Error
Error Code:
3826
MySQL Error 3826: Table Encryption Mismatch & Privilege
Description
This error occurs when attempting to create or alter a table whose encryption setting differs from the default encryption defined for its database. It specifically indicates that the current user lacks the required privileges to perform such an operation or override the default encryption settings.
Error Message
Table encryption differ from its database default encryption, and user doesn't have enough privilege.
Known Causes
3 known causesTable Encryption Mismatch
The encryption setting specified for the table (or implied by default) does not align with the default encryption configured for the database it resides in.
Insufficient User Privileges
The MySQL user attempting the operation lacks the necessary `ENCRYPTION_KEY_ADMIN` or other relevant privileges required to manage or override encryption settings.
Unintended Database Default
The database's default encryption might be different than expected, leading to a mismatch when creating a table without explicitly defining its encryption.
Solutions
3 solutions available1. Align Table Encryption with Database Default medium
Modify the table's encryption to match the database's default, resolving the mismatch.
1
Determine the database's default encryption setting. This is usually controlled by the `table_encryption` system variable.
SHOW VARIABLES LIKE 'table_encryption';2
If the database default is not set or is different from what you intend, you might need to adjust it at the server level. This typically requires server configuration changes and a restart.
In `my.cnf` or `my.ini`:
[mysqld]
table_encryption = 'ON' # Or your desired encryption method3
Once the database default is confirmed or set, alter the specific table to use that default encryption. If the table is currently unencrypted and the database default is encrypted, you'll need to specify the encryption.
ALTER TABLE your_table_name ENCRYPTION = DEFAULT;4
If the table is encrypted with a different method, you might need to first decrypt it, then re-encrypt it with the default method, or directly alter it if the `ALTER TABLE` statement supports changing encryption types.
ALTER TABLE your_table_name ENCRYPTION = 'YOUR_CURRENT_ENCRYPTION_METHOD';
ALTER TABLE your_table_name ENCRYPTION = DEFAULT;2. Grant Necessary Encryption Privileges easy
Provide the user with the required privileges to manage table encryption.
1
Identify the user experiencing the error. This is usually shown in the error message or can be inferred from the context.
text2
Grant the `ALTER` and `CREATE` privileges on the specific table or the entire database to the user. Additionally, grant `TABLE_ENCRYPTION_ADMIN` or `SUPER` privilege which is often required for encryption operations.
GRANT ALTER, CREATE ON your_database.your_table_name TO 'your_user'@'your_host';
GRANT TABLE_ENCRYPTION_ADMIN ON *.* TO 'your_user'@'your_host'; -- Or SUPER for older versions3
Flush privileges to ensure the changes take effect immediately.
FLUSH PRIVILEGES;3. Recreate Table with Consistent Encryption medium
Create a new table with the desired encryption and migrate data, ensuring consistency.
1
Determine the correct encryption method for the table. This could be the database default or a specific desired encryption.
text2
Create a new table with the same schema as the existing table, but with the desired encryption setting. Ensure you have the necessary privileges for this operation.
CREATE TABLE your_new_table LIKE your_old_table;
-- Then alter to set encryption if not default:
ALTER TABLE your_new_table ENCRYPTION = 'YOUR_DESIRED_ENCRYPTION_METHOD';3
Copy all data from the old table to the new table.
INSERT INTO your_new_table SELECT * FROM your_old_table;4
Rename the tables to replace the old table with the new one.
RENAME TABLE your_old_table TO your_old_table_backup, your_new_table TO your_old_table;5
Verify the data and encryption settings in the new table.
SHOW CREATE TABLE your_old_table;