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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.

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

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