Connection Methods

MongoDB 5.0 is end of life as of October 2024. This version of the documentation is no longer supported. To upgrade your 5.0 deployment, see the MongoDB 6.0 upgrade procedures.

Note

For details on a specific method, including syntax and examples, click on the link to the method's reference page.

Name	Description
connect()	Connects to a MongoDB instance and to a specified database on that instance.
`Mongo()`	Creates a new connection object.
`Mongo.getDB()`	Returns a database object.
`Mongo.getDBNames()`	Returns a list of databases.
`Mongo.getDBs()`	Returns a document with a list of databases and metadata.
`Mongo.getReadPrefMode()`	Returns the current read preference mode for the MongoDB connection.
`Mongo.getReadPrefTagSet()`	Returns the read preference tag set for the MongoDB connection.
`Mongo.setCausalConsistency()`	Enables or disables causal consistency on the connection object.
`Mongo.setReadPref()`	Sets the read preference for the MongoDB connection.
`Mongo.startSession()`	Starts a session on the connection object.
`Mongo.watch()`	Opens a change stream cursor for a deployment to report on all its non-`system` collections across all its databases, excluding the internal `admin`, `local`, and `config` databases.
`Session()`	The session object.
`SessionOptions()`	The options object for the session.

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WriteResult

connect