FIX: A stack overflow exception may occur, and SQL Server 2000 may unexpectedly close when you submit a query that uses the UNION ALL operator more than 255 times

Article ID: 892141 - View products that this article applies to.
Bug #: 473585 (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 this hotfix package
  • The prerequisites for applying the hotfix package
  • Information about whether you must restart the computer after you install the hotfix package
  • Information about whether the hotfix package is replaced by any other hotfix package
  • Information about whether you must make any registry changes
  • The files that are contained in the hotfix package
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SYMPTOMS

Consider the following scenario. You create a query that uses the UNION ALL operator more than 255 times. You submit this query from a client application to Microsoft SQL Server 2000. In this scenario, a stack overflow exception may occur, and then SQL Server unexpectedly closes. When this problem occurs, the client application receives the following error message:
Server: Msg 8621, Severity 17, State 1, Line 1 Internal Query Processor Error: The query processor ran out of stack space during query optimization.
Additionally, the following error is written to the SQL Server error log:
Date Time spid52 Date Time Stack Overflow Dump not possible - Exception c00000fd E at 0x00000000005A8C70
Date Time spid52 Address=5a8c70 Exception Code = c00000fd
Date Time spid52 <the query statement (only part of the statement will be saved here due to length consideration>
Date Time spid52
Date Time spid52 TotalPhysicalMemory = 2139881472, AvailablePhysicalMemory = 1585553408
Date Time spid52 AvailableVirtualMemory = 7677010944000, AvailablePagingFile = 3594182656
On computers that run on the IA-64 architecture, the client application may receive the following error message:
[Microsoft][ODBC SQL Server Driver][DBNETLIB]ConnectionCheckForData (CheckforData()).
Server: Msg 11, Severity 16, State 1, Line 0 General Network Error. Connection broken
Finally, the following error is written to the SQL Server event log:

Event type: Error
Event source: Service Control Manager
Event catalog: None
Event ID: 7034
Date: Date
Time: Date
User: N/A
Computer: ComputerName
Description: The MSSQLSERVER service terminated unexpectedly. It has done this 1 time(s).

For a list of all publicly released SQL Server 2000 Post-Service Pack 3a hotfixes, see the following article in the Microsoft Knowledge Base:
810185
(http://support.microsoft.com/kb/810185/ )
SQL Server 2000 hotfix update for SQL Server 2000 Service Pack 3 and 3a
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RESOLUTION

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
(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

You must have Microsoft SQL Server 2000 Service Pack 3 (SP3) installed to apply this hotfix.

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
(http://support.microsoft.com/kb/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 modify the registry after you apply this hotfix.

