Complete Guide to MySQL Database Restore: Methods & Tools

When MySQL Database Recovery is Important?

Users often encounter “MySQL server has gone away”, “Lost connection to MySQL server”, “Table is crashed”, and many more errors. Recovering from them and maintaining the database correctly without losing any critical information is thus necessary for the organization. Some more reasons for MySQL corrupt database recovery are:

• Migration of databases from development to production teams.
• Recovering from all forms of server crashes, MySQL corruption, and so on.
• Rolling the database back to a consistent backup after failed deployments.
• To restore the MySQL databases archived for audit and compliance checks.

Now, how have we helped them here? Find out with the methods below. You can follow the manual tricks for a free getaway, but we suggest the professional tool for absolute outcomes. 

Manual Techniques for MySQL Database Restore 

We will be discussing some common and reliable free methods in this section. As we all know, MySQL is an open-source RDBMS, stores and organizes data in tables that can be easily retrieved. Now, the question is about its recovery, so follow these methods:

Method 1: Command-Line Restore MySQL Database from SQL File

Before following the steps, ensure to fulfill these prerequisites:

• A valid and healthy (.sql) file from mysqldump
• Admin credentials for the MySQL account and 
• Installed MySQL application locally or on the server

Now, proceed with the steps below:

1. Open the Command Prompt terminal on the computer.
2. Then, run the command [mysql -u root -p] to log in to the MySQL account.
3. Next, run the CREATE DATABASE restored_newdb;

EXIT; cmd to generate a new MySQL database.

4. Further, restore the SQL dump with the following command:

mysql -u (username) -p (target db name) < dumpfilename.sql

Note: Use — force in the restore command if you find any minor errors within it to skip problematic queries.

Method 2: MySQL Backup and Restore with phpMyAdmin

This GUI method is ideal for users working with XAMPP, WAMP, or shared hosting servers to run MySQL. Additionally, the method is generally suited to small to medium-sized databases (<100MB). 

The steps for MySQL database restore are:

1. First, launch http://localhost/phpmyadmin/ in any of your browsers.
2. Then, click Databases >> Create Database and create one with a name of your choice.
3. Further, open the new database created, and from More (≡), click Import.
4. Afterward, upload the .sql backup file into it, considering the size limit.
5. Finally, click Go to start restoring the MySQL database from the XAMPP servers.

Method 3: dbForge Studio for MySQL Backup and Restore 

As SSMS works for MS SQL, dbForge is a well-known utility for managing MySQL databases. It allows multiple tasks in one IDE interface and has built-in backup and restore options. 

Identify how to restore MySQL database from backup file step by step with these two parts:

Part 1: Backup

1. Start the dbForge Studio after installation and setup, and connect database.
2. Next, from Database Explorer, click on your db and then on Tasks.
3. Press Backup Database, and in the open wizard, choose db, its path, and name.
4. Further, click Next and select the data to backup in the Backup Content.
5. If needed, proceed with Next for additional configuration and error handling.
6. Otherwise, click Backup to proceed, and when it completes, close the wizard.

Part 2: MySQL Database Restore

7. First, right-click the connection on which to recover and click New Database.
8. Afterward, select your empty new db, right-click it, press Tasks, and choose Restore Database.
9. Then, select your backup file created above and click on Restore >> Finish. 
10. Finally, refresh the Database Explorer to check if the restore is completed.

Method 4: Restore InnoDB MySQL Tables DB from Raw Data Folder

The MySQL Server InnoDB storage engine keeps table schema in .frm files and indexes and data in the .ibd. If the tables are corrupted or deleted, these files help with the recovery. Furthermore, ensure these prerequisites are fulfilled:

• The MySQL server version matches the one where the .ibd file is generated.
• The table must be created with innodb_file_per_table enabled.
• For specific tables, have the exact original .frm and .ibd files.
• Shut down the original MySQL instance or use a test instance for the restore.

The steps to restore a MySQL database from .ibd and .frm files are:

1. First, create a new db with dbForge Studio as done in Method 4 (Restore).
2. Now, create a dummy table with the exact same structure by:

• Right-click the db >> New Object >> Table.
• Enter table name, column names, and data types.
• Click Apply Changes.

3. The new .frm and .ibd files are created as well. 
4. Further, for MySQL database restore, first, discard the newly created tablespace with:

ALTER TABLE dbtablename DISCARD TABLESPACE;

5. The above command also removes the .ibd file, but .frm is intact. 
6. Next, you need to replace the discarded .ibd file with the original one by:

• Go to C:\ProgramData\MySQL\MySQL Server X.X\Data\dbname\
• Paste the original .ibd file here and grant ownership and permissions.

7. Finally, reconnect the table with ALTER TABLE dbtablename IMPORT TABLESPACE; to finish the restoration.

Method 5: Point-in-Time MySQL Database Recovery by Binary Logs 

If the .sql dump is outdated and MySQL (log_bin) has binary logging enabled, then the last transaction before the failure is easy to restore. It is ideal for real-time applications needing granular recovery with minimal data loss.  

Remember the logistics firm above? They used this method for their quick recovery. The steps followed are:

1. Identify and open the last full backup for the MySQL database.
2. After that, extract crucial changes made with mysqlbinlog from the binary log.
3. Lastly, execute only the needed logs by following command:

mysqlbinlog (binarylogfilename) | mysql -u (username) -p

These were some common manual tricks to recover the MySQL database manually. However, these methods are time-consuming, require advanced technical skills, and a lot of effort. Also, there are high chances of errors and data loss in these methods in one way or another. 

Automated Tool for Instant MySQL Database Restore 

When the freeways fail and .frm, .ibd, and .myd MySQL files are heavily corrupted and damaged. The MySQL Recovery Tool is an indispensable solution to restore corrupt MyISAM and InnoDB tables and databases. It doesn’t require original SQL dump files and recovers data in scripts and on a live server while preserving integrity. 

Moreover, it has verified results as stated by the DBA from the product analytics firm. They were able to recover 90% of lost client usage records after a disk crash corrupted InnoDB tables with this excellent tool. 

Restore MySQL database from SQL file with this working:

1. Open the MySQL Database Repair Utility after installation and hit Open.
2. Then, with the (…) icon, add the MySQL db file to it and click OK.
3. Next, press Yes when asked to add the Ibdata1 file and pick it from the PC.
4. Select the tables and press the Save MySQL Data icon from the above.
5. Further, choose where you need to save the receiver data, and at last, tap OK.

Conclusion 

Restoring a MySQL database backup isn’t limited to one solution. It is quite complex, but if you have the right techniques, it gets easy. When working with standard .sql backups, use CLI or phpMyAdmin; for critical cases, use the other ways for deeper control and reliability. But for the best MySQL database restore results and to deal with MySQL file issues, use the professional tool at once.

Frequently Asked Questions

About The Author:

Edwin Stark

Edwin Stark is a Technical Content Writer who specializes in writing about databases, e-mail recovery, and e-mail migration solutions. He loves researching and developing content that helps database administrators, organizations and novices to fix multiple problems.

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