Why Listener SID specified for Connection during RMAN duplicate

Hi all,

During duplication how does RMAN connect auilliary database after we specify the SID and even though the listener service shows it as unknown. Also why cant we specify service_name , I know if we specify service_name it will not connect why?

Regards

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Permalink Reply by Cliff Laverdiere on July 26, 2013 at 11:15am

When the listener reports a service status of "Unknown" it simply means that the registration of that service was from the SID_LIST section of the listener.ora file. It is the listener saying "You've said I should service requests for this guy. I don't know if he's there or not, but if you send a request for him, I'll try to hook you up.". If the service is actually active (database is up) when a request arrives, all will be good.

Permalink Reply by Oscar Borgmeyer on July 26, 2013 at 11:16am

The auxiliary wouldn't have registered with the listener on that node. That is why you need static registration based on the SID.

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