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 of 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
   -------------------------------------------------------------------
   14-Jan-2005  18:47  2000.80.1001.0    664,128  Autoplt.dll      
   14-Jan-2005  18:47  2000.80.1001.0     78,400  Console.exe      
   14-Jan-2005  18:47  2000.80.1001.0    332,352  Ctasksui.dll     
   14-Jan-2005  18:47  2000.80.1001.0    315,968  Custtask.dll     
   14-Jan-2005  18:47  2000.80.1001.0     33,340  Dbmslpcn.dll     
   31-Dec-2004  18:31                    786,432  Distmdl.ldf
   31-Dec-2004  18:31                  2,359,296  Distmdl.mdf
   31-Dec-2004  18:31                        180  Drop_repl_hotfix.sql
   14-Jan-2005  18:47  2000.80.1001.0  1,905,216  Dtspkg.dll       
   14-Jan-2005  18:47  2000.80.1001.0    528,960  Dtspump.dll      
   14-Jan-2005  18:47  2000.80.1001.0  1,557,052  Dtsui.dll        
   14-Jan-2005  18:47  2000.80.1001.0    639,552  Dtswiz.dll       
   31-Dec-2004  18:31                    747,927  Instdist.sql
   31-Dec-2004  18:31                      1,581  Inst_repl_hotfix.sql
   14-Jan-2005  18:47  2000.80.1001.0    352,828  Isqlw.exe        
   14-Jan-2005  18:47  2000.80.1001.0     82,492  Itwiz.exe        
   14-Jan-2005  18:47  2000.80.1001.0     90,692  Msgprox.dll      
   31-Dec-2004  18:16  8.11.41022.0      226,304  Mssdi98.dll      
   14-Jan-2005  18:47  2000.80.1001.0     62,024  Odsole70.dll     
   14-Jan-2005  18:48  2000.80.1001.0     25,144  Opends60.dll     
   14-Jan-2005  18:47  2000.80.1001.0     57,904  Osql.exe         
   14-Jan-2005  18:47  2000.80.1001.0    279,104  Pfutil80.dll     
   31-Dec-2004  18:25                    550,780  Procsyst.sql
   31-Dec-2004  18:31                     12,305  Qfe469315.sql
   31-Dec-2004  18:31                     19,195  Qfe469571.sql
   31-Dec-2004  18:31                      5,157  Qfe472197.sql
   14-Jan-2005  18:47  2000.80.1001.0    143,940  Qrdrsvc.exe      
   14-Jan-2005  19:10                  1,136,160  Replmerg.sql
   14-Jan-2005  18:47  2000.80.1001.0    221,768  Replprov.dll     
   14-Jan-2005  18:47  2000.80.1001.0    307,784  Replrec.dll      
   14-Jan-2005  01:22  2000.80.1001.0    159,813  Replres.rll
   31-Dec-2004  18:31                  1,088,240  Replsys.sql
   14-Jan-2005  00:05                    986,746  Repltran.sql
   31-Dec-2004  17:49                         55  Repl_uninstall.sql
   14-Jan-2005  18:47  2000.80.1001.0    287,304  Rinitcom.dll     
   14-Jan-2005  18:47  2000.80.1001.0     78,416  Sdiclnt.dll      
   14-Jan-2005  18:47  2000.80.1001.0     66,112  Semmap.dll       
   14-Jan-2005  18:47  2000.80.1001.0     57,916  Semnt.dll        
   14-Jan-2005  18:47  2000.80.1001.0    492,096  Semobj.dll       
   14-Jan-2005  01:42  2000.80.1001.0    172,032  Semobj.rll
   14-Jan-2005  18:47  2000.80.1001.0     53,832  Snapshot.exe     
   31-Dec-2004  18:25                    117,834  Sp3_serv_uni.sql
   14-Jan-2005  18:46  2000.80.1001.0     28,672  Sqlagent.dll     
   14-Jan-2005  18:47  2000.80.1001.0    311,872  Sqlagent.exe     
   14-Jan-2005  18:46  2000.80.1001.0    168,001  Sqlakw32.dll     
   14-Jan-2005  18:47  2000.80.1001.0     33,344  Sqlctr80.dll     
   14-Jan-2005  18:47  2000.80.1001.0  4,215,360  Sqldmo.dll       
   14-Jan-2005  18:47                     25,172  Sqldumper.exe    
   14-Jan-2005  01:02  2000.80.1001.0     28,672  Sqlevn70.rll
   14-Jan-2005  18:47  2000.80.1001.0    156,224  Sqlmaint.exe     
   14-Jan-2005  18:48  2000.80.1001.0    180,792  Sqlmap70.dll     
   14-Jan-2005  18:48  2000.80.1001.0    188,992  Sqlmmc.dll       
   14-Jan-2005  01:28  2000.80.1001.0    479,232  Sqlmmc.rll
   14-Jan-2005  18:48  2000.80.1001.0    401,984  Sqlqry.dll       
   14-Jan-2005  18:48  2000.80.1001.0     57,920  Sqlrepss.dll     
   14-Jan-2005  18:48  2000.80.1001.0  7,721,041  Sqlservr.exe     
   14-Jan-2005  18:48  2000.80.1001.0    590,396  Sqlsort.dll      
   14-Jan-2005  18:48  2000.80.1001.0     45,644  Sqlvdi.dll       
   14-Jan-2005  18:48  2000.80.1001.0    106,588  Sqsrvres.dll     
   14-Jan-2005  18:48  2000.80.1001.0     33,340  Ssmsgnet.dll     
   14-Jan-2005  18:48  2000.80.1001.0     33,340  Ssmslpcn.dll     
   14-Jan-2005  18:48  2000.80.1001.0     33,340  Ssmsqlgc.dll     
   14-Jan-2005  18:48  2000.80.1001.0     82,492  Ssnetlib.dll     
   14-Jan-2005  18:48  2000.80.1001.0     25,148  Ssnmpn70.dll     
   14-Jan-2005  18:48  2000.80.1001.0    123,456  Stardds.dll      
   14-Jan-2005  18:48  2000.80.1001.0    158,240  Svrnetcn.dll     
   14-Jan-2005  18:47  2000.80.1001.0     76,416  Svrnetcn.exe     
   14-Jan-2005  18:48  2000.80.1001.0     49,228  Ums.dll          
