Mongodb insertmany duplicate key error. js, Python and other environments.

Mongodb insertmany duplicate key error. js, Python and other environments.

Mongodb insertmany duplicate key error. You can insert multiple documents into a collection in a single operation by calling the insertMany() method on a MongoCollection object. insert . find_one_and_update(query, update Jul 22, 2024 · Hi @Mohammad_Yusuf_Ghazi , It looks like you are facing a problem because you are doing a group and after that you need to access your full document. 465+0530 E QUERY [js] WriteError: E11000 duplicate key error collection: test. js modules folder and report back! Apr 22, 2016 · Program - use PCAP. Includes causes of the error, how to identify it, and the specific steps to take to resolve it. Our goal is to be able to perform a point in time restore of the Mongo database from T-1 FileSysytem Snapshot copy. The insert() method has the following syntax: May 10, 2010 · Issue this as a batch insert command with the 'ContinueOnError' flag=true, so the insert of everything else happens even if there's a duplicate key in there (which it sounds like there will be). The following attempts to insert a document with a _id value that already exists: Mar 14, 2019 · 上述是针对SQL Server所做的测试，理论上MySQL同理，但对于SQLite数据库，EF Core 3. There are 13867 other projects in the npm registry using mongodb. It turned out I just had to change _key to Key! The subject field had a [BsonElement ("_sub")] tag but there wasn't one for Key so _key was always null. 7M documents in mongodb (in future 10m+). Hello Team, Mongo Server: v6. Jan 29, 2018 · При значении false mongoDB может изменять порядок добавления для внутренних оптимизаций, тем самым ускоряя добавление. After prepareUnique is set, you cannot insert new documents that duplicate an index key entry. Moved Permanently. 2019-03-19T18:03:08. Apr 28, 2020 · I tried changing the names of my schema, database variable, model file name, etc. Because the same collection uses other one process for same data. app_crashusers5d72120aab9bc2004a137120 index: group_1_uid_1 dup key: { : null, : null } I am using --oplogReplay. createIndex( { user: 1, title: 1, Bank: 1 }, {unique:true} ) Please note that this should be done after you have removed previously Jun 26, 2014 · So the mongodb may automatically set the 'name' value of new record as null which is duplicate key. The duplicate key obviously doesn't exist on the dumped database as it has an unique index, but as the dump takes hours to complete, it looks like that data that was deleted ends up being into the dump and data that was created after delation while the dump is running ends up being there too. insertOne in MongoDB. Apr 6, 2016 · Of course the other error in there is because of trying to assign an "array" to the _id field, which is not allowed but also not a duplicate key error, so we filtered it: Feb 24, 2024 · The insertMany () function is used to insert documents in MongoDB database collections, as the name suggests, it can insert multiple documents at one go. Sep 5, 2018 · This is because when a document is inserted to MongoDB using insert_one (), insert_many (), or bulk_write (), and that document does not include an _id field, PyMongo automatically adds one for you, set to an instance of ObjectId. The following attempts to insert a document with a _id value that already exists: Inserting an duplicate value for any key that is part of a unique index, such as _id, throws an exception. After few documents are inserted, I am getting this error: BulkWriteError: E Feb 20, 2016 · 写操作——添加操作 mongodb提供以下操作执行添加文档操作 db. If such an Jan 11, 2021 · Hello @Christina_Sandberg, welcome to the MongoDB Community forum. However, the extra logic needed to handle infrequent updates is less costly than performing joins (lookups) on read operations. mycoll1 index: _id_ dup key: { : 1 } Handling a BulkWriteError Dec 16, 2024 · How to copy a MongoDB Collection to another Database? Copying a collection from one MongoDB database to another is useful when you need to move or duplicate data for development, backup, or scaling purposes. To insert more than one document, append the insertMany() method to the collection object, and then pass an array of documents to the insertMany() method. The Collection class is an internal class that embodies a MongoDB collection allowing