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I am using MongoDB 3.0.10 with 10 databases in it,

also has implemented 3 member replica Set for it,

the question is it possible to replicate only selected databases from Primary to Secondary? If yes, then How?

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You are basically looking for filtered replication, and as of writing this answer (August 2016) it is not available as a feature in MongoDB. The relevant feature request is SERVER-1559 for tracking/voting purposes (it is currently unscheduled).

In terms of options, you can get close to what you describe with the mongo-connector but that is not an officially supported tool.

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  • Thank you for response, this saved my time searching for filtered replication for MongoDB.
    – Priyanka Kariya
    Commented Aug 3, 2016 at 5:36

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