sys.service_queues (Transact-SQL)
Contains a row for each object in the database that is a service queue, with sys.objects.type = SQ.
Column name  | 
Data type  | 
Description  | 
|---|---|---|
<inherited columns>  | 
  | 
For a list of columns that this view inherits, see sys.objects (Transact-SQL).  | 
max_readers  | 
smallint  | 
Maximum number of the concurrent readers allowed in the queue.  | 
activation_procedure  | 
nvarchar(776)  | 
Three-part name of the activation procedure.  | 
execute_as_principal_id  | 
int  | 
ID of the EXECUTE AS database principal. NULL by default or if EXECUTE AS CALLER. ID of the specified principal if EXECUTE AS SELF EXECUTE AS <principal>. -2 = EXECUTE AS OWNER.  | 
is_activation_enabled  | 
bit  | 
1 = Activation is enabled.  | 
is_receive_enabled  | 
bit  | 
1 = Receive is enabled.  | 
is_enqueue_enabled  | 
bit  | 
1 = Enqueue is enabled.  | 
is_poison_message_handling_enabled  | 
bit  | 
1 = poison message handling is enabled in the queue.  | 
is_retention_enabled  | 
bit  | 
1 = Messages are retained until dialog end.  | 
Permissions
In SQL Server 2005 and later versions, the visibility of the metadata in catalog views is limited to securables that a user either owns or on which the user has been granted some permission. For more information, see Metadata Visibility Configuration.