Plan Guide Unsuccessful Event Class

The Plan Guide Unsuccessful event class indicates that SQL Server could not produce an execution plan for a query or batch that contained a plan guide. Instead, the plan was compiled without using the plan guide. The event fires when the following conditions are true:

  • The batch/module in the plan guide definition matches the batch that is being executed.

  • The query in the plan guide definition matches the query that is being executed.

  • The hints in the plan guide definition, including the USE PLAN hint, were not applied successfully to the query or batch. That is, the compiled query plan could not honor the specified hints and the plan was compiled without using the plan guide.

    An invalid plan guide might cause this event to fire. Validate the plan guide that is used by the query or batch by using the sys.fn_validate_plan_guide function, and correct the error that is reported by this function.

    This event is included in the SQL Server Profiler Tuning template.

Plan Guide Unsuccessful Event Class Data Columns

Data column name Data type Description Column ID Filterable
ApplicationName nvarchar Name of the client application that created the connection to an instance of SQL Server. This column is populated with the values that are passed by the application instead of the displayed name of the program. 10 Yes
ClientProcessID int ID assigned by the host computer to the process where the client application is running. This data column is populated if the client provides the client process ID. 9 Yes
DatabaseID int ID of the database specified by the USE database statement or the default database if no USE database statement has been issued for a specified instance. SQL Server Profiler displays the name of the database if the ServerName data column is captured in the trace and the server is available. Determine the value for a database by using the DB_ID function. 3 Yes
DatabaseName nvarchar Name of the database in which the user statement is running. 35 Yes
EventClass int Type of event = 218. 27 No
EventSequence int Sequence of a specific event within the request. 51 No
HostName nvarchar Name of the computer on which the client is running. This data column is populated if the client provides the host name. To determine the host name, use the HOST_NAME function. 8 Yes
IsSystem int Indicates whether the event occurred on a system process or a user process: 1 = system, 0 = user. 60 Yes
LoginName nvarchar Name of the login of the user (either SQL Server security login or the Microsoft Windows login credentials in the form of DOMAIN\username). 11 Yes
LoginSid image Security identification number (SID) of the logged-in user. You can find this information in the sys.server_principals or the sys.sql_logins catalog views. Each SID is unique for each login in the server. 41 Yes
NTDomainName nvarchar Windows domain to which the user belongs. 7 Yes
NTUserName nvarchar Windows user name. 6 Yes
ObjectID int Object ID of the module that was being compiled when the plan guide was applied. If the plan guide was not applied to a module, this column is set to NULL. 22 Yes
RequestID int ID of the request that is containing the statement. 49 Yes
ServerName nvarchar Name of the instance of SQL Server that is being traced. 26 No
SessionLoginName nvarchar Login name of the user who originated the session. For example, if you connect to SQL Server using Login1 and execute a statement as Login2, SessionLoginName shows Login1 and LoginName shows Login2. This column displays both SQL Server and Windows logins. 64 Yes
SPID int ID of the session on which the event occurred. 12 Yes
StartTime datetime Time at which the event started, if available. 14 Yes
TextData ntext Name of the plan guide. 1 Yes
TransactionID bigint System-assigned ID of the transaction. 4 Yes
XactSequence bigint Token that describes the current transaction. 50 Yes

See Also

Plan Guide Successful Event Class
Extended Events
sp_trace_setevent (Transact-SQL)
sys.fn_validate_plan_guide (Transact-SQL)
sp_create_plan_guide (Transact-SQL)
sp_create_plan_guide_from_handle (Transact-SQL)