Microsoft KB Archive/839589

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

Article ID: 839589

Article Last Modified on 11/2/2007

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

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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.



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 &quot;Applies to&quot; 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

Keywords: kbbug kbfix kbqfe kbsqlserv2000presp4fix kbhotfixserver KB839589

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