FIX: Query performance may be slow and may be inconsistent when you run a query while another query that contains an IN operator with many values is compiled

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Article ID: 829205 - View products that this article applies to.
BUG #: 470397 (SQL Server 8.0)

Microsoft distributes 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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SYMPTOMS

When you run a query on a SQL Server database, you may notice that the query performance is slow and is inconsistent. You may notice this behavior when all the following conditions are true:
  • The query performs multiple reads on the memory pages.
  • Another query that contains an IN operator with many values is compiled at the same time.

RESOLUTION

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

Hotfix information

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
   ------------------------------------------------------------------------
   31-May-2003  06:15  2000.80.818.0      78,400  Console.exe      
   24-Jun-2003  12:31  2000.80.818.0      33,340  Dbmslpcn.dll     
   24-Apr-2003  13:42                    786,432  Distmdl.ldf
   24-Apr-2003  13:42                  2,359,296  Distmdl.mdf
   29-Jan-2003  13:25                        180  Drop_repl_hotfix.sql
   11-Sep-2003  14:56  2000.80.859.0   1,905,216  Dtspkg.dll       
   26-Aug-2003  07:46  2000.80.854.0     528,960  Dtspump.dll      
   23-Jun-2003  10:10  2000.80.837.0   1,557,052  Dtsui.dll        
   23-Jun-2003  10:10  2000.80.837.0     639,552  Dtswiz.dll       
   23-Apr-2003  14:21                    747,927  Instdist.sql
   02-May-2003  13:26                      1,581  Inst_repl_hotfix.sql
   07-Feb-2003  18:10  2000.80.765.0      90,692  Msgprox.dll      
   31-Mar-2003  13:37                      1,873  Odsole.sql
   04-Apr-2003  13:16  2000.80.800.0      62,024  Odsole70.dll     
   07-May-2003  08:11  2000.80.819.0      25,144  Opends60.dll     
   02-Apr-2003  09:18  2000.80.796.0      57,904  Osql.exe         
   02-Apr-2003  10:45  2000.80.797.0     279,104  Pfutil80.dll     
   04-Aug-2003  05:47                    550,780  Procsyst.sql
   11-Sep-2003  12:07                     12,305  Qfe469315.sql
   22-May-2003  10:27                     19,195  Qfe469571.sql
   05-Sep-2003  13:06                  1,090,932  Replmerg.sql
   05-Sep-2003  18:48  2000.80.858.0     221,768  Replprov.dll     
   05-Sep-2003  18:48  2000.80.858.0     307,784  Replrec.dll      
   05-Sep-2003  11:30                  1,087,150  Replsys.sql
   13-Aug-2003  03:58                    986,603  Repltran.sql
   29-Jul-2003  07:43  2000.80.819.0     492,096  Semobj.dll       
   31-May-2003  05:57  2000.80.818.0     172,032  Semobj.rll
   05-Aug-2003  08:36                    127,884  Sp3_serv_uni.sql
   31-May-2003  12:31  2000.80.818.0   4,215,360  Sqldmo.dll       
   07-Apr-2003  05:14                     25,172  Sqldumper.exe    
   19-Mar-2003  05:50  2000.80.789.0      28,672  Sqlevn70.rll
   01-Jul-2003  11:48  2000.80.834.0     180,736  Sqlmap70.dll     
   02-Sep-2003  14:26  2000.80.857.0     188,992  Sqlmmc.dll       
   02-Sep-2003  10:33  2000.80.857.0     479,232  Sqlmmc.rll
   07-Feb-2003  18:10  2000.80.765.0      57,920  Sqlrepss.dll     
   22-Sep-2003  12:33  2000.80.863.0   7,614,545  Sqlservr.exe     
   25-Jul-2003  09:14  2000.80.845.0     590,396  Sqlsort.dll      
   07-Feb-2003  18:10  2000.80.765.0      45,644  Sqlvdi.dll       
   24-Jun-2003  12:31  2000.80.818.0      33,340  Ssmslpcn.dll     
   31-May-2003  12:31  2000.80.818.0      82,492  Ssnetlib.dll     
   31-May-2003  12:31  2000.80.818.0      25,148  Ssnmpn70.dll     
   31-May-2003  12:31  2000.80.818.0     158,240  Svrnetcn.dll     
   31-May-2003  06:29  2000.80.818.0      76,416  Svrnetcn.exe     
   30-Apr-2003  11:22  2000.80.816.0      45,132  Ums.dll          
   01-Jul-2003  11:49  2000.80.834.0      98,816  Xpweb70.dll    

Note Because of file dependencies, the most recent hotfix or feature that contains these files may also contain additional files.

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 Microsoft SQL Server 2000 Service Pack 4.

REFERENCES

For more information about software updates, 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
For more information about a related problem, click the following article numbers to view the articles in the Microsoft Knowledge Base:
816069 FIX: A query with a large IN clause can cause concurrency issues
296612 FIX: A large array of IN clause parameters parses or compiles slower on SQL Server 2000

Properties

Article ID: 829205 - Last Review: November 2, 2007 - Revision: 3.3
APPLIES TO
  • 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, Workgroup Edition
  • Microsoft SQL Server 2000 Desktop Engine (Windows)
  • Microsoft SQL Server 2000 Enterprise Edition 64-bit
Keywords: 
kbhotfixserver kbqfe kbqfe kbperformance kbdatabase kbquery kbmemory kbsqlserv2000presp4fix kbfix kbbug KB829205

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