for insert/find/update/delete and other command operation on that MongoDB MacOS - MongoServerError: E11000 duplicate key error collection in chunks collection May 12, 2011 · Hari Gangadharan opened DATAMONGO-134 and commented Spring Data completes a save operation involving duplicate value in an attribute marked as unique index. The following attempts to insert a document with a _id value that already exists: Tags: node. Steps we python mongodb mongoengine Follow this question to receive notifications edited Jan 16, 2018 at 12:46 Sebastian Karlsson. You can specify more options in the options object passed as the second parameter of the insertMany() method. Mar 23, 2023 · The E11000 duplicate key error index is an error that occurs when we try to insert a document into a MongoDB collection with a unique index, and the index already contains a document with the same value for the unique key. Redirecting to /docs/drivers/rust/current/usage-examples/insertmany/ The first write failure that occurs (e. Issue: Around the 13 Million records inserted I get _id - duplicate key in index Exception. insertMany() 操作成功插入了一个或多个文档，则该操作会为每个插入的文档在 oplog （操作日志）上添加一个条目。 Jan 11, 2021 · Hello @Christina_Sandberg, welcome to the MongoDB Community forum. Latest version: 6. Jun 21, 2021 · So it’s complaining about a duplicate key of 123 which technically should not be in the index, but it actually is: This is because I think you need $elemMatch for the partial filter expression (since it involves an array, and you’re matching one element of the array), where it’s not supported yet. 4, you can create collections and indexes inside a multi-document transaction if the transaction is not a cross-shard write transaction. That is the Unique Index on the person’s “name” field. If an _id is provided, it must be unique to avoid duplicate key errors. Oct 16, 2016 · I am trying to insert data in mongoDB document but I am getting duplicate error in it. collection. insertOne () 3. Before handling the multi-statement case, let's consult with other Dec 4, 2023 · MongoDB. May 17, 2017 · Please note, insertOrIgnore will ignore duplicate records and also may ignore other types of errors depending on the database engine. Attempting to insert a field to a value that would violate unique index rules will throw a duplicate key error. 如果 db. For example, the following insert operation results in an error: It may be feasible for multi-statement writes (e. Going to try to do the same with the node. Types of Middleware Mongoose has 4 types of middleware: document middleware, model middleware, aggregate middleware, and query middleware. js. Insert duplicate records into a new collection, ensuring full documents are copied. Spring's The insertMany() takes an array of documents to insert into the specified collection. It even creates a new oid but the record is not really saved to the DB. I tried the set 'name' key as not unique key {name: {unique: false, type: String}} in 'User' schema in order to override original setting. Sep 22, 2020 · And then I get the errors: Failed: restore error: error applying oplog: applyOps: E11000 duplicate key error collection: countly. Right now the unique index means you can only have one user with a null mobile value From MongoDB docs on Sparse Indexes Sparse indexes only contain entries for documents that have the indexed field, even if the index field contains a null value. After adding any number of insert, update, and delete operations, the command may be executed via MongoDB\Driver\Manager::executeBulkWriteCommand (). In this guide, you can learn how to use bulk operations in the MongoDB Kotlin Driver. 如果您的集合使用 模式验证 并将 validationAction 设置为 error ，则插入无效文档会引发 MongoServerError 且 db. Learn how to fix the e11000 duplicate key error in MongoDB collections with this step-by-step guide. "")") } Output: duplicate key error: 1 E11000 duplicate key error collection: mydb. It occurs infrequently, but consistently. Documents can be inserted with or without an _id; if omitted, MongoDB assigns a unique ObjectId automatically. 