Note: CICS DA saves a local copy of the model in the CICS Explorer workspace on your computer. This model contains information about your environment and your systems, and it is strongly suggested that you secure the information, according to your company's security procedures, to prevent unauthorized access.
When discovery runs on an MVS™ image, the names of the TCP/IP stacks are queried to obtain the primary IP address of those stacks. The z/OS UNIX System Services host service is used to query the domain name server and resolve the IP address to a name. If a name is returned, this name is passed to the CICS DA server. If no name is returned, then the IP address is not passed to the CICS DA server.
Because this part of the discovery process runs on the MVS image, the name for the primary IP address might be a locally administered name that is not visible to the client. If that is the case, then the client might need to have its TCP/IP configuration altered; for example, by altering the client hosts file, to allow the client to use the host names that the discovery process adds to the model.
When you initiate discovery from the client, the CICS DA server starts a number of discovery tasks. The first discovery task is to identify all the MVS images in the sysplex. The discovery tasks then look at the regions that are running on each selected MVS image and identify supported releases of CICS, other running subsystems, and any Authorized Cross-Memory (AXM) servers. The discovered resources are then further analyzed, and any associated resources and logical system information, such as connections, are identified and the model is created in the server. The discovery might take a long time, depending on the number of MVS images in your sysplex and the number of subsystems discovered. However, you can continue to view a model that you have previously loaded while the discovery tasks are running, but you cannot make changes to the model.
This task initiates a discovery operation on the CICS DA server and loads the model into the CICS DA client. You must have an active CICS DA connection before you can initiate discovery.
If you have a local model, when you click Finish CICS DA deletes the local model. The new model is then loaded into your local workspace and is shown in the connection navigation tree in the DA Explorer view.