sys.dm_os_child_instances
Returns a row for each user instance that has been created from the parent server instance.
The information returned from sys.dm_os_child_instances can be used to determine the state of each User Instance (heart_beat) and to obtain the pipe name (instance_pipe_name) that can be used to create a connection to the User Instance using SQL Server Management Studio or SQLCmd. You can only connect to a User Instance after it has been started by an external process, such as a client application. SQL management tools cannot start a User Instance.
Note
User Instances are a feature of SQL Server 2005 Express Edition only.
| Column | Data type | Description |
|---|---|---|
owning_principal_name |
nvarchar(256) |
The name of the user that this user instance was created for. |
owning_principal_sid |
nvarchar(256) |
SID (Security-Identifier) of the principal who owns this user instance. This matches Windows SID. |
owning_principal_sid_binary |
varbinary(85) |
Binary version of the SID for the user who owns the user Instance |
instance_name |
nvarchar(128) |
The name of this user instance. |
instance_pipe_name |
nvarchar(260) |
When a user instance is created, a named pipe is created for applications to connect to. This name can be used in a connect string to connect to this user instance. |
os_process_id |
int |
The process number of the Windows process for this user instance. |
os_process_creation_date |
datetime |
The date and time when this user instance process was last started. |
heart_beat |
nvarchar(5) |
Current state of this user instance; either ALIVE or DEAD. |
Permissions
Requires VIEW SERVER STATE permission on the server.
Remarks
For more information about dynamic management view, see Dynamic Management Views and Functions in SQL Server 2005 Books Online.
Example
To learn how to connect to a User Instance, see How to: Connect to a User Instance.
See Also
Other Resources
User Instances for Non-Administrators
Help and Information
Getting SQL Server 2005 Assistance
Change History
Release |
History |
17 July 2006 |
|
5 December 2005 |
|