Microsoft KB Archive/818763

= FIX: Intense SQL Server Activity Results in Spinloop Wait in SQL Server 2000 Service Pack 2 =

Article ID: 818763

Article Last Modified on 2/16/2007

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APPLIES TO


 * Microsoft SQL Server 2000 Service Pack 2

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BUG #: 469416 (SQL Server 8.0)



SYMPTOMS
In extremely rare situations, SQL Server may experience a 5-second &quot;batch requests&quot; stall condition. This condition is frequently described as delayed or stalled batch event processing for a 5-second period and is accompanied by a spike in SQL Server connections during or immediately following the stall pattern.



RESOLUTION
A supported fix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Apply it only to computers that are experiencing this specific problem.

To resolve this problem, contact Microsoft Product Support Services to obtain the fix. For a complete list of Microsoft Product Support Services phone numbers and information about support costs, visit the following Microsoft Web site:

http://support.microsoft.com/default.aspx?scid=fh;EN-US;CNTACTMS

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.

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 --  24-Jan-2003  18:53  2000.80.732.0      29,244  Dbmslpcn.dll 18-Jan-2003 02:23                    786,432  Distmdl.ldf 18-Jan-2003 02:23                  2,359,296  Distmdl.mdf 11-Dec-2002 17:50                        180  Drop_repl_hotfix.sql 02-Jul-2002 15:35  2000.80.650.0     107,088  Impprov.dll 17-Jan-2003 20:33                    774,409  Instdist.sql 11-Dec-2002 17:50                      1,402  Inst_repl_hotfix.sql 20-Aug-2002 16:24  2000.80.679.0     111,172  Logread.exe 15-Dec-2002 23:21  2000.80.717.0      90,692  Msgprox.dll 05-Mar-2003 18:17  2000.80.736.0      62,024  Odsole70.dll 03-Jan-2002 01:59                     18,185  Qfe356326.sql 20-Aug-2002 16:47  2000.80.679.0     135,748  Qrdrsvc.exe 26-Aug-2002 22:49  2000.80.679.0     406,088  Rdistcom.dll 04-Oct-2001 01:36                    437,302  Replcom.sql 20-Aug-2002 16:33  2000.80.679.0     152,136  Replmerg.exe 25-Nov-2002 21:43                  1,004,990  Replmerg.sql 15-Dec-2002 23:21  2000.80.717.0     221,768  Replprov.dll 15-Dec-2002 23:21  2000.80.717.0     303,688  Replrec.dll 22-Jan-2003 19:27                  1,002,101  Replsys.sql 04-Oct-2001 01:36                    881,228  Repltran.sql 26-Aug-2002 22:49  2000.80.679.0     283,208  Rinitcom.dll 16-Sep-2002 22:31                    390,045  Securityhotfix.sql 26-Aug-2002 22:49  2000.80.679.0      28,672  Sqlagent.dll 26-Aug-2002 18:39  2000.80.679.0     311,872  Sqlagent.exe 28-Aug-2002 16:32  2000.80.679.0      49,152  Sqlagent.rll 26-Aug-2002 22:49  2000.80.679.0      53,824  Sqlcmdss.dll 28-Aug-2002 16:40  2000.80.679.0      12,288  Sqlcmdss.rll 14-Jan-2003 21:39  2000.80.725.0     172,600  Sqlmap70.dll 02-May-2003 18:44  2000.80.743.0   7,483,473  Sqlservr.exe 01-Nov-2002 18:56  2000.80.698.0      45,644  Sqlvdi.dll 24-Jan-2003 18:53  2000.80.732.0      29,244  Ssmslpcn.dll 24-Jan-2003 18:53  2000.80.732.0      82,492  Ssnetlib.dll 02-Jan-2003 20:12  2000.80.722.0      25,148  Ssnmpn70.dll 02-May-2003 18:44  2000.80.743.0      49,228  Ums.dll 07-Apr-2002 02:08  2000.80.606.0      70,208  Xplog70.dll 07-Apr-2002 02:08  2000.80.606.0      53,828  Xpqueue.dll 07-Apr-2002 02:08  2000.80.606.0     156,228  Xprepl.dll 12-Jul-2002 01:00  2000.80.658.0     279,104  Xpstar.dll 16-Sep-2002 23:12  2000.80.686.0      98,872  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 at the beginning of this article.



MORE INFORMATION
SQL Server 2000 uses spin count synchronization primitives to provide appropriate internal synchronization and access to internal structures. For more information about spinning synchronization, visit the following Microsoft Web site:

http://msdn2.microsoft.com/en-us/library/ms683476.aspx

When the spin count is exceeded, the penalty can result in a delay of up to a 5,000 milliseconds, and the status of the server process ID in the sysprocesses table changes to spinloop. A status of spinloop indicates that you may be experiencing this problem. This hotfix reduces the delay to a maximum of 1 millisecond.

Note It is highly unusual to experience this problem on a single processor computer.

For additional information about this problem in SQL Server 2000 SP3, click the following article number to view the article in the Microsoft Knowledge Base:

818766 FIX: Intense SQL Server Activity Results in Spinloop Wait

Keywords: kbhotfixserver kbqfe kbfix kbbug KB818763

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