Knowledge Base

FIX: The query plan may take longer than expected to compile, and you may receive error message 701, error message 8623, or error message 8651 in SQL Server 2000

Article ID: 896980

Article Last Modified on 11/2/2007

APPLIES TO

Microsoft SQL Server 2000 Enterprise Edition 64-bit
Microsoft SQL Server 2000 Desktop Engine (Windows)
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
Microsoft SQL Server 2000 Developer Edition

Bug #: 474019 (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

When you run a query that contains many MIN aggregates or MAX aggregates in Microsoft SQL Server 2000, the query plan may take longer than expected to compile. You may also receive one or more error messages that are similar to the following:

Error message 1

Server: Msg 701, Level 19, State 1, Line 1 There is insufficient system memory to run this query.

Error message 2

Server: Msg 8623, Level 16, State 1, Line 1 Internal Query Processor Error: The query processor could not produce a query plan. Contact your primary support provider for more information.

Error message 3

Server: Msg 8651, Level 17, State 1, Line 1 Could not perform the requested operation because the minimum query memory is not available. Decrease the configured value for the 'min memory per query' server configuration option.

Typically, this problem occurs when you run a query that contains more than 100 aggregates.

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 occurs when the query optimizer search algorithm consumes more computer resources than expected to compile a valid query plan. When the query optimizer generates various query plan alternatives, one alternative that may be generated is an index seek that contains a TOP 1 clause. The results are ordered forward for the MIN aggregate and ordered backward for the MAX aggregate. This ordering of the results may cause the query optimizer search algorithm to take longer than expected to compile the query plan when there are many aggregates.

RESOLUTION

Hotfix information

A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Only apply it 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 SQL Server 2000 service pack that contains this hotfix.

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

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
Microsoft SQL Server 2000 hotfix build 2000.80.1007

For more information, click the following article numbers to view the articles in the Microsoft Knowledge Base:

842960 Description of the 32-bit SQL Server 7.0 and SQL Server 2000 hotfix installer

872912 Description of the 64-bit SQL Server 2000 hotfix installer

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.

