dropDatabase¶

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Definition
Behavior
Example

Definition¶

dropDatabase¶

The dropDatabase command drops the current database, deleting the associated data files.

The command has the following form:

{ dropDatabase: 1 }

The mongo shell also provides the helper method db.dropDatabase().

Behavior¶

Warning

This command obtains a global write lock and will block other operations until it has completed.

Changed in version 2.6: This command does not delete the users associated with the current database. To drop the associated users, run the dropAllUsersFromDatabase command in the database you are deleting.

Warning

If you drop a database and create a new database with the same name, you must either restart all mongos instances, or use the flushRouterConfig command on all mongos instances before reading or writing to that database. This action ensures that the mongos instances refresh their metadata cache, including the location of the primary shard for the new database. Otherwise, the mongos may miss data on reads and may write data to a wrong shard.

Example¶

The following example in the mongo shell uses the use <database> operation to switch the current database to the temp database and then uses the dropDatabase command to drop the temp database:

copy

use temp
db.runCommand( { dropDatabase: 1 } )