FIX: SQL Server 7.0 Scheduler May Periodically Stop Responding During Large Sort Operation

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Article ID: 814693 - View products that this article applies to.
This article has been archived. It is offered "as is" and will no longer be updated.
BUG #: 103075 (SQLBUG_70)
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Under some rare conditions, SQL Server may report the following error message in the error log when it processes a query that includes a large, long running sort operation:

2003-02-10 17:02:54.39 ods The Scheduler 2 appears to be hung. PSS 0x5F8B3110, EC 0x5F8B32C0, UMS Context 0x050D07D8

This error message may be repeated in the error log as frequently as one time per minute, while the query is running. In some cases, the error message may also be accompanied by other symptoms. For example, SQL Server might be slow to respond to other requests. After the query completes, the server will generally return to normal operation.

A sort operation that triggers this issue may occur as a result of various Transact-SQL commands including an ORDER BY clause, a MERGE JOIN operation, or the creation of an index.


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:
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. 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
   04-Oct-2002  23:59  7.00.1081          28,944 bytes  Dbmssocn.dll     
   06-Sep-2002  23:55  7.00.1077          53,520 bytes  Distrib.exe      
   06-Sep-2002  23:55  7.00.1077          98,576 bytes  Logread.exe      
   15-Jan-2003  23:30                     99,336 bytes  Opends60.dbg
   15-Jan-2003  23:31  7.00.1085         160,016 bytes  Opends60.dll     
   06-Sep-2002  23:56  7.00.1077         250,128 bytes  Rdistcom.dll     
   06-Sep-2002  23:55  7.00.1077          82,192 bytes  Replmerg.exe     
   06-Sep-2002  23:56  7.00.1077          78,096 bytes  Replres.dll      
   17-Sep-2002  22:52                      7,941 bytes  Securityhotfix.sql
   15-Jan-2003  23:31  7.00.1085         413,696 bytes  Semsys.dll       
   15-Jan-2003  20:14  7.00.1085         114,688 bytes  Semsys.rll
   06-Sep-2002  23:56  7.00.1077         160,016 bytes  Snapshot.exe     
   08-Feb-2003  00:49                     63,834 bytes  Sp4_serv_uni.sql
   15-Jan-2003  01:33  7.00.1085         344,064 bytes  Sqlagent.exe     
   06-Sep-2002  23:55  7.00.1077          45,056 bytes  Sqlcmdss.dll     
   14-Feb-2003  05:52  7.00.1087       5,062,928 bytes  Sqlservr.exe     
   04-Oct-2002  23:59  7.00.1081          45,328 bytes  Ssmsso70.dll     
   17-Dec-2002  01:36  7.00.1083          24,848 bytes  Ssnmpn70.dll     
   26-Sep-2002  20:30                     28,408 bytes  Ums.dbg
   26-Sep-2002  20:27  7.00.1079          57,616 bytes  Ums.dll          
   17-Sep-2002  23:00  7.00.1077         151,552 bytes  Xpweb70.dll      

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


Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.


Article ID: 814693 - Last Review: October 26, 2013 - Revision: 2.4
  • Microsoft SQL Server 7.0 Standard Edition
kbnosurvey kbarchive kbautohotfix kbhotfixserver kbqfe kbsqlserv700presp5fix kbfix kbbug KB814693

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