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MS SQL Maestro online Help

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Queues

MS SQL Maestro supports Service Broker communications designed around reliable, asynchronous message delivery. Queues store messages. When Service Broker receives a message for a service, Service Broker inserts the message into the queue for that service. To get messages sent to the service, an application receives messages from the queue. Service Broker manages queues and presents a view of a queue that is similar to a table.

 

Each service is associated with one queue. When a message arrives for a service, Service Broker places the message in the queue associated with that service.

 

Each message is a row in the queue. The row contains the content of the message as well as information about the message type, the service targeted by the message, the contract that the message follows, the validation performed on the message, the conversation that the message is a part of, and information internal to the queue. An application uses the information in the message row to identify each message uniquely and process the message appropriately.

 

 

Create Queue Wizard guides you through the process of creating a new queue. In order to run the wizard you should either

 

•select the Object | Create Database Object... main menu item;
•select the Queues icon in the Create Database Object dialog

or

•select the Queues list or any object from that list in the explorer tree;
•select the Create Queue ... item from the popup menu

or

•open the schema in Schema Editor and the Queues tab there;
•press the Insert key or select the Create New Queue ... item from the popup menu (alternatively, you may use the corresponding link of the Navigation Bar).

       

To create a new queue with the same properties as one of the existing one has:

 

•select the Object | Duplicate Database Object... main menu item;
•follow the instructions of Duplicate Object Wizard.

 

 

 

Queue Editor allows you to change queue status, retention, and also activation options. In order to run the editor you should either

 

•select the queue for editing in the explorer tree (type the first letters of the queue name for quick search);
•select the Edit Queue ... item from the popup menu

or

•open the schema in Schema Editor and the Queues tab there;
•select the queue to edit;
•press the Enter key or select the Edit Queue item from the popup menu (alternatively, you may use the corresponding link of the Navigation Bar).

 

 

 

To drop a queue:

 

•select the queue to drop in the explorer tree;
•select the Drop Queue item from the popup menu

 

and confirm dropping in the dialog window.

 


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