Can MySQL Table Structure Be Recovered Using Only .frm and .ibd Files?

Restore MySQL table structure using only .frm and .ibd files

Question:

If there is no ib_log file, can I restore the structure of the MySQL table using only the .frm and .ibd files?

Answer:

Table structure can be restored from *.frm files. Please follow these steps:

Step 1: Retrieve SQL Create Query

• Install MySQL Utilities and use the mysqlfrm command to extract the SQL query that creates the table.
• Execute command: mysqlfrm --diagnostic <path>/example_table.frm Get SQL query. (please replace <path> with your *.frm file path)

Step 2: Create table

• Create a new table using the retrieved SQL query.

Step 3: Prepare for data recovery

• If old data exists, delete the database and affected tables.
• Remove the connection between the new .frm and .ibd files using the following query: ALTER TABLE example_table DISCARD TABLESPACE;
• Delete existing *.ibd files.

Step 4: Recover Data

• Copy the old *.ibd file into the folder.
• Change its ownership to the mysql user using the following command: chown -R mysql:mysql *.ibd
• Import old data using the following query: ALTER TABLE example_table IMPORT TABLESPACE;

This process will recover table structure and data from .frm and .ibd files.

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