How to retrieve deleted data in mysql

Methods to retrieve deleted data in MySQL include: 1) Binary log recovery; 2) Transaction log file recovery; 3) Rollback table; 4) Third-party tools. The conditions include: binary log or transaction log recording is enabled, and backup is available. To prevent data loss, it is recommended to back up the database regularly.

MySQL method to retrieve deleted data

Get straight to the point:

There are several methods to retrieve deleted data in MySQL:

Detailed expansion:

1. Binary log recovery

• If binary logging is enabled, you can use the MySQLbinlog tool to extract deleted data from the binary log.
• Find the binary log file containing the deletion operation.
• Use the MySQLbinlog tool to extract deleted records.
• Use the import tool to reload the extracted records into the database.

2. Transaction log file recovery

• If transaction logging is enabled, you can use the ib_logfile1 and ib_logfile2 files to recover deleted data.
• Stop the MySQL server.
• Copy the ib_logfile1 and ib_logfile2 files.
• Use the MySQLbinlog tool to extract deleted records from transaction log files.
• Use the import tool to reload the extracted records into the database.

3. Rollback the table

• If you create a backup of the table before the delete operation, you can use the backup to rollback the table.
• Stop the MySQL server.
• Restore the backup of the table.
• Start the MySQL server.

4. Third-party tools

• There are many third-party tools that can help retrieve deleted MySQL data, such as:

  • MySQL Data Recovery
  • DataNumen MySQL Recovery
  • Stellar MySQL Data Recovery

Note :

• The above method will only work if certain conditions are met, such as:

  • Binary logging or transaction logs are enabled Record.
  • Have a backup of deleted data.
• To avoid data loss, it is strongly recommended to back up the database regularly.

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