There are four methods for MySQL data recovery: Restoring from backup: the simplest and most reliable, suitable for regular database backups. Use the MySQL recovery tool: suitable for situations where there is no backup or the backup is corrupted. Recovery from binary log: Suitable for binary log records and database corruption. Recover from the audit log: Only applicable to MySQL 8.0 and later versions, the audit log is required to be enabled, and abnormal changes can be recovered based on the audit log.
MySQL database data recovery method
How to recover MySQL database data?
Method:
- Restore from backup
- Use MySQL recovery tool
- Restore from binary log
- Restore from audit log
Detailed instructions:
1. Restore from backup
- This is the simplest and most reliable method.
- If you back up your database regularly, you can restore the data to a specific point in time.
2. Use the MySQL recovery tool
- MySQL provides
mysqldumpandmysqlcommand lines Tools for exporting and importing database data. - Using these tools, you can recover corrupted or accidentally deleted data to another database.
3. Restore from the binary log
- The binary log records all changes made to the database.
- If the database is damaged, you can use the binary log to rebuild the data.
4. Recovering from the audit log
- MySQL 8.0 and later supports the audit log, which records all database activity.
- Based on the audit log, you can determine the history of data changes and recover from unexpected changes.
Choose a recovery method:
The best recovery method depends on your situation:
- Backup recovery: Applicable to situations where there is the latest backup.
- Recovery tool: Suitable for situations where there is no backup or the backup is damaged.
- Binary log recovery: Applicable to situations where there are binary log records and the database is damaged.
- Audit log recovery: Only available for MySQL 8.0 and later databases and requires audit logs to be enabled.
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