Microsoft KB Archive/891201

= FIX: Performance is significantly reduced when you set trace flag 9134 to prevent error message 601 in SQL Server 2000 =

Article ID: 891201

Article Last Modified on 11/2/2007

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APPLIES TO


 * Microsoft SQL Server 2000 64-bit Edition
 * Microsoft SQL Server 2000 Developer Edition
 * Microsoft SQL Server 2000 Standard Edition
 * Microsoft SQL Server 2000 Enterprise Edition
 * Microsoft SQL Server 2000 Personal Edition
 * Microsoft SQL Server 2000 Enterprise Edition
 * Microsoft SQL Server 2000 Workgroup Edition
 * Microsoft SQL Server 2000 Desktop Engine (Windows)
 * Microsoft SQL Server 2000 Developer Edition
 * Microsoft SQL Server 2000 Enterprise Edition 64-bit

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Bug #: 473403 (SQL Server 8.0)



Article contents

 * Summary
 * Symptoms
 * Cause
 * Resolution
 * Service pack information
 * Hotfix information
 * Prerequisites
 * Restart information
 * Hotfix file information
 * Status
 * More Information



SUMMARY
This article describes the following information about this hotfix release:
 * The issues that are fixed by this hotfix package
 * The prerequisites for installing the hotfix package
 * Whether you must restart your 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

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SYMPTOMS
When you use trace flag 9134 to prevent error message 601 in Microsoft SQL Server 2000, SQL Server performance is significantly reduced. For example, certain queries may be up to two times as slow.

Note Error 601 is logged to the SQL Server 2000 error log and occurs if the page at the current position of the scan is deleted when you scan with the NOLOCK locking hint or with the transaction isolation level set to READ Uncommitted.

For a list of previous hotfixes, see the &quot;Microsoft SQL Server 2000 post-Service Pack 3 or Microsoft SQL Server 2000 post-Service Pack 3a hotfixes&quot; section in the following Microsoft Knowledge Base article:

290211 How to obtain the latest SQL Server 2000 service pack

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CAUSE
This problem occurs because setting trace flag 9134 to TRUE causes additional reads to test whether the page is allocated and linked correctly. This check traverses Index Allocation Map (IAM) chains and Page Free Space (PFS) pages. This behavior causes the additional reads and slowdown.

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Service pack information
To resolve this problem, obtain the latest service pack for Microsoft 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

Prerequisites
This hotfix requires SQL Server 2000 Service Pack 3 (SP3). For more information about how to obtain SQL Server 2000 Service Pack 3, 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

Additionally, this hotfix requires that you also have SQL Server 2000 hotfix build 2000.80.977 installed. For more information about SQL Server 2000 Post SP3a hotfix build 2000.80.977, click the following article number to view the article in the Microsoft Knowledge Base:

888007 You receive a &quot;The product does not have a prerequisite update installed&quot; error message when you try to install a SQL Server 2000 post-Service Pack 3 hotfix

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Restart information
You do not have to restart your computer after you apply this hotfix.

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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.

