Microsoft KB Archive/867763

= FIX: An access violation exception may occur when you run a SELECT statement that contains complex JOIN operations in SQL Server 7.0 =

Article ID: 867763

Article Last Modified on 6/1/2006

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APPLIES TO


 * Microsoft SQL Server 7.0 Standard Edition

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Bug #: 200107 (SQL Server 7.0)



SYMPTOMS
When you run a SELECT Transact-SQL statement to fetch data from your Microsoft SQL Server 7.0 database, an access violation exception may occur if the query contains complex JOIN operations. Additionally, you may receive the following error message:

SqlDumpExceptionHandler: Process 9 generated fatal exception c0000005 EXCEPTION_ACCESS_VIOLATION. SQL Server is terminating this process.

You may also notice a short stack dump that is similar to the following in the SQL Server error log:

******************************************************************************* --- Short Stack Dump 0x004b74ff Module(sqlservr+b74ff) (CValSwitch::GetDataWithBuffer+17) 0x0041fb1f Module(sqlservr+1fb1f) (GetDataWithBuffer+28) 0x0041faf7 Module(sqlservr+1faf7) (GetDataWithBuffer+0) 0x00420da8 Module(sqlservr+20da8) (CValSwitch::GetDataX+19) 0x0066c8e6 Module(sqlservr+26c8e6) (CQScanSpool::GetRow+19f) 0x0042bcfd Module(sqlservr+2bcfd) (CQScanNLJoin::GetRow+121) 0x004142d5 Module(sqlservr+142d5) (CQueryScan::GetRow+11) 0x00413a37 Module(sqlservr+13a37) (CStmtQuery::FExecuteQuery+303) 0x00418724 Module(sqlservr+18724) (CStmtSelect::XretExecute+1f8) 0x00412f1e Module(sqlservr+12f1e) (CMsqlExecContext::ExecuteStmts+11b) 0x00412a33 Module(sqlservr+12a33) (CMsqlExecContext::Execute+1be) --- 2004-06-10 13:02:13.95 spid9   Error: 0, Severity: 19, State: 0 2004-06-10 13:02:13.95 spid9   language_exec: Process 9 generated an access violation. SQL Server is terminating this process.

Note This problem does not occur on an instance of Microsoft SQL Server 2000.



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  11:29  7.00.1081          28,944  Dbmssocn.dll 06-Sep-2002 11:25  7.00.1077          53,520  Distrib.exe 06-Sep-2002 11:25  7.00.1077          98,576  Logread.exe 05-May-2003 06:04                     54,904  Opends60.dbg 05-May-2003 06:04  7.00.1093         155,920  Opends60.dll 06-Sep-2002 11:26  7.00.1077         250,128  Rdistcom.dll 06-Sep-2002 11:25  7.00.1077          82,192  Replmerg.exe 06-Sep-2002 11:26  7.00.1077          78,096  Replres.dll 17-Sep-2002 10:22                      7,941  Securityhotfix.sql 06-Sep-2002 11:26  7.00.1077         160,016  Snapshot.exe 29-May-2003 15:51                     59,214  Sp4_serv_uni.sql 14-Jan-2003 13:03  7.00.1085         344,064  Sqlagent.exe 06-Sep-2002 11:25  7.00.1077          45,056  Sqlcmdss.dll 15-May-2003 11:48  7.00.1094       2,629,632  Sqldmo.dll 16-May-2003 00:59  7.00.1094          81,920  Sqlmap70.dll 22-Jun-2004 12:48  7.00.1149       5,062,928  Sqlservr.exe 15-Oct-2003 04:39  7.00.1144         315,392  Sqltrace.dll 04-Oct-2002 11:29  7.00.1081          45,328  Ssmsso70.dll 15-May-2003 11:48  7.00.1094          24,848  Ssnmpn70.dll 26-Sep-2002 08:00                     28,408  Ums.dbg 26-Sep-2002 07:57  7.00.1079          57,616  Ums.dll 16-May-2003 01:01  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 force SQL Server to create a different execution plan for the problem query. To do this, you can use one of the following methods:
 * Rewrite the query.
 * Update the statistics on all the tables that are participating in the query.



STATUS
Microsoft has confirmed that this is a bug in the Microsoft products that are listed in the &quot;Applies to&quot; section.



MORE INFORMATION
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: kberrmsg kbbug kbfix kbtsql kbqfe kbdatabase kbfile kbsqlserv700presp5fix kbquery kbhotfixserver KB867763

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