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Insert Multiple Documents

You can insert multiple documents into a collection in a single operation by calling the insertMany() method on a MongoCollection object. To insert them, add your Document objects to a List and pass that List as an argument to insertMany(). If you call the insertMany() method on a collection that does not exist yet, the server creates it for you.

Upon successful insertion, insertMany() returns an instance of InsertManyResult. You can retrieve information such as the _id fields of the documents you inserted by calling the getInsertedIds() method on the InsertManyResult instance.

If your insert operation fails, the driver raises an exception. For more information on the types of exceptions raised under specific conditions, see the API documentation for insertMany(), linked at the bottom of this page.

The following snippet inserts multiple documents into the movies collection.

When you run the example, you should see output with the inserted documents' ObjectId values in each of the value fields:


This example connects to an instance of MongoDB using a connection URI. To learn more about connecting to your MongoDB instance, see the connection guide.

import com.mongodb.MongoException
import com.mongodb.kotlin.client.coroutine.MongoClient
import kotlinx.coroutines.runBlocking
data class Movie(val title: String)
fun main() = runBlocking {
// Replace the uri string with your MongoDB deployment's connection string
val uri = "<connection string uri>"
val mongoClient = MongoClient.create(uri)
val database = mongoClient.getDatabase("sample_mflix")
val collection = database.getCollection<Movie>("movies")
val movieList = listOf(
Movie("Short Circuit 3"),
Movie("The Lego Frozen Movie")
try {
val result = collection.insertMany(movieList)
println("Success! Inserted document ids: " + result.insertedIds)
} catch (e: MongoException) {
System.err.println("Unable to insert due to an error: $e")

For additional information on the classes and methods mentioned on this page, see the following API Documentation:

  • insertMany()

  • Document

  • InsertManyResult

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