Error
Error Code:
1306
MariaDB Error 1306: Cannot Drop Database Object
Description
This error indicates that MariaDB was unable to successfully execute a `DROP` statement for a specified database object. It commonly occurs when attempting to remove stored procedures, functions, views, or other schema objects from the database.
Error Message
Failed to DROP %s %s
Known Causes
4 known causesInsufficient Privileges
The user attempting the `DROP` operation lacks the necessary permissions for the specific object or database.
Object Does Not Exist
The specified database object (e.g., stored procedure, function, view) does not exist in the current database or schema, or its name is misspelled.
Object In Use or Has Dependencies
The object cannot be dropped because it is currently being used by another session or has dependent objects that must be dropped first.
Incorrect Database Context
The `DROP` statement is executed while not connected to the correct database where the object resides.
Solutions
3 solutions available1. Verify Object Existence and Permissions easy
Ensure the object exists and you have the necessary privileges to drop it.
1
Connect to your MariaDB server as a user with sufficient privileges (e.g., root).
mysql -u root -p2
Check if the database object (table, view, procedure, etc.) actually exists. Replace `%s %s` with the actual object type and name from the error message.
SHOW TABLES LIKE 'your_table_name';
-- or
SHOW VIEW LIKE 'your_view_name';
-- or
SHOW PROCEDURE STATUS WHERE Name = 'your_procedure_name';
-- or
SHOW FUNCTION STATUS WHERE Name = 'your_function_name';3
If the object exists, verify your user's privileges. Replace 'your_user' and 'your_database' accordingly.
SHOW GRANTS FOR 'your_user'@'localhost';4
If privileges are insufficient, grant the necessary permissions. For example, to drop tables in a specific database:
GRANT DROP ON your_database.* TO 'your_user'@'localhost';
FLUSH PRIVILEGES;5
Attempt to drop the object again.
DROP TABLE your_table_name;
-- or
DROP VIEW your_view_name;
-- etc.2. Check for Active Connections or Locks medium
An active connection or lock might prevent the object from being dropped.
1
Connect to your MariaDB server.
mysql -u root -p2
Identify any active processes or locks that might be related to the object you're trying to drop. Replace `%s %s` with the object name.
SHOW PROCESSLIST;
-- Look for queries involving your_table_name or other related operations.
-- Alternatively, for more detailed locking information (especially in newer MariaDB versions):
SELECT * FROM information_schema.innodb_locks;
SELECT * FROM information_schema.innodb_lock_waits;3
If you find a process that seems to be holding a lock on the object, you can terminate it. Be cautious, as this will interrupt the associated query. Replace `process_id` with the ID from SHOW PROCESSLIST.
KILL process_id;4
Once you are confident no active processes are interfering, try dropping the object again.
DROP TABLE your_table_name;3. Restart MariaDB Service easy
A service restart can clear transient issues and release locks.
1
Gracefully stop the MariaDB service. The command may vary depending on your operating system and installation method.
sudo systemctl stop mariadb2
Wait a few moments for the service to fully shut down.
sleep 103
Start the MariaDB service.
sudo systemctl start mariadb4
Connect to MariaDB and attempt to drop the object.
mysql -u root -p
DROP TABLE your_table_name;