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DB service concept

Balajidba
Balajidba Member Posts: 505 Blue Ribbon

Hi,

A service name can be associated with multiple database instances, and an instance can be associated with multiple services. The listener acts as a mediator between the client and database instances and routes the connection request to the appropriate instance. Clients connecting to a service do not have to specify which instance they want to connect to.

Could someone please explain me this concept with example and diagram as I am confused about DB instance and instance.

Regards,

Balaji

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