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WAMP server. Very large data directory in MySQL?

Posted by: admin November 29, 2017 Leave a comment


I have problem with wammp server.
In directory “..\WampServer\bin\mysql\mysql5.5.8\data” was created files with very large size.
Full size of this directory is 50GB. What is these files? How can I fix this problem?

The names of files are:


The size of all files is 49GB

Thanks in advance!


By default whenever you make a change to a MySQL database it creates a log of the query and stores it in a file simlare to mysql-bin.000001. The MySQL database does this so that you can recover or replicate a database. Most applications this is a good things to have enabled just like doing regular backups.

If you want to disable MySQL from creating these binary logs:

  1. Open my.ini
  2. Search for this line log-bin=mysql-bin
  3. Comment this line out by adding a hash mark: # log-bin=mysql-bin
  4. Save and restart the MySQL database

You can now safely delete these files from that directory.


I did another thing on my wamp…

Start a command prompt and goto directory wamp\bin\mysql\mysql5.5.16 or whatever version number you got


mysql.exe -u root

a list with all the log files will be show up. We need the last one.
In my case was mysql-bin.000412

so i typed

PURGE BINARY LOGS TO 'mysql-bin.000412';

and you are ok!