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15373740
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2013-03-12T22:46:10.570
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2013-09-23T17:42:41.653
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2013-09-23T17:42:41.653
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15303409
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As noted in the other stack overflow question mentioned above, MongoDB doesn't actually have the ability to rename a database. You can however, copy then delete but be aware this will cause indexes to be rebuilt. You wouldn't want to do this for a large data set. The mongo-ruby-driver (as well as most 10gen drivers) has the ability to execute any <a href="http://docs.mongodb.org/manual/reference/commands/" rel="nofollow">MongoDB command</a> through a call to the <a href="http://api.mongodb.org/ruby/current/Mongo/DB.html#command-instance_method" rel="nofollow">DB#command</a> method on any DB object instance. In the Ruby driver you would do the following: <pre><code>require 'mongo' client = Mongo::MongoClient.new db = client.db('admin') db.command({:copydb => 1, :fromdb => oldname, :todb => newname}) client.drop_database(oldname) </code></pre> Update: In newer versions of MongoDB there is a JS shell helper for db.rename() which does exactly what the ruby code above does. <pre><code>function (newName) { if(newName == this.getName() || newName.length === 0) return; this.copyDatabase(this.getName(), newName, "localhost"); this.dropDatabase(); db = this.getSiblingDB(newName); } </code></pre> In addition to that, there is the following feature request ticket for making db.rename() a first class command. Please feel free to upvote this feature. <a href="https://jira.mongodb.org/browse/SERVER-701" rel="nofollow">https://jira.mongodb.org/browse/SERVER-701</a>
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1. POHow to rename a database using MongoMapper in ruby?
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