SQL Server 2000, 32-bit versions
 Date         Time   Version        Size       File name -- 11-Dec-2004  02:21  2000.80.996.0    664,128  Autoplt.dll 11-Dec-2004 02:20  2000.80.996.0     78,400  Console.exe 11-Dec-2004 02:21  2000.80.996.0    332,352  Ctasksui.dll 11-Dec-2004 02:21  2000.80.996.0    315,968  Custtask.dll 11-Dec-2004 02:21  2000.80.996.0     33,340  Dbmslpcn.dll 11-Dec-2004 02:21  2000.80.996.0  1,905,216  Dtspkg.dll 11-Dec-2004 02:21  2000.80.996.0    528,960  Dtspump.dll 11-Dec-2004 02:21  2000.80.996.0     41,536  Dtsrun.exe 11-Dec-2004 02:21  2000.80.996.0  1,557,052  Dtsui.dll 11-Dec-2004 02:21  2000.80.996.0    639,552  Dtswiz.dll 11-Dec-2004 02:21  2000.80.996.0    352,828  Isqlw.exe 11-Dec-2004 02:21  2000.80.996.0     82,492  Itwiz.exe 11-Dec-2004 02:21  2000.80.996.0     90,692  Msgprox.dll 29-Oct-2004 08:16  8.11.41022.0     226,304  Mssdi98.dll 11-Dec-2004 02:21  2000.80.996.0     62,024  Odsole70.dll 11-Dec-2004 02:22  2000.80.996.0     25,144  Opends60.dll 11-Dec-2004 00:23                    17,576  Opends60.lib 11-Dec-2004 02:21  2000.80.996.0     57,904  Osql.exe 11-Dec-2004 02:21  2000.80.996.0    279,104  Pfutil80.dll 11-Dec-2004 02:21  2000.80.996.0    143,940  Qrdrsvc.exe 11-Dec-2004 02:21  2000.80.996.0    221,768  Replprov.dll 11-Dec-2004 02:21  2000.80.996.0    307,784  Replrec.dll 11-Dec-2004 02:21  2000.80.996.0    287,304  Rinitcom.dll 11-Dec-2004 02:21  2000.80.996.0     78,416  Sdiclnt.dll 11-Dec-2004 02:21  2000.80.996.0     66,112  Semmap.dll 11-Dec-2004 02:21  2000.80.996.0     57,916  Semnt.dll 11-Dec-2004 02:21  2000.80.996.0    492,096  Semobj.dll 11-Dec-2004 02:21  2000.80.996.0     53,832  Snapshot.exe 11-Dec-2004 02:20  2000.80.996.0     28,672  Sqlagent.dll 11-Dec-2004 02:21  2000.80.996.0    311,872  Sqlagent.exe 11-Dec-2004 02:20  2000.80.996.0    168,001  Sqlakw32.dll 11-Dec-2004 00:07                     4,352  Sqlakw32.lib 11-Dec-2004 02:21  2000.80.996.0     33,344  Sqlctr80.dll 11-Dec-2004 02:21  2000.80.996.0    815,676  Sqldata.dll 11-Dec-2004 02:21  2000.80.996.0  4,215,360  Sqldmo.dll 11-Dec-2004 02:21                    25,172  Sqldumper.exe 11-Dec-2004 02:21  2000.80.996.0    156,224  Sqlmaint.exe 11-Dec-2004 02:21  2000.80.996.0    180,792  Sqlmap70.dll 11-Dec-2004 02:21  2000.80.996.0    188,992  Sqlmmc.dll 11-Dec-2004 02:21  2000.80.996.0    401,984  Sqlqry.dll 11-Dec-2004 02:21  2000.80.996.0     57,920  Sqlrepss.dll 11-Dec-2004 02:21  2000.80.996.0  7,716,945  Sqlservr.exe 11-Dec-2004 02:21  2000.80.996.0    590,396  Sqlsort.dll 11-Dec-2004 02:21  2000.80.996.0     45,644  Sqlvdi.dll 11-Dec-2004 02:21  2000.80.996.0    106,588  Sqsrvres.dll 11-Dec-2004 02:21  2000.80.996.0     33,340  Ssmsgnet.dll 11-Dec-2004 02:21  2000.80.996.0     33,340  Ssmslpcn.dll 11-Dec-2004 02:21  2000.80.996.0     33,340  Ssmsqlgc.dll 11-Dec-2004 02:21  2000.80.996.0     33,340  Ssmssnet.dll 11-Dec-2004 02:21  2000.80.996.0     82,492  Ssnetlib.dll 11-Dec-2004 02:21  2000.80.996.0     25,148  Ssnmpn70.dll 11-Dec-2004 02:21  2000.80.996.0    123,456  Stardds.dll 11-Dec-2004 02:21  2000.80.996.0    158,240  Svrnetcn.dll 11-Dec-2004 02:21  2000.80.996.0     76,416  Svrnetcn.exe 11-Dec-2004 02:21  2000.80.996.0     49,228  Ums.dll 11-Dec-2004 02:21  2000.80.996.0     74,304  Xplog70.dll 11-Dec-2004 02:21  2000.80.996.0     98,872  Xpweb70.dll

