Having a corrupted Mysql 5.5.31 (Windows) database, my question relates to the the top solution provided in How do you identify InnoDB table corruption? , more precisely to the following script that is supposed to tell you which tables are corrupted:

for i in $(ls /var/lib/mysql/*/*.ibd)
  innochecksum -v $i

In fact I have two questions: 1) Where do you execute such a script? I thought the scripting shell in MySQL Workbench would to the job by saving this snippet as a Python file and then executing it - however it reports invalid syntax already in the "for ..." line. 2) According to http://dev.mysql.com/doc/refman/5.5/en/innochecksum.html innochecksum is a utility provided by MySQL/Oracle. However, I do not seem to find it in the bin or other folders of my MySQL installation. How do I obtain it?

UPDATE: As I did not trust my own MySQL installation, I downloaded the zip files for both 32 and 64 bit versions of 5.5.31 but can confirm that a innochecksum file is not included.


1 Answer 1



This feels clumsy doing this in Windows but here it goes. If you are able to login to mysql, then run this script

set MYSQL_USER=root
set MYSQL_PASS=rootpassword
set SQLSTMT=SELECT CONCAT('REPAIR TABLE ',table_schema,'.',table_name,';')
set SQLSTMT=%SQLSTMT% FROM information_schema.tables WHERE engine='InnoDB'
echo %SQLSTMT%
mysql %MYSQL_CONN% -ANe"%SQLSTMT%" > C:\windows\InnoDBCheck.sql

After you run this script, add this to my.ini


Then, restart mysql

net stop mysql
met start mysql

during the startup, just after crash recovery, the

Forgive me for such a crude solution since I have very little dealing with MySQL for Windows (that's not sarcasm, I am serious).


Here is something more serious

I just checked my MySQL 5.6.10 no-install ZIP file. It has innochecksum.

C:\>dir \MySQL_5.6.10\bin\i*
 Volume in drive C has no label.
 Volume Serial Number is 2C92-485B

 Directory of C:\MySQL_5.6.10\bin

01/22/2013  07:05 PM         4,065,792 innochecksum.exe
01/22/2013  07:05 PM         3,706,880 innochecksum.pdb
               2 File(s)      7,772,672 bytes
               0 Dir(s)  160,596,770,816 bytes free


Download that ZIP and try running that .

You could then collect all the .ibd files with something like this:

cd "C:\Program Files\MySQL\MySQL 5.5\data"
dir *.ibd /s/b > C:\ibdfiles.bat

You can then edit C:\ibdfiles.bat and prepend innochecksum against every filename.

Sorry this is not a full answer, but at least you can a hold of innochecksum.exe

  • Answer 2 was spot on, thanks. It is a mystery to me why Oracle left this handy little tool out of the 5.5 zip although its in the reference to this version.
    – Steve06
    Commented May 6, 2013 at 23:43

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