From:https://support.microsoft.com/en-us/help/2028589/sql-server-reports-errors-for-exceptions-assertions-and-hang-condition
Symptoms
SQL Server records the following events in the Windows Application Event Log (and SQL ERRORLOG) when execptions, assertions, or hang conditions are detected:
| EventID | Message |
| 17065 | SQL Server Assertion: File: <filename>, line = <n> Failed Assertion = '<expression>' |
| 17066 | SQL Server Assertion: File: <"filename">, line=<n> Failed Assertion = '<expression>'. This error may be timing-related. If the error persists after rerunning the statement, use DBCC CHECKDB to check the database for structural integrity, or restart the server to ensure in-memory data structures are not corrupted |
| 17067 | SQL Server Assertion: File: <"filename">, line=<n> Failed Assertion = '<expression>'. This error may be timing-related. If the error persists after rerunning the statement, use DBCC CHECKDB to check the database for structural integrity, or restart the server to ensure in-memory data structures are not corrupted |
| 17310 | A user request from the session with SPID <n> generated a fatal exception. SQL Server is terminating this session. Contact Product Support Services with the dump produced in the log directory |
| 17311 | SQL Server is terminating because of fatal exception <exception code>. This error may be caused by an unhandled Win32 or C++ exception, or by an access violation encountered during exception handling. Check the SQL error log for any related stack dumps or messages. This exception forces SQL Server to shutdown. To recover from this error, restart the server (unless SQLAgent is configured to auto restart). |
| 17883 | Process <process> (<thread id>) Worker <worker address> appears to be non-yielding on Scheduler <n>. Thread creation time: <n>. Approx Thread CPU Used: kernel <n> ms user <n> ms. Process Utilization <n>%. System Idle <n>%. Interval: <n> ms |
| 17884 | New queries assigned to process on Node <n> have not been picked up by a worker thread in the last <seconds> seconds. Blocking or long-running queries can contribute to this condition, and may degrade client response time. Use the "max worker threads" configuration option to increase number of allowable threads, or optimize current running queries. SQL Process Utilization: <n>%. System Idle: <n>% |
| 17887 | IO Completion Listener (<threadid> Worker <worker address> appears to be non-yielding on Node <n>. Approx CPU Used: kernel <n> ms, user<n> ms, Interval: <n> |
| 17888 | All schedulers on Node <n> appear deadlocked due to a large number of worker threads waiting on <wait type> Process Utilization <n>%. |
Cause
The cause for these errors is specific to the error. In many cases, assertions and exceptions are caused by a problem with the SQL Server code. Scheduler yielding problems (or hangs) may be a problem with the SQL Server code but can also be a problem with an external module or a thread delayed when calling a Windows API call.
Resolution
Find the context of the error and related stack dump information in the ERRORLOG to search for possible known issues within the Microsoft Knowledge Base. If Error Reporting is enabled, you may receive a response from Microsoft as found in the Event Log indicating a possible solution to the problem.
More Information
For more information about the products or tools that automatically check for this condition on your instance of SQL Server and on the versions of the SQL Server product, see the following table:
| Rule software |
Rule title |
Rule description |
Product versions against which the rule is evaluated |
| SQL Server 2008 R2 Best Practice Analyzer (SQL Server 2008 R2 BPA) |
Server Exception or Hang detected on server |
The SQL Server 2008 R2 Best Practice Analyzer (SQL Server 2008 R2 BPA) provides a rule to detect if any of the events listed in the Symptoms section are found in the Windows Application Event Log. The SQL Server 2008 R2 BPA supports both SQL Server 2008 and SQL Server 2008 R2. If you run the BPA tool and encounter an Error with the title of Engine - Server Exception or Hang detected on server, then you have one of the EventID values as listed in the Symptoms section of this article in your Windows Application Event Log. BPA does not filter on any date/time so it will report the number of occurrences of these events in your current Event Log. |
SQL Server 2008 SQL Server 2008 R2 |
| SQL Server 2012 Best Practice Analyzer (SQL Server 2012 BPA) |
Server Exception or Hang detected on server |
The SQL Server 2012 Best Practice Analyzer (SQL Server 2012 BPA) provides a rule to detect if any of the events listed in the Symptoms section are found in the Windows Application Event Log. If you run the BPA tool and encounter an Error with the title of Engine - Server Exception or Hang detected on server, then you have one of the EventID values as listed in the Symptoms section of this article in your Windows Application Event Log. BPA does not filter on any date/time so it will report the number of occurrences of these events in your current Event Log. |
SQL Server 2012 |