MongoDB Documentation, Release 3.0.4 General Compatibility Changes Removed/Deprecated Commands The following commands are no longer available in MongoDB 3.0: The following commands and methods are deprecated in MongoDB 3.0: Platform Support Commercial support is no longer provided for MongoDB on 32-bit platforms (Linux and Win- dows). Linux RPM and DEB packages are also no longer available. However, binary archives are still available. Collection Name Validation MongoDB 3.0 more consistently enforces the collection naming restrictions . Ensure your application does not create or depend on invalid collection names. Deprecate Access to system.indexes and system.namespaces MongoDB 3.0 deprecates direct access to system.indexes and system.namespaces collections. Use the createIndexes and listIndexes commands instead. See also WiredTiger and Driver Version Compatibility (page 804). For example, consider the following update operation. Since the update operation specifies upsert:true and the query specifies conditions on the _id field using dot notation, then the update will result in an error when constructing the document to insert. db.collection.update( { "_id.name": "Robert Frost", "_id.uid": 0 }, { "categories": ["poet", "playwright"] }, { upsert: true } ) upsert:true with a Dotted _id Query When you execute an update() with upsert: true and the query matches no existing document, MongoDB will refuse to insert a new document if the query specifies conditions on the _id field using dot notation (page 171). This restriction ensures that the order of fields embedded in the _id document is well-defined and not bound to the order specified in the query If you attempt to insert a document in this way, MongoDB will raise an error. $^{234}$https://github.com/mongodb/mongo-cxx-driver $^{235}$https://github.com/mongodb/mongo-cxx-driver/releases $^{236}$https://docs.mongodb.org/ecosystem/drivers/csharp $^{237}$https://github.com/mongodb/mongo-csharp-driver/releases $^{238}$https://docs.mongodb.org/ecosystem/drivers/java $^{239}$https://github.com/mongodb/mongo-java-driver/releases $^{240}$https://docs.mongodb.org/ecosystem/drivers/node-js $^{241}$https://github.com/mongodb/node-mongodb-native/releases $^{242}$https://docs.mongodb.org/ecosystem/drivers/perl $^{243}$http://search.cpan.org/dist/MongoDB/ $^{244}$https://docs.mongodb.org/ecosystem/drivers/php $^{245}$http://pecl.php.net/package/mongo $^{246}$https://docs.mongodb.org/ecosystem/drivers/python $^{247}$https://pypi.python.org/pypi/pymongo/ $^{248}$https://docs.mongodb.org/ecosystem/drivers/python $^{249}$https://pypi.python.org/pypi/motor/ $^{250}$https://docs.mongodb.org/ecosystem/drivers/ruby $^{251}$https://rubygems.org/gems/mongo $^{252}$https://docs.mongodb.org/ecosystem/drivers/scala $^{253}$https://github.com/mongodb/casbah/releases 809 12.1. Current Stable Release • closeAllDatabases • getoptime • text