SQL Server 2000 32-bit versions

   Date         Time   Version         Size       File name
   ------------------------------------------------------------------
   13-Apr-2005  06:57  2000.80.1019.0    664,128  Autoplt.dll      
   13-Apr-2005  06:57  2000.80.1019.0     78,400  Console.exe      
   13-Apr-2005  06:57  2000.80.1019.0    332,352  Ctasksui.dll     
   13-Apr-2005  06:57  2000.80.1019.0    315,968  Custtask.dll     
   13-Apr-2005  06:57  2000.80.1019.0     33,340  Dbmslpcn.dll     
   31-Dec-2004  19:31                    786,432  Distmdl.ldf
   31-Dec-2004  19:31                  2,359,296  Distmdl.mdf
   31-Dec-2004  19:31                        180  Drop_repl_hotfix.sql
   13-Apr-2005  06:57  2000.80.1019.0  1,905,216  Dtspkg.dll       
   13-Apr-2005  06:57  2000.80.1019.0    528,960  Dtspump.dll      
   13-Apr-2005  06:57  2000.80.1019.0  1,557,052  Dtsui.dll        
   13-Apr-2005  06:57  2000.80.1019.0    639,552  Dtswiz.dll       
   13-Apr-2005  06:57  2000.80.1019.0    102,992  Impprov.dll      
   31-Dec-2004  19:31                    747,927  Instdist.sql
   31-Dec-2004  19:31                      1,581  Inst_repl_hotfix.sql
   13-Apr-2005  06:57  2000.80.1019.0    352,828  Isqlw.exe        
   13-Apr-2005  06:57  2000.80.1019.0     82,492  Itwiz.exe        
   13-Apr-2005  06:57  2000.80.1019.0     90,692  Msgprox.dll      
   31-Dec-2004  19:16  8.11.41022.0      226,304  Mssdi98.dll      
   13-Apr-2005  06:57  2000.80.1019.0     62,024  Odsole70.dll     
   13-Apr-2005  06:57  2000.80.1019.0     25,144  Opends60.dll     
   13-Apr-2005  07:00                     82,944  Opends60.pdb
   13-Apr-2005  06:57  2000.80.1019.0     57,904  Osql.exe         
   13-Apr-2005  06:57  2000.80.1019.0    279,104  Pfutil80.dll     
   01-Feb-2005  01:46                    551,012  Procsyst.sql
   31-Dec-2004  19:31                     12,305  Qfe469315.sql
   31-Dec-2004  19:31                     19,195  Qfe469571.sql
   31-Dec-2004  19:31                      5,157  Qfe472197.sql
   13-Apr-2005  06:57  2000.80.1019.0    143,940  Qrdrsvc.exe      
   13-Apr-2005  01:04                  1,136,160  Replmerg.sql
   13-Apr-2005  06:57  2000.80.1019.0    221,768  Replprov.dll     
   13-Apr-2005  06:57  2000.80.1019.0    307,784  Replrec.dll      
   13-Apr-2005  01:40  2000.80.1019.0    159,813  Replres.rll
   31-Dec-2004  19:31                  1,088,240  Replsys.sql
   14-Jan-2005  01:05                    986,746  Repltran.sql
   31-Dec-2004  18:49                         55  Repl_uninstall.sql
