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Database Mirroring State Change Event Class

The Database Mirroring State Change event class indicates when the state of a mirrored database changes. Include this event class in traces that are monitoring conditions of mirrored databases.

When the Database Mirroring State Change event class is included in a trace the relative overhead is low. The overhead may be greater if the state of the mirrored databases increase.

Data Database Mirroring State Change Event Class Data Columns

Data Column Name

Data Type

Description

Column ID

Filterable

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 mirrored database.

35

Yes

EventClass

int

Type of event = 167.

27

No

EventSequence

int

Sequence of event class in batch.

51

No

IntegerData

int

Prior state ID.

25

Yes

IsSystem

int

Indicates whether the event occurred on a system process or a user process. 1 = system, 0 = user.

60

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

RequestID

int

ID of the request containing the statement.

49

Yes

ServerName

nvarchar

Name of the instance of Microsoft 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

State

int

New mirroring state ID:

0 = Null Notification

1 = Synchronized Principal with Witness

2 = Synchronized Principal without Witness

3 = Synchronized Mirror with Witness

4 = Synchronized Mirror without Witness

5 = Connection with Principal Lost

6 = Connection with Mirror Lost

7 = Manual Failover

8 = Automatic Failover

9 = Mirroring Suspended

10 = No Quorum

11 = Synchronizing Mirror

12 = Principal Running Exposed

30

Yes

TextData

ntext

Description of the state change.

1

Yes

TransactionID

bigint

System-assigned ID of the transaction.

4

Yes

See Also

Reference

Other Resources