DROP DATABASE

Function

Delete the database.

Precautions

• Only the owner of a database or a system administrator has the permission to run the DROP DATABASE command.
• DROP DATABASE does not take effect for the three preinstalled system databases (gaussdb, TEMPLATE0, and TEMPLATE1) because they are protected. To check databases in the current service, run the \l command of gsql.
• This command cannot be run while the database to be deleted is associated with a user. You can check the current database connections in the v$session view.
• DROP DATABASE cannot be run inside a transaction block.
• If DROP DATABASE fails to be run and is rolled back, run DROP DATABASE IF EXISTS.
• If a "database is being accessed by other users" error is displayed when you run DROP DATABASE, it might be that threads cannot respond to signals in a timely manner during the CLEAN CONNECTION process. As a result, connections are not completely cleared. In this case, you need to run CLEAN CONNECTION again.

• Be cautious when using DROP OBJECT (e.g., DATABASE, USER/ROLE, SCHEMA, TABLE, VIEW) as it may cause data loss, especially with CASCADE deletions. Always back up data before proceeding.
• For more information about development and design proposal, see DWS Development and Design Proposal.

Syntax

1

DROP DATABASE [ IF EXISTS ] database_name ;

Parameter Description

Examples

Delete the database named music.

1

DROP DATABASE music;

Links

CREATE DATABASE, ALTER DATABASE

FAQs

If you see this error while running the DROP DATABASE command, another user is connected to the database.

1

database "mysql_compatible_db" is being accessed by other users Detail: There are 2 other sessions using the database.

Disconnect all users from the database.

1

CLEAN CONNECTION TO ALL FORCE FOR DATABASE mysql_compatible_db;

Retry the DROP DATABASE command—it should work. If it does not, perform CLEAN CONNECTION and attempt again.

1

DROP DATABASE mysql_compatible_db;