FIX: The thread priority is raised for some threads in a parallel query

This article has been archived. It is offered "as is" and will no longer be updated.
Bug #: 471303 (SQL Server 8.0)
Microsoft SQL Server 2000 hotfixes are distributed as one downloadable file. Because the hotfixes are cumulative, each new release contains all the hotfixes and all the security fixes that were included with the previous SQL Server 2000 hotfix release.
SYMPTOMS
When a query runs as a parallel query in SQL Server 2000, the thread priority of some of the threads that are involved in parallel execution is raised. However, the thread priority of those threads is not reset after the query is finished.
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 hotfix 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.

SQL Server 2000 32-bit (x86)

   Date         Time    Version        Size        File name   -----------------------------------------------------------------------   31-May-2003  18:45   2000.80.818.0     78,400   Console.exe   25-Mar-2004  22:27   2000.80.928.0    315,968   Custtask.dll   30-Jan-2004  16:29   2000.80.911.0     33,340   Dbmslpcn.dll   25-Apr-2003  02:12                    786,432   Distmdl.ldf   25-Apr-2003  02:12                  2,359,296   Distmdl.mdf   30-Jan-2003  01:55                        180   Drop_repl_hotfix.sql   12-Sep-2003  03:26   2000.80.859.0  1,905,216   Dtspkg.dll   26-Aug-2003  20:16   2000.80.854.0    528,960   Dtspump.dll   23-Jun-2003  22:40   2000.80.837.0  1,557,052   Dtsui.dll   23-Jun-2003  22:40   2000.80.837.0    639,552   Dtswiz.dll   24-Apr-2003  02:51                    747,927   Instdist.sql   03-May-2003  01:56                      1,581   Inst_repl_hotfix.sql   30-Jan-2004  16:29   2000.80.911.0     90,692   Msgprox.dll   01-Apr-2003  02:07                      1,873   Odsole.sql   30-Jan-2004  16:29   2000.80.911.0     62,024   Odsole70.dll   30-Jan-2004  16:29   2000.80.911.0     25,144   Opends60.dll   07-May-2003  18:47                    132,096   Opends60.pdb   30-Jan-2004  16:28   2000.80.911.0     57,904   Osql.exe   02-Apr-2003  23:15   2000.80.797.0    279,104   Pfutil80.dll   04-Aug-2003  18:17                    550,780   Procsyst.sql   12-Sep-2003  00:37                     12,305   Qfe469315.sql   22-May-2003  22:57                     19,195   Qfe469571.sql   25-Mar-2004  21:03                  1,104,848   Replmerg.sql   30-Jan-2004  16:29   2000.80.911.0    221,768   Replprov.dll   30-Jan-2004  16:29   2000.80.911.0    307,784   Replrec.dll   29-Jan-2004  23:24   2000.80.911.0    159,813   Replres.rll   06-Sep-2003  00:00                  1,087,150   Replsys.sql   13-Aug-2003  16:28                    986,603   Repltran.sql   30-Jan-2004  16:29   2000.80.911.0    287,304   Rinitcom.dll   25-Mar-2004  22:27   2000.80.928.0     66,112   Semmap.dll   30-Jan-2004  16:29   2000.80.911.0     57,916   Semnt.dll   29-Jul-2003  20:13   2000.80.819.0    492,096   Semobj.dll   31-May-2003  18:27   2000.80.818.0    172,032   Semobj.rll   02-Jan-2004  19:42   2000.80.904.0     53,832   Snapshot.exe   09-Dec-2003  20:07                    117,834   Sp3_serv_uni.sql   05-Feb-2004  00:46   2000.80.913.0     28,672   Sqlagent.dll   05-Feb-2004  00:47   2000.80.913.0    311,872   Sqlagent.exe   19-Feb-2004  18:02   2000.80.916.0    168,001   Sqlakw32.dll   12-Mar-2004  04:34   2000.80.923.0     33,344   Sqlctr80.dll   30-Jan-2004  16:29   2000.80.911.0  4,215,360   Sqldmo.dll   07-Apr-2003  17:44                     25,172   Sqldumper.exe   29-Jan-2004  23:17   2000.80.911.0     28,672   Sqlevn70.rll   05-Mar-2004  17:13   2000.80.922.0    180,792   Sqlmap70.dll   03-Sep-2003  02:56   2000.80.857.0    188,992   Sqlmmc.dll   02-Sep-2003  23:03   2000.80.857.0    479,232   Sqlmmc.rll   22-Oct-2003  00:08   2000.80.871.0    401,984   Sqlqry.dll   30-Jan-2004  16:29   2000.80.911.0     57,920   Sqlrepss.dll   25-Mar-2004  22:28   2000.80.928.0  7,618,641   Sqlservr.exe   25-Mar-2004  22:28                 12,788,736   Sqlservr.pdb   30-Jan-2004  16:29   2000.80.911.0    590,396   Sqlsort.dll   30-Jan-2004  16:29   2000.80.911.0     45,644   Sqlvdi.dll   30-Jan-2004  16:29   2000.80.911.0    106,588   Sqsrvres.dll   30-Jan-2004  16:29   2000.80.911.0     33,340   Ssmslpcn.dll   30-Jan-2004  16:29   2000.80.911.0     82,492   Ssnetlib.dll   30-Jan-2004  16:29   2000.80.911.0     25,148   Ssnmpn70.dll   28-Oct-2003  04:21   2000.80.873.0    123,456   Stardds.dll   30-Jan-2004  16:29   2000.80.911.0    158,240   Svrnetcn.dll   30-Jan-2004  16:29   2000.80.911.0     76,416   Svrnetcn.exe   30-Apr-2003  23:52   2000.80.816.0     45,132   Ums.dll   30-Apr-2003  23:52                    132,096   Ums.pdb   30-Jan-2004  16:29   2000.80.911.0     98,872   Xpweb70.dll

