jun-2004  17:14  2000.80.949.0      90,692  Msgprox.dll      
   19-May-2004  23:43  8.11.40209.0      209,408  Mssdi98.dll      
   08-Jun-2004  17:14  2000.80.949.0      62,024  Odsole70.dll     
   08-Jun-2004  17:15  2000.80.949.0      25,144  Opends60.dll     
   08-Jun-2004  17:16                     82,944  Opends60.pdb
   08-Jun-2004  17:14  2000.80.949.0      57,904  Osql.exe         
   08-Jun-2004  17:14  2000.80.949.0     279,104  Pfutil80.dll     
   10-Oct-2003  18:37                    550,780  Procsyst.sql
   08-Apr-2004  21:42                     12,305  Qfe469315.sql
   08-Apr-2004  21:42                     19,195  Qfe469571.sql
   08-Jun-2004  15:52                  1,104,848  Replmerg.sql
   08-Jun-2004  17:14  2000.80.949.0     221,768  Replprov.dll     
   08-Jun-2004  17:14  2000.80.949.0     307,784  Replrec.dll      
   08-Jun-2004  16:12  2000.80.949.0     159,813  Replres.rll
   10-Oct-2003  18:48                  1,087,150  Replsys.sql
   10-Oct-2003  18:48                    986,603  Repltran.sql
   08-Jun-2004  17:14  2000.80.949.0     287,304  Rinitcom.dll     
   08-Jun-2004  17:14  2000.80.949.0      78,416  Sdiclnt.dll      
   08-Jun-2004  17:14  2000.80.949.0      66,112  Semmap.dll       
   08-Jun-2004  17:14  2000.80.949.0      57,916  Semnt.dll        
   08-Jun-2004  17:14  2000.80.949.0     492,096  Semobj.dll       
   08-Jun-2004  16:37  2000.80.949.0     172,032  Semobj.rll
   08-Jun-2004  17:14  2000.80.949.0      53,832  Snapshot.exe     
   12-Mar-2004  03:10                    117,834  Sp3_serv_uni.sql
   08-Jun-2004  17:13  2000.80.949.0      28,672  Sqlagent.dll     
   08-Jun-2004  17:14  2000.80.949.0     311,872  Sqlagent.exe     
   08-Jun-2004  17:13  2000.80.949.0     168,001  Sqlakw32.dll     
   08-Jun-2004  17:15  2000.80.949.0      33,344  Sqlctr80.dll     
   08-Jun-2004  17:15  2000.80.949.0   4,215,360  Sqldmo.dll       
   08-Jun-2004  17:14                     25,172  Sqldumper.exe    
   08-Jun-2004  15:49  2000.80.949.0      28,672  Sqlevn70.rll
   08-Jun-2004  17:15  2000.80.949.0     180,792  Sqlmap70.dll     
   08-Jun-2004  17:15  2000.80.949.0     188,992  Sqlmmc.dll       
   08-Jun-2004  16:41  2000.80.949.0     479,232  Sqlmmc.rll
   08-Jun-2004  17:15  2000.80.949.0     401,984  Sqlqry.dll       
   08-Jun-2004  17:15  2000.80.949.0      57,920  Sqlrepss.dll     
   08-Jun-2004  17:15  2000.80.949.0   7,581,777  Sqlservr.exe     
   08-Jun-2004  17:15                 13,050,880  Sqlservr.pdb
   08-Jun-2004  17:15  2000.80.949.0     590,396  Sqlsort.dll      
   08-Jun-2004  17:15  2000.80.949.0      45,644  Sqlvdi.dll       
   08-Jun-2004  17:15  2000.80.949.0     106,588  Sqsrvres.dll     
   08-Jun-2004  17:15  2000.80.949.0      33,340  Ssmslpcn.dll     
   08-Jun-2004  17:15  2000.80.949.0      82,492  Ssnetlib.dll     
   08-Jun-2004  17:15  2000.80.949.0      25,148  Ssnmpn70.dll     
   08-Jun-2004  17:15  2000.80.949.0     123,456  Stardds.dll      
   08-Jun-2004  17:15  2000.80.949.0     158,240  Svrnetcn.dll     
   08-Jun-2004  17:14  2000.80.949.0      76,416  Svrnetcn.exe     
   08-Jun-2004  17:15  2000.80.949.0      49,228  Ums.dll          
   08-Jun-2004  17:15                    132,096  Ums.pdb
   08-Jun-2004  17:15  2000.80.949.0      98,872  Xpweb70.dll
Note Because of file dependencies, the most recent hotfix or feature that contains these files may also contain additional files.

WORKAROUND

To work around this problem, use one of the following methods:
  • Remove the TOP clause from the SELECT query.
  • Use the HASH JOIN hint in the SELECT query.

    Note You may experience a decrease in performance when you use the HASH JOIN hint.

STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section. This problem was first corrected in SQL Server 2000 Service Pack 4.

MORE INFORMATION

For more information about the naming schema for SQL Server updates, click the following article number to view the article in the Microsoft Knowledge Base:

822499 New naming schema for Microsoft SQL Server software update packages

For more information about the terminology that Microsoft uses when Microsoft corrects software after it is released, 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

Modification Type:MinorLast Reviewed:7/25/2006
Keywords:kbSQLServ2000preSP4fix kbfix kbbug kbHotfixServer kbQFE kbpubtypekc KB867746 kbAudDeveloper kbAudITPRO
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