   13-Apr-2005  06:57  2000.80.1019.0    287,304  Rinitcom.dll     
   13-Apr-2005  06:57  2000.80.1019.0     78,416  Sdiclnt.dll      
   13-Apr-2005  06:57  2000.80.1019.0     66,112  Semmap.dll       
   13-Apr-2005  06:57  2000.80.1019.0     57,916  Semnt.dll        
   13-Apr-2005  06:57  2000.80.1019.0    492,096  Semobj.dll       
   13-Apr-2005  02:44  2000.80.1019.0    172,032  Semobj.rll
   13-Apr-2005  06:57  2000.80.1019.0     53,832  Snapshot.exe     
   01-Feb-2005  01:46                    125,540  Sp3_serv_uni.sql
   13-Apr-2005  06:56  2000.80.1019.0     28,672  Sqlagent.dll     
   13-Apr-2005  06:57  2000.80.1019.0    311,872  Sqlagent.exe     
   13-Apr-2005  06:56  2000.80.1019.0    168,001  Sqlakw32.dll     
   13-Apr-2005  06:57  2000.80.1019.0     33,344  Sqlctr80.dll     
   13-Apr-2005  06:57  2000.80.1019.0  4,215,360  Sqldmo.dll       
   13-Apr-2005  06:57                     25,172  Sqldumper.exe    
   13-Apr-2005  01:03  2000.80.1019.0     28,672  Sqlevn70.rll
   13-Apr-2005  06:57  2000.80.1019.0    156,224  Sqlmaint.exe     
   13-Apr-2005  06:57  2000.80.1019.0    180,792  Sqlmap70.dll     
   13-Apr-2005  06:57  2000.80.1019.0    188,992  Sqlmmc.dll       
   13-Apr-2005  02:50  2000.80.1019.0    479,232  Sqlmmc.rll
   13-Apr-2005  06:57  2000.80.1019.0    401,984  Sqlqry.dll       
   13-Apr-2005  06:57  2000.80.1019.0     57,920  Sqlrepss.dll     
   13-Apr-2005  06:57  2000.80.1019.0  7,721,041  Sqlservr.exe     
   13-Apr-2005  07:00                 13,345,792  Sqlservr.pdb
   13-Apr-2005  06:57  2000.80.1019.0    590,396  Sqlsort.dll      
   13-Apr-2005  06:57  2000.80.1019.0     45,644  Sqlvdi.dll       
   13-Apr-2005  06:57  2000.80.1019.0    106,588  Sqsrvres.dll     
   13-Apr-2005  06:57  2000.80.1019.0     33,340  Ssmsgnet.dll     
   13-Apr-2005  06:57  2000.80.1019.0     33,340  Ssmslpcn.dll     
   13-Apr-2005  06:57  2000.80.1019.0     33,340  Ssmsqlgc.dll     
   13-Apr-2005  06:57  2000.80.1019.0     82,492  Ssnetlib.dll     
   13-Apr-2005  06:57  2000.80.1019.0     25,148  Ssnmpn70.dll     
   13-Apr-2005  06:57  2000.80.1019.0    123,456  Stardds.dll      
   13-Apr-2005  06:57  2000.80.1019.0    158,240  Svrnetcn.dll     
   13-Apr-2005  06:57  2000.80.1019.0     76,416  Svrnetcn.exe     
   13-Apr-2005  06:57  2000.80.1019.0     49,228  Ums.dll          
   13-Apr-2005  07:00                    132,096  Ums.pdb
   13-Apr-2005  06:57  2000.80.1019.0     74,304  Xplog70.dll      
   13-Apr-2005  06:57  2000.80.1019.0     98,872  Xpweb70.dll

