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Object:Altered Event Class

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Applies to: SQL Server Azure SQL Database Azure SQL Managed Instance

The Object:Altered event class indicates that an object has been altered; for example, by an ALTER INDEX, ALTER TABLE, or ALTER DATABASE statement. This event class can be used to determine if objects are being altered; for example, by ODBC applications, which often create temporary stored procedures.

The Object:Altered event class always occurs as two events. The first event indicates the Begin phase. The second event indicates the Rollback or Commit phase.

By monitoring the LoginName and NTUserName data columns, you can determine the name of the user who is creating, deleting, or altering objects.

Object:Altered 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 database statement 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 = 164. 27 No
EventSequence int Sequence of a given event within the request. 51 No
EventSubClass int Type of event subclass.

0=Begin

1=Commit

2=Rollback		 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 Event sequence number of the corresponding Begin event. This column is available only for the Commit or Rollback type of event. subclass. 25 Yes
IsSystem int Indicates whether the event occurred on a system process or a user process. 1 = system, NULL = 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 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
ObjectID2 bigint Partition function ID when the partition schema is altered, the queue ID when service is altered or the collection schema ID when XML schema is altered. 56 Yes
ObjectName nvarchar Name of the object being referenced. 34 Yes
ObjectType int Value representing the type of the object involved in the event. This value corresponds to the type column in the sy.sobjects catalog view. For values, see ObjectType Trace Event Column. 28 Yes
RequestID int ID of the batch request containing the statement. 49 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 event started, if available. 14 Yes
TransactionID bigint System-assigned ID of the transaction. 4 Yes
XactSequence bigint Token that describes the current transaction. 50 Yes

See Also

Extended Events
sp_trace_setevent (Transact-SQL)