MySQL Error: Access Denied for DEFINER While restoring backup

MySQL Error: Access Denied for DEFINER

Error Message:

scss
ERROR 1227 (42000): Access denied; you need (at least one of) the SUPER, SET USER privilege(s) for this operation

📌 Cause:

This error occurs when importing or executing SQL that includes a DEFINER clause like:

sql
/*!50017 DEFINER=`user`@`host`*/

🔍 Why this happens:

• The specified DEFINER user does not exist on the server.

• The current user running the import lacks SUPER or SET USER privileges (especially on MySQL 8.0+).

• MySQL is attempting to enforce security boundaries for triggers, views, or procedures.

✅ Fixes:

1. 🧹 Remove or Ignore the DEFINER Clause (Most Recommended)

SQL Method:

Edit the SQL dump and remove or comment out lines like:

sql
/*!50017 DEFINER=`user`@`host`*/

Command Line Method:

Filter during import using sed:

• For .sql:

  bash
  sed 's/DEFINER[ ]*=[ ]*[^*]*\*/\*/g' backup.sql | mysql -u root -p database_name

• For .sql.gz:

  bash
  zcat backup.sql.gz | sed 's/DEFINER[ ]*=[ ]*[^*]*\*/\*/g' | mysql -u root -p database_name

2. 🧑‍💻 Create the Missing DEFINER User

If you want to retain the DEFINER:

Example for agarwals@%:

sql
CREATE USER 'agarwals'@'%' IDENTIFIED BY 'your_password'; 
GRANT ALL PRIVILEGES ON *.* TO 'agarwals'@'%';

3. 🔐 Grant Required Privileges to the Current User

If you control the server and are importing as a different user:

For MySQL < 8.0.26:

sql
GRANT SUPER ON *.* TO 'your_user'@'your_host';

For MySQL ≥ 8.0.26:

sql
GRANT SET USER, TRIGGER ON *.* TO 'your_user'@'your_host';

4. 🧰 Frappe/ERPNext Specific: Restore Backup Without DEFINER

bash
gunzip -c backup.sql.gz | sed 's/DEFINER[ ]*=[ ]*[^*]*\*/\*/g' > clean_backup.sql bench --site your-site-name restore clean_backup.sql

✅ Summary Table