0, last published: a day ago. Before you duplicate data, consider the following factors: How often the duplicated data needs to be updated. If the document contains an _id field, the _id value must be unique within the collection Definition ¶ db. Inserting an duplicate value for any key that is part of a unique index, such as _id, throws an exception. bulkWrite() method provides the ability to perform bulk insert, update, and delete operations. Bulk write operations affect a single collection. Apr 30, 2022 · MongoServerError: E11000 duplicate key error collection: DB1. MongoDB provides clients the ability to perform write operations in bulk. We then performa `replaceOne ()` with `upsert (true)`. 2 New additions Db. 4 and greater, if you specify an insert on a non-existing collection in a transaction, the collection is implicitly created. If such an E11000 duplicate key error index in mongodb mongoose CS techware 224 subscribers Subscribe Sep 24, 2025 · This insertOne () method is part of the MongoDB driver for various programming languages and can be used in MongoDB Shell, Node. If there are various write errors in the bulk write exception (possible if ordered is false), we should leave the exception as-is so that users can make sense of it. The insertMany throw E11000 duplicate key error although the data is saved succeed in database. Starting in MongoDB 4. 2 新添加 db. Thanks for pointing me in the right direction! Inserting a duplicate value for any key that is part of a unique index, such as _id, throws an exception. Frequently updating duplicated data can cause heavy workloads and performance issues. To insert them, add your Document objects to a List and pass that List as an argument to insertMany(). Structure of document is something like this: { _id: 14124412, Sep 28, 2016 · mongodb插入数据出现大量报错，报错之前停过应用程序，也有删除过数据。 mongodb是单实例的。 报错的字段为mongodb自带的_id， 之前理解_id 是 时间戳+主机+进程号+序列 组成。 请问时间戳是怎么来的？感觉不是读取的应用主机的时间，如果是应用主机时间，时间戳上就不会重复，但是现在就是重复 Write operation--add operation MongoDB provides the following actions to perform the Add document operation Db. insert ()` for efficient document insertion in MongoDB. You should use a compound index on the set of fields that uniquely identify a document within your MongoDB collection. insert() 首先介绍下 insertone() 操作 语法规则： Feb 25, 2019 · There is a workaround in our project to handle duplicate key error when two threads are doing upsert: try: await db. MongoDB Bulk. The reason I'm mentioning this is because this changed how ObjectIds are generated: the 3-byte machine identifier and 2-byte process identifier were replaced with a 5-byte random value. insertOne() 3. insertOne( <document>, { writeConcern: <document> } ) writeConcern w: 몇 개의 mongod 에 저장 후 응답할 지 설정 <숫자>: 몇 개의 mongod 에 기록될 지 직접 지정 “majority”: 과반의 mongod 에 기록되게 설정 <커스텀 write concern 이름>: 특정 데이터 Mongoose always validates each document before sending insertMany to MongoDB. Feb 24, 2020 · And I see, that this method works better than previous and not overload the mongo. For example, insertOrIgnore will bypass MySQL's strict mode. insert () method Oct 20, 2017 · It seems that MongoDB insertMany() function with ordered option set to false can insert documents more efficiently than with ordered option set to true. E11000 (duplicate key error) should return a list of duplicate keys and _ids in insert, bulk insert, and continue_on_error inserts. Feb 26, 2020 · The ObjectID spec was introduced in ext-mongodb 1. Is there another option to run on mongorestore to avoid these errors? thanks May 11, 2025 · A "duplicate key error" in MongoDB typically occurs when you try to insert a document with a value for a field that is supposed to be unique, but that value already exists in the collection. The index skips over any document that is missing the indexed field. We await the promise to get the result of the operation, which we then use to log the number of documents that are inserted to the console. Aug 3, 2022 · The error indicates that we are inserting a document for id 6 which already contains a document and hence throws duplicate key error for id of value 6. This will not allow an operation to insert a new document with an existing name or update a document with an updated existing name. Our collection has a unique key defined on a combination of fields. js, Python and other environments. Specifically, in MongoDB 4. So if one document has a validation error, no documents will be saved, unless you set the ordered option to false. Please see below illustration to make you understand this better. So, let’s break down your requirements. In fact, insert_one doesn't cause the error but the inserted_id causes the duplicate