SQL Server 2000, 64-bit version
 Date         Time   Version        Size        File name      Platform -- 11-Dec-2004  09:29  2000.80.996.0      56,832  Dbmslpcn.dll   IA-64 11-Dec-2004 09:28  2000.80.996.0     528,960  Dtspump.dll 11-Dec-2004 09:29  2000.80.996.0     185,856  Msgprox.dll    IA-64 29-Oct-2004 08:16  8.11.41022.0      742,912  Mssdi98.dll    IA-64 11-Dec-2004 09:29  2000.80.996.0     151,040  Odsole70.dll 11-Dec-2004 09:30  2000.80.996.0      27,136  Opends60.dll 11-Dec-2004 02:31                     19,880  Opends60.lib 11-Dec-2004 09:29  2000.80.996.0     148,992  Osql.exe       IA-64 11-Dec-2004 09:29  2000.80.996.0     353,280  Qrdrsvc.exe    IA-64 11-Dec-2004 09:30  2000.80.996.0     534,528  Replprov.dll   IA-64 11-Dec-2004 09:30  2000.80.996.0     769,024  Replrec.dll 11-Dec-2004 09:30  2000.80.996.0     650,240  Rinitcom.dll   IA-64 11-Dec-2004 09:30  2000.80.996.0     160,768  Semmap.dll     IA-64 11-Dec-2004 09:30  2000.80.996.0     132,608  Semnt.dll 11-Dec-2004 09:29  2000.80.996.0      88,576  Snapshot.exe 11-Dec-2004 09:28  2000.80.996.0      10,240  Sqlagent.dll   IA-64 11-Dec-2004 09:29  2000.80.996.0   1,055,232  Sqlagent.exe   IA-64 11-Dec-2004 09:30  2000.80.996.0      90,112  Sqlboot.dll 11-Dec-2004 09:30  2000.80.996.0      32,256  Sqlctr80.dll 11-Dec-2004 09:30  2000.80.996.0     812,032  Sqldata.dll    IA-64 11-Dec-2004 09:30  2000.80.996.0  13,845,504  Sqldmo.dll 11-Dec-2004 09:29                     39,936  Sqldumper.exe  IA-64 11-Dec-2004 09:29  2000.80.996.0     493,568  Sqlmaint.exe 11-Dec-2004 09:30  2000.80.996.0      23,040  Sqlmap70.dll   IA-64 11-Dec-2004 09:30  2000.80.996.0     152,064  Sqlrepss.dll   IA-64 11-Dec-2004 09:30  2000.80.996.0  25,253,888  Sqlservr.exe 11-Dec-2004 09:30  2000.80.996.0     616,960  Sqlsort.dll 11-Dec-2004 09:30  2000.80.996.0     120,320  Sqlvdi.dll     IA-64 11-Dec-2004 09:30  2000.80.996.0     227,328  Sqsrvres.dll 11-Dec-2004 09:30  2000.80.996.0      53,760  Ssmslpcn.dll 11-Dec-2004 09:30  2000.80.996.0      59,904  Ssmsqlgc.dll   IA-64 11-Dec-2004 09:30  2000.80.996.0     256,000  Ssnetlib.dll   IA-64 11-Dec-2004 09:30  2000.80.996.0      20,992  Ssnmpn70.dll 11-Dec-2004 09:30  2000.80.996.0     430,080  Svrnetcn.dll 11-Dec-2004 09:29  2000.80.996.0     185,856  Svrnetcn.exe 11-Dec-2004 09:30  2000.80.996.0     183,296  Xplog70.dll 11-Dec-2004 09:30  2000.80.996.0     187,392  Xpweb70.dll    IA-64 Note Because of file dependencies, the most recent hotfix that contains these files may also contain additional files.

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

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MORE INFORMATION
For more information about the naming schema for Microsoft 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 correcting 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

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Keywords: kbbug kbfix kbqfe kbsqlserv2000presp4fix kbhotfixserver KB891201

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