Error
Error Code:
1449
MariaDB Error 1449: Definer User Missing
Description
This error indicates that a database object (like a view, stored procedure, or trigger) was created with a `DEFINER` clause referencing a specific user account, but that account no longer exists or is not accessible. It typically occurs when attempting to access or execute the affected database object, leading to a permission or existence check failure.
Error Message
The user specified as a definer ('%s'@'%s') does not exist
Known Causes
4 known causesDefiner User Account Deleted
The database user account specified in the `DEFINER` clause of the affected object has been permanently removed from the MariaDB server.
Definer User Account Renamed
The user account specified as the definer was renamed, but the database object's `DEFINER` clause was not updated to reflect the new name.
Host Mismatch for Definer User
The user account exists, but the host part ('%s'@'%s') specified in the `DEFINER` clause does not match the host from which the user is connecting or where the object expects the user to exist.
Database Migration Inconsistency
After migrating a database to a new server, the definer user accounts were not properly replicated or recreated on the destination server.
Solutions
3 solutions available1. Recreate the Missing Definer User easy
Create the user that was originally set as the definer for the object.
1
Identify the missing definer user and host from the error message. The error message will typically look like: 'The user specified as a definer ('user_name'@'host_name') does not exist.'
2
Connect to your MariaDB server as a user with sufficient privileges (e.g., root).
3
Recreate the missing definer user with the appropriate privileges. Replace 'user_name' and 'host_name' with the actual values from the error message. You may need to adjust the password and privileges based on the original user's setup.
CREATE USER 'user_name'@'host_name' IDENTIFIED BY 'new_password';
GRANT ALL PRIVILEGES ON database_name.* TO 'user_name'@'host_name'; -- Adjust privileges as needed
FLUSH PRIVILEGES;4
If the error occurred during a dump restore, you might need to re-apply the definer information after recreating the user. This can often be done by re-running the relevant SQL statement or by modifying the dump file.
2. Change the Definer of the Object medium
Update the object to have a different, existing user as its definer.
1
Identify the object (stored procedure, function, view, trigger, event) that is causing the error. The error message might not directly tell you the object, so you may need to inspect the database schema or logs.
2
Connect to your MariaDB server as a user with sufficient privileges (e.g., root).
3
Determine an existing user that can be set as the new definer. This user should have the necessary permissions to create and manage such objects.
4
Use the `ALTER DEFINER` clause to change the definer of the problematic object. Replace 'new_definer_user'@'new_definer_host' with the existing user and host, and 'object_name' with the name of the object. You may need to specify the object type (PROCEDURE, FUNCTION, VIEW, TRIGGER, EVENT).
ALTER PROCEDURE object_name DEFINER = 'new_definer_user'@'new_definer_host';
-- Or for other object types:
-- ALTER FUNCTION object_name DEFINER = 'new_definer_user'@'new_definer_host';
-- ALTER VIEW object_name DEFINER = 'new_definer_user'@'new_definer_host';
-- ALTER TRIGGER object_name DEFINER = 'new_definer_user'@'new_definer_host';
-- ALTER EVENT object_name DEFINER = 'new_definer_user'@'new_definer_host';5
If you are restoring from a dump file, you can edit the dump file before importing it to change the definer for all objects. Search for lines like `/*!50017 DEFINER=`user_name`@`host_name`*/` and replace them with a valid definer.
3. Remove the Object with the Missing Definer easy
Delete the object if it's no longer needed and its definer is missing.
1
Identify the object that is causing the error.
2
Connect to your MariaDB server as a user with sufficient privileges (e.g., root).
3
If the object is not critical, you can simply drop it. Replace 'object_name' and its type (PROCEDURE, FUNCTION, VIEW, TRIGGER, EVENT) with the actual details.
DROP PROCEDURE IF EXISTS object_name;
-- Or for other object types:
-- DROP FUNCTION IF EXISTS object_name;
-- DROP VIEW IF EXISTS object_name;
-- DROP TRIGGER IF EXISTS object_name;
-- DROP EVENT IF EXISTS object_name;