SQL Server Q&A

Symptoms
When you execute an INSERT, DELETE or UPDATE query that operates on objects with underlying triggers, the query may terminate with the following error message and an Access Violation occurs:

ODBC: Msg 0, Level 19, State 1
SqlDumpExceptionHandler: Process 52 generated fatal exception c0000005 EXCEPTION_ACCESS_VIOLATION. SQL Server is terminating this process.The Access Violation may occur when the following conditions are true:The table has underlying triggers for the INSERT, UPDATE or DELETE.The trigger queries the inserted or deleted trigger tables.The NO_BROWSETABLE option is set ON.The following stack dump appears in the SQL Server 7.0 error log:

———————————————————————Short Stack Dump 0×0041012f Module(sqlservr+1012f) (FHasObjPermissions+37)0×005c4e7f Module(sqlservr+1c4e7f) (CBrowseTablePerms::FSchemaChanged+66) 0×005c5094 Module(sqlservr+1c5094) (CBrowseMode::FSchemaChanged+20) 0×0053a072 Module(sqlservr+13a072) (CStmtSelect::XretExecute+9b)0×0040fd90 Module(sqlservr+fd90) (CMsqlExecContext::ExecuteStmts+11b) 0×0040f7d0 Module(sqlservr+f7d0) (CMsqlExecContext::Execute+16b) ———————————————————————
The following stack dump appears in the SQL Server 2000 error log:

———————————————————————-Short Stack Dump004181A1 Module(sqlservr+000181A1) (FHasObjPermissions+00000050)0056BD62 Module(sqlservr+0016BD62) (CBrowseTablePerms::FSchemaChanged+00000059)0056BFC2 Module(sqlservr+0016BFC2) (CBrowseMode::FSchemaChanged+00000020)005F6F05 Module(sqlservr+001F6F05) (CStmtSelect::XretExecute+000000C2)00413CEE Module(sqlservr+00013CEE) (CMsqlExecContext::ExecuteStmts+000002D2)004133E9 Module(sqlservr+000133E9) (CMsqlExecContext::Execute+000001B6)00412918 Module(sqlservr+00012918) (CSQLSource::Execute+00000331)005F663D Module(sqlservr+001F663D) (ExecTrigger+000000C9)005F6824 Module(sqlservr+001F6824) (ExecAfterTrigs+0000019D)005F6922 Module(sqlservr+001F6922) (ExecAfterTrigsIfAny+0000007A)0041A5ED Module(sqlservr+0001A5ED) (CStmtDML::XretExecuteNormal+0000052A)0041A346 Module(sqlservr+0001A346) (CStmtDML::XretExecute+0000001C)00413CEE Module(sqlservr+00013CEE) (CMsqlExecContext::ExecuteStmts+000002D2)004133E9 Module(sqlservr+000133E9) (CMsqlExecContext::Execute+000001B6)00412918 Module(sqlservr+00012918) (CSQLSource::Execute+00000331)0044AFA7 Module(sqlservr+0004AFA7) (CStmtPrepQuery::XretExecute+00000200)00413CEE Module(sqlservr+00013CEE) (CMsqlExecContext::ExecuteStmts+000002D2)004133E9 Module(sqlservr+000133E9) (CMsqlExecContext::Execute+000001B6)00412918 Module(sqlservr+00012918) (CSQLSource::Execute+00000331)00448916 Module(sqlservr+00048916) (language_exec+000003E1)00411D4C Module(sqlservr+00011D4C) (process_commands+000000E0 Line 712+00000002)41073379 Module(UMS+00003379) (ProcessWorkRequests+0000024A)41073071 Module(UMS+00003071) (ThreadStartRoutine+000000BD)7800A27B Module(MSVCRT+0000A27B) (_unDNameEx+0000484C)77E8758A Module(KERNEL32+0000758A) (FileTimeToSystemTime+0000012F)———————————————————————-
Resolution
SQL Server 2000To resolve this problem, obtain the latest service pack for Microsoft SQL Server 2000. For additional information, click the following article number to view the article in theMicrosoft Knowledge Base:
290211?(http://support.microsoft.com/kb/290211/EN-US/) INF: How to Obtain the Latest SQL Server 2000 Service Pack
SQL Server 7.0To resolve this problem, obtain the latest service pack for Microsoft SQL Server 7.0. For additional information, click the following article number to view the article in theMicrosoft Knowledge Base:
301511?(http://support.microsoft.com/kb/301511/EN-US/) INF: How to Obtain the Latest SQL Server 7.0 Service Pack

Symptoms
Running a query with two or more nested IN clauses and a CASE statement may cause the connection to be broken and the following error to be returned:

ODBC: Msg 0, Level 19, State 1
SqlDumpExceptionHandler: Process 7 generated fatal exception c0000005 EXCEPTION_ACCESS_VIOLATION. SQL Server is terminating this process.Connection Broken
Resolution
The query caused a handled exception in SQL Server, and the process was stopped.

Symptoms
If a query that returns many bit columns is run as a parallel query and the row size passed through one of the Parallelism physical operators in the plan exceeds approximately 8 KB in size, a handled access violation may occur.
Resolution
A Parallelism physical operator is limited to handling a row size greater than approximately 8 KB in size, and normally such plans are excluded from being run as a parallel plan. Due to a bug in the calculation of the row size when handling bit columns, the query is incorrectly allowed to run in parallel but overflows a buffer allocated for transferring the data between threads.