SQL Server 2000 64-bit (IA-64)

   Date         Time    Version        Size        File name   ---------------------------------------------------------------------   16-Jul-2003  03:52   2000.80.818.0     56,832   Dbmslpcn.dll   03-May-2003  01:56                      1,581   Inst_repl_hotfix.sql   11-Mar-2003  03:42   2000.80.782.0    185,856   Msgprox.dll   16-Jul-2003  18:55   2000.80.818.0    150,528   Odsole70.dll   16-Jul-2003  19:15   2000.80.818.0    148,992   Osql.exe   26-Mar-2004  22:56                  1,104,848   Replmerg.sql   11-Mar-2003  03:42   2000.80.782.0    533,504   Replprov.dll   11-Mar-2003  03:42   2000.80.782.0    767,488   Replrec.dll   27-Mar-2004  00:04   2000.80.928.0    160,768   Semmap.dll   13-Mar-2004  08:07   2000.80.923.0     32,256   Sqlctr80.dll   01-Jun-2003  22:18   2000.80.818.0 13,845,504   Sqldmo.dll   16-Jul-2003  19:13                     39,936   Sqldumper.exe   11-Mar-2003  03:43   2000.80.782.0     23,040   Sqlmap70.dll   11-Mar-2003  03:43   2000.80.782.0    152,064   Sqlrepss.dll   27-Mar-2004  00:05   2000.80.928.0 24,941,568   Sqlservr.exe   27-Mar-2004  00:07                 20,933,632   Sqlservr.pdb   11-Mar-2003  03:43   2000.80.782.0    120,320   Sqlvdi.dll   16-Jul-2003  03:52   2000.80.818.0     53,760   Ssmslpcn.dll   01-Jun-2003  21:51   2000.80.818.0    254,976   Ssnetlib.dll   02-Jun-2003  00:41   2000.80.818.0     20,992   Ssnmpn70.dll   01-Jun-2003  21:48   2000.80.818.0    430,080   Svrnetcn.dll   01-Jun-2003  21:48   2000.80.818.0    185,856   Svrnetcn.exe   31-Mar-2003  21:27   2000.80.778.0    186,368   Xpweb70.dll
Note Because of file dependencies, the most recent hotfix or feature that contains these files may also contain additional files.
WORKAROUND
To work around this problem, set the max degree of parallelism sp_configure option to 1.
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.
MORE INFORMATION
This hotfix only fixes the thread priority problem. You may experience high CPU usage after you apply this hotfix if you run inappropriate code in the Sqlservr.exe process.
For additional information, 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
Properties

Article ID: 839589 - Last Review: 01/17/2015 08:50:39 - Revision: 3.3

  • 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
  • kbnosurvey kbarchive kbsqlserv2000presp4fix kbfix kbbug kbhotfixserver kbqfe KB839589
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