WAMP data folder contains large mysql-bn.xxxxxx files
These files are logs from MySQL queries. To clear them, do the following Go to your mysql bin folder (ex C:\wamp\bin\mysql\mysqlx.x..xx\bin) Run mysql.exe -u root -p enter the password Run this command: SHOW BINARY LOGS; look for the last entry Run this command: PURGE BINARY LOGS TO 'mysql-bin.xxxxx' Where mysql-bin.xxxxx is the filename of the last entry. Done!