transactionlog-event-class.md

title	TransactionLog Event Class
description	TransactionLog Event Class
author	WilliamDAssafMSFT
ms.author	wiassaf
ms.date	03/14/2017
ms.service	sql
ms.subservice	supportability
ms.topic	reference
ms.custom	ignite-2025
helpviewer_keywords	TransactionLog event class
monikerRange	=azuresqldb-current || >=sql-server-2016 || >=sql-server-linux-2017 || =azuresqldb-mi-current || =fabric-sqldb

TransactionLog Event Class

[!INCLUDE SQL Server Azure SQL Database Azure SQL Managed Instance FabricSQLDB] Use the TransactionLog event class to monitor activity in the transaction logs in an instance of the [!INCLUDEssDEnoversion].

TransactionLog 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 [!INCLUDEssNoVersion]. This column is populated with the values passed by the application rather than the displayed name of the program.	10	Yes
BinaryData	image	Binary value dependent on the event class captured in the trace.	2	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.	9	Yes
DatabaseID	int	ID of the database where the data is being logged.	3	Yes
DatabaseName	nvarchar	Name of the database in which the user statement is running.	35	Yes
EventClass	int	Type of event = 54.	27	No
EventSequence	int	Sequence of a given event within the request.	51	No
EventSubClass	int	Type of event subclass.	21	Yes
GroupID	int	ID of the workload group where the SQL Trace event fires.	66	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
IndexID	int	ID for the index on the object affected by the event. To determine the index ID for an object, use the index_id column of the sys.indexes catalog view.	24	Yes
IntegerData	int	Integer value dependent on the event class captured in the trace.	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 [!INCLUDEssNoVersion] security login or the [!INCLUDEmsCoName] 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
ObjectID	int	System-assigned ID of the object.	22	Yes
RequestID	int	ID of the request containing the statement.	49	Yes
ServerName	nvarchar	Name of the instance of [!INCLUDEssNoVersion] being traced.	26	No
SessionLoginName	nvarchar	Login name of the user who originated the session. For example, if you connect to [!INCLUDEssNoVersion] using Login1 and execute a statement as Login2, SessionLoginName shows Login1 and LoginName shows Login2. This column displays both [!INCLUDEssNoVersion] 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

See Also

sp_trace_setevent (Transact-SQL)
The Transaction Log (SQL Server)