How to copy a collection from one database to another in MongoDB

Question

Is there a simple way to do this?

Answer 1

This won't solve your problem but the mongodb shell has a copyTo method that copies a collection into another one in the same database:

db.mycoll.copyTo('my_other_collection');

It also translates from BSON to JSON, so mongodump/mongorestore are the best way to go, as others have said.