MySQL 1402

This error occurs when a rollback is requested for an XA transaction that has already been committed. It is a MySQL 1402 error code.

How It Affects Your App

MySQL 1402 ER_XA_RBROLLBACK indicates that an XA transaction has been rolled back due to an error. This can have a significant impact on an application, as it can cause data inconsistency and data loss. It can also lead to application downtime, as the application may need to be restarted in order to recover from the error. Furthermore, it can lead to a decrease in user trust, as users may be unable to access their data or may experience data loss.

How To Fix

1. Check the error log for the MySQL 1402 error. This can be done by running the following command:
mysql> SHOW GLOBAL VARIABLES LIKE 'log_error';
2. Check the user privileges for the user that is trying to access the database. This can be done by running the following command:
mysql> SELECT USER, HOST FROM mysql.user;
3. Check the database permissions for the user that is trying to access the database. This can be done by running the following command:
mysql> SHOW GRANTS FOR 'username'@'hostname';
4. If the user does not have the correct privileges, grant the necessary privileges to the user. This can be done by running the following command:
mysql> GRANT ALL PRIVILEGES ON database_name.* TO 'username'@'hostname';
5. Flush the privileges to make sure the changes take effect. This can be done by running the following command:
mysql> FLUSH PRIVILEGES;
6. Restart the MySQL server. This can be done by running the following command:
sudo service mysql restart
7. Use an automated database observability tool to monitor and fix the MySQL 1402 in question. This tool can help identify the root cause of the issue and provide recommendations on how to fix it. It can also help monitor the performance of the database and alert when any issues arise.

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