   14-Jan-2005  18:48  2000.80.1001.0     74,304  Xplog70.dll      
   14-Jan-2005  18:48  2000.80.1001.0     98,872  Xpweb70.dll
SQL Server 2000 64-bit version
   Date         Time   Version          Size       File name      Platform
   -----------------------------------------------------------------------
   15-Jan-2005  02:15  2000.80.1001.0      56,832  Dbmslpcn.dll   IA-64
   15-Jan-2005  02:16                     786,432  Distmdl.ldf 
   15-Jan-2005  02:16                   2,359,296  Distmdl.mdf
   15-Jan-2005  02:16                     747,927  Instdist.sql
   15-Jan-2005  02:16  2000.80.1001.0     185,856  Msgprox.dll    IA-64
   15-Jan-2005  02:15  8.11.41022.0       742,912  Mssdi98.dll    IA-64
   15-Jan-2005  02:15  2000.80.1001.0     151,040  Odsole70.dll   IA-64
   15-Jan-2005  02:15  2000.80.1001.0      27,136  Opends60.dll   IA-64
   15-Jan-2005  02:15  2000.80.1001.0     148,992  Osql.exe       IA-64
   15-Jan-2005  02:15                     550,780  Procsyst.sql
   15-Jan-2005  02:16  2000.80.1001.0     353,280  Qrdrsvc.exe    IA-64
   15-Jan-2005  02:15                   1,136,160  Replmerg.sql
   15-Jan-2005  02:15  2000.80.1001.0     534,528  Replprov.dll   IA-64
   15-Jan-2005  02:15  2000.80.1001.0     534,528  Replprov2.dll  IA-64
   15-Jan-2005  02:15  2000.80.1001.0     769,024  Replrec.dll    IA-64
   15-Jan-2005  02:15  2000.80.1001.0     769,024  Replrec2.dll   IA-64
   15-Jan-2005  02:15                   1,088,240  Replsys.sql
   15-Jan-2005  02:15                     986,746  Repltran.sql
   15-Jan-2005  02:15  2000.80.1001.0     650,240  Rinitcom.dll   IA-64
   15-Jan-2005  02:15  2000.80.1001.0     160,768  Semmap.dll     IA-64
   15-Jan-2005  02:15  2000.80.1001.0     132,608  Semnt.dll      IA-64
   15-Jan-2005  02:15  2000.80.1001.0      88,576  Snapshot.exe   IA-64
   15-Jan-2005  02:15  2000.80.1001.0      10,240  Sqlagent.dll   IA-64
   15-Jan-2005  02:15  2000.80.1001.0   1,055,232  Sqlagent.exe   IA-64
   15-Jan-2005  02:15  2000.80.1001.0      90,112  Sqlboot.dll    IA-64
   15-Jan-2005  02:15  2000.80.1001.0      32,256  Sqlctr80.dll   IA-64
   15-Jan-2005  02:15  2000.80.1001.0   4,215,360  Sqldmo.dll     x86
   15-Jan-2005  02:15                      39,936  Sqldumper.exe  IA-64
   15-Jan-2005  02:15  2000.80.1001.0     493,568  Sqlmaint.exe   IA-64
   15-Jan-2005  02:15  2000.80.1001.0      23,040  Sqlmap70.dll   IA-64
   15-Jan-2005  02:15  2000.80.1001.0     152,064  Sqlrepss.dll   IA-64
   15-Jan-2005  02:15  2000.80.1001.0  25,270,272  Sqlservr.exe   IA-64
   15-Jan-2005  02:15  2000.80.1001.0     616,960  Sqlsort.dll    IA-64
   15-Jan-2005  02:15  2000.80.1001.0      45,644  Sqlvdi.dll     x86
   15-Jan-2005  02:15  2000.80.1001.0     227,328  Sqsrvres.dll   IA-64
   15-Jan-2005  02:15  2000.80.1001.0      53,760  Ssmslpcn.dll   IA-64
   15-Jan-2005  02:15  2000.80.1001.0      59,904  Ssmsqlgc.dll   IA-64
   15-Jan-2005  02:15  2000.80.1001.0     256,000  Ssnetlib.dll   IA-64
   15-Jan-2005  02:15  2000.80.1001.0      20,992  Ssnmpn70.dll   IA-64
   15-Jan-2005  02:15  2000.80.1001.0     430,080  Svrnetcn.dll   IA-64
   15-Jan-2005  02:15  2000.80.1001.0     185,856  Svrnetcn.exe   IA-64
   15-Jan-2005  02:15  2000.80.1001.0     183,296  Xplog70.dll    IA-64
Note Because of file dependencies, the most recent hotfix or feature that contains these files may also contain additional files.
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WORKAROUND

To work around this problem, rewrite the query to reduce the number of UNION ALL operators in the query.
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STATUS

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

The following example query causes the problem that is mentioned in the "Symptoms" section:
SELECT a_column FROM <table1>
UNION ALL
SELECT a_column FROM <table2>
UNION ALL
SELECT a_column FROM <table2>
... ... ... ... ... ... ...
UNION ALL
SELECT a_column FROM <table256>
... ... ... ... ... ... ...
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
(http://support.microsoft.com/kb/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 the software is released, click the following article number to view the article in the Microsoft Knowledge Base:
824684
(http://support.microsoft.com/kb/824684/ )
Description of the standard terminology that is used to describe Microsoft software updates
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Properties

Article ID: 892141 - Last Review: October 9, 2011 - Revision: 3.0
APPLIES TO
  • 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
Keywords: 
kbautohotfix kbfix kbbug kbhotfixserver kbqfe KB892141
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