error. insertMany, bulkWrite) if all errors in the BulkWriteException can be classified as a DuplicateKeyException. Is there a way of telling MongoDB to skip (instead of crashing) if we want to insert a document which has the same _id as an existing one? Say, I have this list and I want to persist it: to_mongo Insert Several Document Specifying an _id Field ¶ The following example/operation uses insertMany() to insert documents that include the _id field. По умолчанию используется true и mongoDB вставляет документы в указанном порядке. But sometimes I get errors for Duplicate key error. Olas index: id dup key: { : BinData (3, 00000000000000000000000000000000) } This is the code that adds Data to the DB Nov 12, 2024 · My questions are: What is causing this behavior? Looking at the operation, I would assume that either the insert is performed first and would then be overridden by the update or the insert is performed second which would throw a duplicate key exception due to the unique index _id. insertOne() 会失败。 Create a proxy collection to enforce unique constraints on non-shard key fields using unique indexes. E11000 duplicate key error even if inserted values for the unique field are different My MongoDB query: Query not successful even if: lovely # love MongoDB applys stemming if a language is specified for a text index. avoidDuplicateEntriesDemo index: UserName_1 dup key: { : "John" } : Feb 20, 2016 · I'm trying to make a quick script to initialize my development collections in Meteor and I found something weird. If you use "save" with an ID that is already in the same collection, it will get updated/overwritten. While defining the schema, I have given the value of "role" as default Jan 16, 2024 · To avoid errors due to duplicate records, follow the steps below Use the ON DUPLICATE KEY UPDATE or ON CONFLICT DO UPDATE clauses to handle duplicate records in MySQL or PostgreSQL, respectively. I have an index in collection “persons” which shall avoid inserting duplicate documents with the same person name. Delete duplicate records from the original collection, keeping one original Dec 3, 2018 · However, if an _id key is passed, save () will update the document, while insert () will throw a duplicate key error. Some of them represent duplicate entry which I do not want. questions index: themes_1 dup key: { themes: null } I created 2 Schemas, 1 per DB and they are different Apr 20, 2021 · Exception while invoking method ‘’ BulkWriteError: E11000 duplicate key error collection: meteor. Start using mongodb in your project by running `npm i mongodb`. The index is “sparse” because it does not I have approximately 1. Here is a reduced example of what I got: B = new SimpleSchema({ name: { breaks during the insertion and few records are inserted? How to get the Sep 3, 2020 · Thanks for the reply! I didn't insert the post again. Sep 29, 2020 · Duplicate Key Error (maybe not related with Fastapi-user but help needed) #349 May 19, 2019 · When I try to add data, I get the error: E11000 duplicate key error collection: aap. Unlike MongoDB\Driver\BulkWrite, where all write operations must MongoDB Enterprise: MongoDB의 구독 기반 자체 관리 버전 MongoDB Community: MongoDB의 소스 사용 가능 무료 자체 관리 버전 구문 insertMany() 메서드의 구문은 다음과 같습니다. For example, if you decide that the combination of user, title and Bank are your unique key you would issue the following command: db. The details attibute of the exception instance provides the execution results up until the failure occurred and details about the failure - including the operation that caused the failure. Apr 15, 2015 · I'm building a simple REST api with spring-boot-starter-data-mongodb and I always get a E11000 duplicate key error when attempting to insert my 2nd row. A comprehensive guide with syntax, examples, common errors, and best practices. Mar 5, 2019 · I am trying to insert an array of objects (data pulled from an external api)into a mongoDB using db. Most drivers create an ObjectId and insert the _id field, but the mongod will create and populate the _id if the driver or application does not. index: id dup key: { _id: “kB2kLMmpt66zxhJaf” } Here is the jist of my loop: Nov 26, 2024 · Learn how to use db. insert () Add insert operations to a bulk list using `Bulk. MongoDB allows applications to determine the acceptable level of acknowledgement required for bulk write operations. 