Recently we announced MySQL Data Recovery Portal. Here we automated some data recovery routines and published web interface to them.

First, it was a tool to estimate recovery chances from corrupted InnoDB tablespaces.

Now it’s even more exciting and useful feature – recovery table structure from FRM files online.

There are several methods to recover MySQL table structure from FRM files.

On MySQL Data Recovery Portal we utilize a combination of them.

Fake table method

The idea is to create a dummy InnoDB table, replace its .frm file with .frm file we want to recover and run SHOW CREATE TABLE.

Let’s say we have actor.frm and we want to get structure of table actor.

Algorithm is following:

Create a dummy table with the same name, actor. The …