You can restore a deleted MySQL table through the following steps: use binlog recovery (applicable to the case where binary logging is enabled and the deleted transaction is not overwritten); use MySQL backup recovery (applicable to the case of regular backup); Restore using file system snapshots (applicable if the database file system supports snapshots).
How to Recover a Deleted MySQL Table
When you accidentally delete an important MySQL table, you don’t have to panic. Lost data can be recovered through the following steps:
Method 1: Use binlog recovery
Prerequisite: Binary logging is enabled and transactions that have not overwritten the deleted table have not been overwritten.
- Check your binary log files for table delete events.
- Extract log files containing deletion events.
- Use the
mysqlbinlogcommand to dump the log file into SQL statements. - Run the dumped SQL statements to recreate the deleted table and its data.
Method 2: Using MySQL Backup
If you take regular backups, you can restore deleted tables from backups:
- Determine the backup file to be restored.
- Use the
mysqlcommand to restore the backup file to a new or existing database. - Locate the recovered table in the new database and extract data from it.
- Insert the extracted data into a copy of the deleted table in the original database.
Method 3: Using file system snapshots
If your database file system supports snapshots, you can do the following:
- Restore the snapshot of the database file system back to the point in time before the table was deleted.
- Restart the MySQL server.
- Deleted tables will reappear.
Note:
- The availability of these methods depends on the MySQL version and configuration.
- Always back up your database regularly to prevent data loss.
- Be sure to back up your existing database before attempting to restore a table.
- If these methods do not restore your table, you may need to contact MySQL technical support.
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