문법 db. MongoDB 创建唯一索引时出现 E11000 重复键错误 在本文中，我们将介绍在使用 MongoDB 创建唯一索引时可能会遇到的 E11000 重复键错误，并提供一些解决方法和示例。 阅读更多：MongoDB 教程 什么是唯一索引？ 在 MongoDB 中，索引是用于快速查询和排序数据的数据结构。唯一索引是一种特殊的索引类型，它 Inserting an duplicate value for any key that is part of a unique index, such as _id, throws an exception. If you call the insertMany() method on a collection that does not exist yet, the server creates it for you. 0. MongoDB also supports bulk insert through Learn how to save scraped data to PostgreSQL, MySQL, MongoDB, and other databases using n8n workflows with practical examples. Here is my codes: Specifying incorrect parameters for your insertMany () operation can cause problems. 5. And it can continue inserting documents even @PabloCesarCordovaMorales I've literally uninstalled and reinstalled MongoDb. js mongodb mongoose I am using mongoose to insert bulk data to database. x提供了全局方案：通过数据连接字符串配置【Foreign Keys = False】全局抑制建立外键约束。 The insertMany() takes an array of documents to insert into the specified collection. The insertMany() takes an array of documents to insert into the specified collection. The question is: If there is any way to update docs without delete and insert or update/replace one? Jun 4, 2020 · I think you need a sparse index. The database receives multiple updates/deletions/inserts for the records. insertMany() 3. 17. insertOne() 도큐먼트를 하나 추가합니다. g. The value of _id must be unique within the collection to avoid a duplicate key error. The following attempts to insert a document with a _id value that already exists: Introduction ¶ MongoDB\Driver\BulkWriteCommand collects one or more write operations that should be sent to the server using the » bulkWrite command introduced in MongoDB 8. It takes an array as an argument containing many documents to be inserted into a given MongoDB database collection. Jun 4, 2025 · The official MongoDB driver for Node. insertMany () 3. We're getting a duplicate key error exception in a situation where one should never be occurring. Do you have any other unique indexes on your test collection? Can you include the actual duplicate key error message (which should have the details of the index and Feb 23, 2021 · Create Operations db. You can specify additional options in the options object passed as the second parameter of the insertMany() method. but I could only get the duplicate key error to go away by deleting my old cluster and starting fresh with a new one - of course this means the first app I created won’t work now. The insertMany() method returns a promise. 4 Operating System: Amazon Linux2 Mode: 3 Node Replicaset Background: We create nightly snapshots of EBS Volume of /data mount location of our primary replicaset. The MongoClient performs these operations by making a request to the database corresponding to each operation Mongodb appears E11000 duplicate key error collection (id duplicate solution), Programmer Sought, the best programmer technical posts sharing site. The db. If the document does not specify an _id field, then mongod adds the _id field and assign a unique ObjectId() for the document before inserting or upserting it. local is coming NYC, London and a city near you! Use code Community50 for 50% off your registration. 2新添加 db. Apr 25, 2013 · If you attempt to use "insert" with an ID that was previously used in the same collection you will get a duplicate key error. Net reads a pcap file - for each packet it creates a packetBson object, when a 1 million objects are added to my list, it calls insertMany for the collection. Jun 23, 2025 · Learn various methods to insert documents into MongoDB collections using the insertOne() and insertMany() methods in the mongosh shell. duplicate key error) aborts the remaining operations, and PyMongo raises BulkWriteError. For example, to insert one document and then update multiple documents, you can use the insertOne() method and the updateMany() method. insert() ¶ Inserts a document or documents into a collection. Regardless, as we prefer to use the issue tracker only for bugs and enhancements, please post a question on StackOverflow first. Identify duplicate records based on a key. Upon successful insertion, insertMany() returns Aug 4, 2021 · Spring Data MongoDB has a dedicated issue tracker. For individual CRUD operations, you can use the relevant method. 5iexj fap6 ort ixdy ajiz xb ql5vny 9kx l6f uwbrk