SQL Server 2000 64-bit version

   Date         Time   Version         Size       File name
   -------------------------------------------------------------------
   31-Dec-2004  19:31                        180  Drop_repl_hotfix.sql
   31-Dec-2004  19:31                      1,581  Inst_repl_hotfix.sql
   31-Dec-2004  19:31                     12,305  Qfe469315.sql
   31-Dec-2004  19:31                     19,195  Qfe469571.sql
   31-Dec-2004  19:31                      5,157  Qfe472197.sql
   13-Apr-2005  07:59                  1,136,160  Replmerg.sql
   31-Dec-2004  19:31                  1,088,240  Replsys.sql
   14-Jan-2005  01:05                    986,746  Repltran.sql
   31-Dec-2004  18:49                         55  Repl_uninstall.sql
   01-Feb-2005  01:46                    125,540  Sp3_serv_uni.sql
   13-Apr-2005  20:43  2000.80.1019.0     56,832  Dbmslpcn.dll
   13-Apr-2005  20:43                    786,432  Distmdl.ldf
   13-Apr-2005  20:43                  2,359,296  Distmdl.mdf
   13-Apr-2005  20:43  2000.80.1019.0    244,736  Impprov.dll
   13-Apr-2005  20:43                    747,927  Instdist.sql
   13-Apr-2005  20:43  2000.80.1019.0    185,856  Msgprox.dll
   13-Apr-2005  20:43  8.11.41022.0      742,912  Mssdi98.dll
   13-Apr-2005  20:43  2000.80.1019.0    150,528  Odsole70.dll
   13-Apr-2005  20:43  2000.80.1019.0     27,136  Opends60.dll
   13-Apr-2005  20:43                     44,032  Opends60.pdb
   13-Apr-2005  20:43  2000.80.1019.0    148,992  Osql.exe
   13-Apr-2005  20:43                    551,012  Procsyst.sql
   13-Apr-2005  20:43                    551,012  Procsyst.sql
   13-Apr-2005  20:43  2000.80.1019.0    353,280  Qrdrsvc.exe
   13-Apr-2005  20:43                  1,136,160  Replmerg.sql
   13-Apr-2005  20:43                  1,136,160  Replmerg.sql
   13-Apr-2005  20:43  2000.80.1019.0    534,528  Replprov.dll
   13-Apr-2005  20:43  2000.80.1019.0    534,528  Replprov2.dll
   13-Apr-2005  20:43  2000.80.1019.0    769,024  Replrec.dll
   13-Apr-2005  20:43  2000.80.1019.0    769,024  Replrec2.dll
   13-Apr-2005  20:43  2000.80.1019.0    146,432  Replres.rll
   13-Apr-2005  20:43  2000.80.1019.0    146,432  Replres2.rll
   13-Apr-2005  20:43                  1,088,240  Replsys.sql
   13-Apr-2005  20:43                  1,088,240  Replsys.sql
   13-Apr-2005  20:43                    986,746  Repltran.sql
   13-Apr-2005  20:43                    986,746  Repltran.sql
   13-Apr-2005  20:43  2000.80.1019.0    650,240  Rinitcom.dll
   13-Apr-2005  20:43  2000.80.1019.0    160,768  Semmap.dll
   13-Apr-2005  20:43  2000.80.1019.0     66,112  Semmap.dll
   13-Apr-2005  20:43  2000.80.1019.0    160,768  Semmap.dll
   13-Apr-2005  20:43  2000.80.1019.0    132,608  Semnt.dll
   13-Apr-2005  20:43  2000.80.1019.0    132,608  Semnt.dll
   13-Apr-2005  20:43  2000.80.1019.0     88,576  Snapshot.exe
   13-Apr-2005  20:43  2000.80.1019.0     10,240  Sqlagent.dll
   13-Apr-2005  20:43  2000.80.1019.0  1,055,232  Sqlagent.exe
   13-Apr-2005  20:43  2000.80.1019.0     90,112  Sqlboot.dll
   13-Apr-2005  20:43  2000.80.1019.0     90,112  Sqlboot.dll
   13-Apr-2005  20:43  2000.80.1019.0     32,256  Sqlctr80.dll
   13-Apr-2005  20:43  2000.80.1019.0  4,215,360  Sqldmo.dll
   13-Apr-2005  20:43  2000.80.1019.0 13,845,504  Sqldmo.dll
   13-Apr-2005  20:43                     39,936  Sqldumper.exe
   13-Apr-2005  20:43                     39,936  Sqldumper.exe
   13-Apr-2005  20:43  2000.80.1019.0     19,968  Sqlevn70.rll
   13-Apr-2005  20:43  2000.80.1019.0    493,568  Sqlmaint.exe
   13-Apr-2005  20:43  2000.80.1019.0     23,040  Sqlmap70.dll
   13-Apr-2005  20:43  2000.80.1019.0    152,064  Sqlrepss.dll
   13-Apr-2005  20:43  2000.80.1019.0 25,272,320  Sqlservr.exe
   13-Apr-2005  20:43                 21,326,848  Sqlservr.pdb
   13-Apr-2005  20:43  2000.80.1019.0    616,960  Sqlsort.dll
   13-Apr-2005  20:43  2000.80.1019.0    616,960  Sqlsort.dll
   13-Apr-2005  20:43  2000.80.1019.0    616,960  Sqlsort.dll
   13-Apr-2005  20:43  2000.80.1019.0    120,320  Sqlvdi.dll
   13-Apr-2005  20:43  2000.80.1019.0     45,644  Sqlvdi.dll
   13-Apr-2005  20:43  2000.80.1019.0    227,328  Sqsrvres.dll
   13-Apr-2005  20:43  2000.80.1019.0     53,760  Ssmslpcn.dll
   13-Apr-2005  20:43  2000.80.1019.0     59,904  Ssmsqlgc.dll
   13-Apr-2005  20:43  2000.80.1019.0    256,000  Ssnetlib.dll
   13-Apr-2005  20:43  2000.80.1019.0     20,992  Ssnmpn70.dll
   13-Apr-2005  20:43  2000.80.1019.0    430,080  Svrnetcn.dll
   13-Apr-2005  20:43  2000.80.1019.0    185,856  Svrnetcn.exe
   13-Apr-2005  20:43  2000.80.1019.0    183,296  Xplog70.dll
   13-Apr-2005  20:43  2000.80.1019.0    187,392  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.

MORE INFORMATION

This hotfix is only enabled under trace flag 9065. When trace flag 9065 is enabled, the query optimizer no longer generates alternatives such as an index seek that contains a TOP 1 clause if the query contains more than the specified number of MIN aggregates or MAX aggregates. The specified number of MIN aggregates or MAX aggregates is currently set at 16.

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 is used 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

Keywords: kbbug kbfix kbqfe kbpubtypekc kbhotfixserver KB896980

Microsoft KB Archive/896980

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