How do I drop a Sharded collection?

How do I drop a Sharded collection?

WORKAROUNDS

1. Drop the database / collection using a mongos.
2. Rerun the drop command using a mongos.
3. Connect to each mongos and run flushRouterConfig.

What is Sharded collection?

Sharding is a method for distributing data across multiple machines. Database systems with large data sets or high throughput applications can challenge the capacity of a single server. For example, high query rates can exhaust the CPU capacity of the server.

How do I drop all collections in MongoDB?

For everybody else.

1. List out all available dbs show dbs.
2. Choose the necessary db use.
3. Drop the database db.dropDatabase() //Few additional commands.
4. List all collections available in a db show collections.
5. Remove a specification collection db.collection.drop()

When you insert a document to a MongoDB collection you have to specify the primary key?

In MongoDB, _id field as the primary key for the collection so that each document can be uniquely identified in the collection. The _id field contains a unique ObjectID value. When you query the documents in a collection, you can see the ObjectId for each document in the collection.

How do I clear my MongoDB database?

Then you can use “show dbs” command for checking the list of Databases. Then select the database you want to delete using command “use databasename“. Then execute db. dropDatabase() command to drop an existing database.

What will the query DB products deleteMany do?

deleteMany() is a mongo shell method, which can delete multiple documents. This method can be used in the multi-document transactions. If you use this method in capped collection, then it will throw an exception.

Is there a way to drop a database?

You cannot drop a database currently being used however you can use sp_detach_db stored procedure if you want to remove a database from the server without deleting the database files. just renaming the DB (to be delete) did the trick for me. it got off the hold of whatever process was accessing the database, and so I was able to drop the database.

What is the default write concern for db.dropdatabase ( )?

Removes the current database, deleting the associated data files. The db.dropDatabase () method takes an optional parameter: Optional. A document expressing the write concern to use if greater than “majority”. Omit to use the default/minimum write concern of “majority”.

How to get rid of SQL Server database?

First make your data base offline after that detach it e.g. Stop the SQL Server Service. Delete the corresponding .mdf and .ldf files. Start the SQL Server Service.