Microsoft KB Archive/820788

= FIX: Delayed domain authentication may cause SQL Server to stop responding =

Article ID: 820788

Article Last Modified on 11/27/2007

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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
 * Microsoft SQL Server 7.0 Standard Edition

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BUG #: 200031 (SQLBUG_70)

BUG #: 235386 (SHILOH_BUGS)



SYMPTOMS
If domain authentication takes a long time to occur while Microsoft SQL Server is processing a Microsoft Windows NT authenticated login request, other users who have already successfully logged in to SQL Server may be affected. Periodic pauses may occur when the users are running queries, or in extreme cases, the SQL Server service may stop responding. This problem occurs only if a network problem or a domain controller problem causes the authentication request to take much longer than expected.



SQL Server 2000 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

SQL Server 2000 hotfix information
A hotfix for this problem is available for both SQL Server 2000 and SQL Server 7.0. The root cause of this problem is an extremely slow domain authentication request. The hotfix prevents delayed login processing for one user from slowing down other users who have already been authenticated. This hotfix does not prevent slower login times or login timeouts if authentication is too slow.

Note This hotfix (build 839) is intended to be applied on a computer that is running SQL Server 2000 Service Pack 3 (SP3) or a hotfix that is based on SQL Server 2000 SP3.

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.   Date         Time   Version        Size       File name --  31-May-2003  18:45  2000.80.818.0     78,400  Console.exe 25-Jun-2003 01:01  2000.80.818.0     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 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 08-Feb-2003 06:40  2000.80.765.0     90,692  Msgprox.dll 01-Apr-2003 02:07                     1,873  Odsole.sql 05-Apr-2003 01:46  2000.80.800.0     62,024  Odsole70.dll 07-May-2003 20:41  2000.80.819.0     25,144  Opends60.dll 02-Apr-2003 21:48  2000.80.796.0     57,904  Osql.exe 02-Apr-2003 23:15  2000.80.797.0    279,104  Pfutil80.dll 22-May-2003 22:57                    19,195  Qfe469571.sql 12-Jun-2003 16:37                 1,083,989  Replmerg.sql 04-Apr-2003 21:53  2000.80.798.0    221,768  Replprov.dll 08-Feb-2003 06:40  2000.80.765.0    307,784  Replrec.dll 05-May-2003 00:05                 1,085,874  Replsys.sql 01-Jun-2003 01:01  2000.80.818.0    492,096  Semobj.dll 31-May-2003 18:27  2000.80.818.0    172,032  Semobj.rll 29-May-2003 00:29                   115,944  Sp3_serv_uni.sql 01-Jun-2003 01:01  2000.80.818.0  4,215,360  Sqldmo.dll 07-Apr-2003 17:44                    25,172  Sqldumper.exe 19-Mar-2003 18:20  2000.80.789.0     28,672  Sqlevn70.rll 02-Jul-2003 00:18  2000.80.834.0    180,736  Sqlmap70.dll 08-Feb-2003 06:40  2000.80.765.0     57,920  Sqlrepss.dll 23-Jun-2003 22:40  2000.80.837.0  7,553,105  Sqlservr.exe 08-Feb-2003 06:40  2000.80.765.0     45,644  Sqlvdi.dll 25-Jun-2003 01:01  2000.80.818.0     33,340  Ssmslpcn.dll 01-Jun-2003 01:01  2000.80.818.0     82,492  Ssnetlib.dll 01-Jun-2003 01:01  2000.80.818.0     25,148  Ssnmpn70.dll 01-Jun-2003 01:01  2000.80.818.0    158,240  Svrnetcn.dll 31-May-2003 18:59  2000.80.818.0     76,416  Svrnetcn.exe 30-Apr-2003 23:52  2000.80.816.0     45,132  Ums.dll 02-Jul-2003 00:19  2000.80.834.0     98,816  Xpweb70.dll Note Because of file dependencies, the most recent hotfix or feature that contains these files may also contain additional files.

SQL Server 7.0 hotfix information
A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that this article describes. Apply it only to systems that are experiencing this specific problem.

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

http://support.microsoft.com/contactus/?ws=support

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.

Note This hotfix (build 1092) is intended to be applied on a computer that is running SQL Server 7.0 Service Pack 4 or a hotfix that is based on SQL Server 7.0 SP4.

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.   Date         Time   Version            Size    File name -  04-Oct-2002  23:59  7.00.1081          28,944  Dbmssocn.dll 06-Sep-2002 23:55  7.00.1077          53,520  Distrib.exe 06-Sep-2002 23:55  7.00.1077          98,576  Logread.exe 05-May-2003 18:34                     54,904  Opends60.dbg 05-May-2003 18:34  7.00.1093         155,920  Opends60.dll 06-Sep-2002 23:56  7.00.1077         250,128  Rdistcom.dll 06-Sep-2002 23:55  7.00.1077          82,192  Replmerg.exe 06-Sep-2002 23:56  7.00.1077          78,096  Replres.dll 17-Sep-2002 22:52                      7,941  Securityhotfix.sql 15-Jan-2003 23:31  7.00.1085         413,696  Semsys.dll 15-Jan-2003 20:14  7.00.1085         114,688  Semsys.rll 06-Sep-2002 23:56  7.00.1077         160,016  Snapshot.exe 08-Feb-2003 00:49                     63,834  Sp4_serv_uni.sql 15-Jan-2003 01:33  7.00.1085         344,064  Sqlagent.exe 06-Sep-2002 23:55  7.00.1077          45,056  Sqlcmdss.dll 21-Feb-2003 19:51  7.00.1088          81,920  Sqlmap70.dll 25-Apr-2003 20:22  7.00.1092       5,062,928  Sqlservr.exe 04-Oct-2002 23:59  7.00.1081          45,328  Ssmsso70.dll 17-Dec-2002 01:36  7.00.1083          24,848  Ssnmpn70.dll 26-Sep-2002 20:30                     28,408  Ums.dbg 26-Sep-2002 20:27  7.00.1079          57,616  Ums.dll 25-Feb-2003 02:40  7.00.1088         151,552  Xpweb70.dll Note Because of file dependencies, the most recent hotfix or feature that contains these files may also contain additional files.



WORKAROUND
Note that the hotfix discussed in this article will only partially ease the effects of the problem. With the hotfix, a delayed authentication request will not cause a SQL Server scheduler to stop responding. However, a delayed authentication request will still cause a SQL Server worker thread to stop responding. Even with the hotfix installed, the delayed authentication request may still cause problems such as logon time-outs. If all available worker threads have stopped responding while waiting for a domain controller, the computer that is running SQL Server will still be unresponsive. This problem occurs because of unusually slow domain authentication requests. Therefore, you can avoid this problem by addressing the root cause of the domain authentication performance problem. You can switch to a network library other than TCP/IP, such as Named Pipes, to work around the problem. You can use Client Network Utility to select a preferred network library on a client computer.



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
For more 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

Additional query words: 17883

Keywords: kbbug kbfix kbqfe kbsqlserv2000presp4fix kbsqlserv700presp5fix kbhotfixserver kbproductlink KB820788

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