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I have used mongodump to dump my database of mongodb, it created some bson files under dump/mydb
But I don't know how to use them. I tried mongoimport, but seems it can't import bson data. Then how to use these bson files? How to import them to another mongodb?
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Basic mongorestore syntax The basic way to restore a database is to use the mongorestore command to specify the backup directory (dump directory) without any options. This option is suitable for databases located in the localhost (127.0. 0.1) using the port 27017.
The mongodump is a utility for creating database backups. The utility can be used for creating binary export of the database contents. Mongodump can export data from both mongod and mongos instances, allowing you to create backups from: A standalone, replica set.
Mongdump does not lock the db. It means other read and write operations will continue normally.
You need to use mongorestore, not mongoimport ... which is used for things like importing json, or csv, etc.
From the back-up-with-mongodump docs:
mongodumpreads data from a MongoDB database and creates high fidelity BSON files which themongorestoretool can use to populate a MongoDB database.
mongodumpandmongorestoreare simple and efficient tools for backing up and restoring small MongoDB deployments, but are not ideal for capturing backups of larger systems.
You can read more about mongorestore in the docs below; I'd take a look and read up on them as they are very helpful.
http://www.mongodb.org/display/DOCS/Import+Export+Tools#ImportExportTools-mongorestore
You can also check out http://learnmongo.com for tips and help!
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