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Deadlock Graph Event Class

The Deadlock Graph event class provides an XML description of a deadlock. This class occurs simultaneously with the Lock:Deadlock event class.

Data column name

Data type

Description

Column ID

Filterable

EventClass

int

Type of event = 148.

27

No

EventSequence

int

Sequence of a given event within the request.

51

No

IsSystem

int

Indicates whether the event occurred on a system process or a user process. 1 = system, 0 = user. This value is always 1 for this event.

60

Yes

LoginName

nvarchar

Name of the login of the user (either the Microsoft SQL Server security login or the Microsoft Windows login credentials in the form of DOMAIN\username). This value is always the system user for this event.

11

Yes

LoginSid

image

Security identification number (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. This value is always the SID of the system user for this event.

41

Yes

ServerName

nvarchar

Name of the instance of SQL Server 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 deadlock was detected.

14

Yes

TextData

ntext

XML description of the deadlock.

1

Yes

TransactionID

bigint

Not used.

4

Yes

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