If the target database differs from the source database, RenameCollection simply changes the namespace. If the target database is the same as the source database, RenameCollection has different performance implications depending on the target namespace. To do it offline, it would require re-writing every single database file to accommodate the new name, and at that point it would be as slow as the current "copydb" command.Īlthough Mongodb does not provide the rename Database command, it provides the r ename Collection command, which not only modifies the collection name, but also modifies the database name. There would be absolutely no way to do this on a live system.
Mongodb compass rename collection full#
For replica sets the above would need to be done on every replica node, plus on each node every single oplog entry that refers this database would have to be somehow invalidated or rewritten, and then if it's a sharded cluster, one also needs to add these changes to every shard if the DB is sharded, plus the config servers have all the shard metadata in terms of namespaces with their full names.
This is just to accomplish a rename of a single database in a standalone mongod instance. contents of system.namespaces and system.indexes (or their equivalents in the future).internal unique names of each collection and index.every single numbered file for the collection.In MMAPv1 files, the namespace (e.g.: llection) that describes every single collection and index includes the database name, so to rename a set of database files, every single namespace string would have to be rewritten. You can customize the cookies we store on your device or change your selection at any time - thus also revoking your consent with effect for the future - under “Manage Cookies”, or “Cookie Settings” at the bottom of the page. You can find further information in our Privacy Policy.Unfortunately, this is not an simple feature for us to implement due to the way that database metadata is stored in the original (default) storage engine. This may result in the creation of pseudonymous usage profiles and the transfer of personal data to third countries, including the USA, which may have no adequate level of protection for the processing of personal data.īy clicking “Accept all”, you consent to the storage of cookies and the processing of personal data for these purposes, including any transfers to third countries. By clicking on “Decline all”, you do not give your consent and we will only store cookies that are necessary for our website. With your consent, we and third-party providers use cookies and similar technologies on our website to analyse your use of our site for market research or advertising purposes ("analytics and marketing") and to provide you with additional functions (“functional”). Step 5: Drop the original MongoDB databaseĪfter making sure that everything has been correctly copied into the new database, we can drop the original database, users. You can always track the progress in the Operations window, below the Connection Tree on the bottom-left hand side. How long this process takes will depend on how large your original database is.
Step 4: Paste the contents of the original database The database called customers should then appear in the Connection Tree. Here, we can name the newly-created database customers and click OK. Right-click on the target server (which is Studio 3T Replica Set in our example).Next, we’ll create a new database where we can paste the copied content. two databases, a database and a collection inside). If you don’t see copy options, please ensure that you have not selected more than one node (e.g.
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