FIX: An attention signal that is sent from a SQL Server client application because of a query time-out may cause the SQL Server service to quit unexpectedly (829015)


The information in this article applies to:

  • Microsoft SQL Server 7.0 Service Pack 4
Bug #: 200067 (SQL Server 7.0)

SQL Server 7.0:200067

SYMPTOMS

If you run a query by using a SQL Server client application and the client application sends an attention signal to the server that is running SQL Server because of a query time-out, the SQL Server service may quit unexpectedly.

You may notice an error message that is similar to the following in the SQL Server error log:

2003-09-10 13:43:02.38 spid9 Found active sdes for spid 9 tabid 197575742 in clean_process

You may also notice one of the following behaviors, depending on whether parallelism is enabled or is disabled on the instance of SQL Server.

Behavior 1

If parallelism is enabled on the instance of SQL Server an assertion may occur, and then the SQL Server service may quit unexpectedly. You may see the following stack dump: 
Short Stack Dump
0x77f9741f Module(ntdll+1741f) (NtGetContextThread+b)
0x0078c44a Module(sqlservr+38c44a) (utassert_fail+1a0)
0x005bc329 Module(sqlservr+1bc329) (ExecutionContext::Cleanup+9e)
0x004cee07 Module(sqlservr+cee07) (ExecutionContext::Purge+46)
0x004ceb68 Module(sqlservr+ceb68) (stopsubprocess+e6)
0x004cd734 Module(sqlservr+cd734) (subproc_main+175)
0x41092cff Module(ums+2cff) (ProcessWorkRequests+102)
0x41093523 Module(ums+3523) (ThreadStartRoutine+139)
0x7800a27b Module(MSVCRT+a27b) (beginthread+ce)
0x77e8758a Module(KERNEL32+758a) (SetFilePointer+18a)

2003-09-10 13:28:04.99 kernel SQL Server Assertion: File: <proc.c>, line=1931 
Failed Assertion = 'm_activeSdesList.Head () == NULL'.
2003-09-10 13:28:04.99 spid9 Using 'sqlimage.dll' version '4.0.5'
Dump thread - spid = 9, PSS = 0x413e70bc, EC = 0x4402c084
Stack Dump being sent to C:\MSSQL7\log\SQL00057.dmp

Behavior 2

If parallelism is disabled on the instance of SQL Server, the SQL Server service may continue to run. However, you may notice error messages that are similar to the following in the SQL Server error log file:

2003-09-10 13:43:02.38 spid9 Found active sdes for spid 9 tabid 197575742 in clean_process
2003-09-10 13:43:09.37 spid10 Found active sdes for spid 10 tabid 197575742 in clean_process
2003-09-10 13:43:09.37 spid9 Found active sdes for spid 9 tabid 197575742 in clean_process
2003-09-10 13:43:09.40 spid8 Found active sdes for spid 8 tabid 197575742 in clean_process
2003-09-10 13:43:23.40 kernel SQL Server shutdown due to Ctrl-C or Ctrl-Break signal.

Behavior 3

If the SQL Server client application runs a stored procedure that contains the problem query by a using Remote Procedure Call (RPC) and query parallelism is disabled, the SQL Server service may quit unexpectedly. You may see error messages that are similar to the following in the SQL Server error log file:

2003-09-10 13:36:17.66 spid9 Found active sdes for spid 9 tabid 197575742 in clean_process
2003-09-10 13:36:17.66 spid9 Process 9 unlocking unowned resource: TAB: 8:197575742 []
2003-09-10 13:36:17.66 spid9 Using 'sqlimage.dll' version '4.0.5'
2003-09-10 13:36:18.82 spid10 Found active sdes for spid 10 tabid 197575742 in clean_process
2003-09-10 13:36:18.82 spid10 Process 10 unlocking unowned resource: TAB: 8:197575742 []
2003-09-10 13:36:20.73 spid8 Found active sdes for spid 8 tabid 197575742 in clean_process
2003-09-10 13:36:20.73 spid8 Process 8 unlocking unowned resource: TAB: 8:197575742 []
Dump thread - spid = 9, PSS = 0x4139d0bc, EC = 0x4139d26c
Stack Dump being sent to C:\MSSQL7\log\SQL00060.dmp
You may also see a stack dump that is similar to the following: 
Short Stack Dump
0x77f9741f Module(ntdll+1741f) (NtGetContextThread+b)
0x005bcdd4 Module(sqlservr+1bcdd4) (ex_raise2+35c)
0x004f8616 Module(sqlservr+f8616) (ex_raise+5f)
0x006e1cf5 Module(sqlservr+2e1cf5) (reportUnlockFailure+8f)
0x005abaa3 Module(sqlservr+1abaa3) (lck_unlock+120)
0x0040c45a Module(sqlservr+c45a) (RowsetLockCache::ReleaseRowsetLock+72)
0x0040341a Module(sqlservr+341a) (closetable+134)
0x005b9bbd Module(sqlservr+1b9bbd) (clean_process+f5)
0x0042b5b6 Module(sqlservr+2b5b6) (execrpc+7b3)
0x4106256e Module(opends60+256e) (execute_rpc+421)
0x4106127c Module(opends60+127c) (execute_event+21a)
0x4106142f Module(opends60+142f) (process_commands+107)
0x41092cff Module(ums+2cff) (ProcessWorkRequests+102)
0x41093523 Module(ums+3523) (ThreadStartRoutine+139)
0x7800a27b Module(MSVCRT+a27b) (beginthread+ce)
0x77e8758a Module(KERNEL32+758a) (SetFilePointer+18a)
Dump thread - spid = 8, PSS = 0x413970bc, EC = 0x4139726c
Stack Dump being sent to C:\MSSQL7\log\SQL00061.dmp

RESOLUTION

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.

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  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
   06-Sep-2002  23:56  7.00.1077         160,016  Snapshot.exe     
   30-May-2003  04:21                     59,214  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     
   16-May-2003  00:18  7.00.1094       2,629,632  Sqldmo.dll       
   16-May-2003  13:29  7.00.1094          81,920  Sqlmap70.dll     
   03-Oct-2003  01:30  7.00.1143       5,062,928  Sqlservr.exe     
   04-Oct-2002  23:59  7.00.1081          45,328  Ssmsso70.dll     
   16-May-2003  00:18  7.00.1094          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          
   16-May-2003  13:31  7.00.1094         151,552  Xpweb70.dll

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

WORKAROUND

To work around this problem, you must increase the query timeout period. To do so, you can use the query wait option in SQL Server.

For additional information about the query wait option, visit the following Microsoft Web site:

http://msdn.microsoft.com/library/en-us/adminsql/ad_config_5rfy.asp

STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section of this article.

REFERENCES

For additional information about software updates, 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


For additional information about the max degree of parallelism option in SQL Server, visit the following Microsoft Web site:

http://msdn.microsoft.com/library/en-us/adminsql/ad_config_7h9q.asp

Modification Type:MinorLast Reviewed:10/25/2005
Keywords:kbHotfixServer kbQFE kbQuery kbSqlClient KbClientServer kbClient kberrmsg kbSQLServ700preSP5fix kbfix kbbug KB829015 kbAudDeveloper
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