How to restore mysql database in XAMPP?

Question

I have a backup of the entire xampp/mysql folder. How can I use it to recover my old db on a fresh installation of XAMPP?

Simply copying the old

Answer 1

Continue to andread answer also copy and replace these files to the new xampp folder.

From \xampp\mysql\data\mysql

Files : proc.frm, proc.MAD, proc.MAI

Answer 2

You cannot copy a database folder that has InnoDB tables because InnoDB storage engine maintains a symbiotic relationship between the InnoDB tables' physical files (frm and .ibd) and the data dictionary.

Reference: https://dba.stackexchange.com/questions/82093/moving-binary-database-folder-is-causing-issues-with-innodb-tables

You can try (InnoDB part): https://dba.stackexchange.com/questions/57120/recover-mysql-database-from-data-folder-without-ibdata1-from-ibd-files/57157#57157

Recommendation: It might be late in your case, however, before you move to another server, it is a good idea to export your databases to a sql file and Import it from phpmyadmin, Mysql Workbech, SQLyog or terminal

Export:

mysqldump -u user -p password database_name > database_name.sql

Import

mysql -u user -p password database_name < database_name.sql

Answer 3

To restore your database to XAMPP these are the things you need: -.frm , .ibd files , and ibdata1 can be found in mysql/data folder

Steps

• Install New XAMPP

• Replace ibdata1 in mysql/data

• Copy the folders of the database you want to restore [.frm and .ibd] and paste in mysql/data

• Run the mysql and Viola it works!

If there is an #1932 error occur, just import the create_tables.sql from xampp/phpMyAdmin/sql and this solves the problem.

Answer 4

I got the following logs:

2020-02-11 14:26:06 0 [ERROR] mysqld: Table '.\mysql\db' is marked as crashed and last (automatic?) repair failed 2020-02-11 14:26:06 0 [ERROR] Fatal error: Can't open and lock privilege tables: Table '.\mysql\db' is marked as crashed and last (automatic?) repair failed 2020-02-11 14:26:06 0 [ERROR] Aborting

Well, what I did as follows:

1. Installed a new instance of XAMPP in a different directory (e.g. C:\xampp_new)
2. Copied back the three db files from the new installation to the old one:

• C:\xampp_new\mysql\data\mysql\db.frm to C:\xampp\mysql\data\mysql\db.frm

• C:\xampp_new\mysql\data\mysql\db.MAD to C:\xampp\mysql\data\mysql\db.MAD

• C:\xampp_new\mysql\data\mysql\db.MAI to C:\xampp\mysql\data\mysql\db.MAI

3. Started MySQL service from XAMPP then it worked well.

I hope it could also be useful information for those who steps into an error like this.

Be careful when you are trying to set privileges.