CursorOpen Event Class
The CursorOpen event class describes cursor open events that occur in application programming interface (API) cursors. Cursor open events occur when the SQL Server Database Engine defines the SQL statement to be associated with the cursor and the cursor options, and then populates the cursor.
Include the CursorOpen event class in traces that are recording the performance of cursors. When the CursorOpen event class is included in a trace, the amount of overhead incurred depends on how frequently cursors are used against the database during the trace. If cursors are used extensively, the trace may significantly impede performance.
CursorOpen 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 passed by the application rather than 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 databasestatement has been issued for a given 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 recorded = 53. | 27 | No |
| EventSequence | int | Sequence of the CursorOpen event class in the batch. | 51 | No |
| GroupID | int | ID of the workload group where the SQL Trace event fires. | 66 | Yes |
| Handle | int | Integer used by ODBC, OLE DB, or DB-Library to coordinate execution with the server. | 33 | Yes |
| 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 |
| IntegerData | int | Cursor type. Values are: 1 = Keyset 2 = Dynamic 4 = Forward only 8 = Static 16 = Fast forward |
25 | 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 identifier (SID) of the logged-in user. You can find this information in the sys.server_principals catalog view. 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 |
| RequestID | int | Request identifier that opened the cursor. | 49 | Yes |
| ServerName | nvarchar | Name of the instance of SQL Server being traced. | 26 | No |
| SessionLoginName | nvarchar | Login name of the user that 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 |
| TransactionID | bigint | System-assigned ID of the transaction. | 4 | Yes |
| XactSequence | bigint | A token that describes the current transaction. | 50 | Yes |