What is

MySQL 1180: Read-only transaction violation.

 ?
  1. Identify the transaction causing the error by reviewing recent application logs or MySQL error logs. Look for any transactions that were attempted but failed due to the read-only restriction.



  1. Check the current transaction isolation level by executing the following SQL command:


SHOW VARIABLES LIKE 'transaction_isolation';
If it's set to a level that does not support writing, you may need to adjust it based on your application requirements.

  1. Verify the read-only status of your MySQL instance by running:


SHOW VARIABLES LIKE 'read_only';
If the value is `ON`, and your application needs to write to the database, you may need to turn it off with:
SET GLOBAL read_only = OFF;
Note: Ensure you have the necessary permissions to change this variable.

  1. Check if you are connected to a replica that is set to read-only mode. Replicas are often set to read-only to prevent accidental writes. If your application needs to write data, ensure it's connected to the primary database.



  1. If you are using managed MySQL services (like AWS RDS, Google Cloud SQL, etc.), check the database configuration in the service's console for any read-only settings or permissions that might be affecting your transactions.



  1. Review the database user's permissions to ensure they have write access if the transaction is supposed to modify data:


SHOW GRANTS FOR 'youruser'@'yourhost';
Replace `'youruser'@'yourhost'` with the actual username and host you're connecting from.

Each of these actions is aimed at identifying and rectifying the immediate cause of the "1180: Read-only transaction violation" error in MySQL.

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