General :: Which Files Are Taking Space To Make The Partition 68% Used

I have some confusion about one of my partition and the space it is taking. df -h output is given below;

# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/ddf1_ADVDTARTINGp1
494G 18G 452G 4% /

[code]....

above information is showing that /var/lib/mysql partition total size is 379 GB and it is 68% used. However when I execute command du -sh /var/lib/mysql it shows following output.

# du -sh /var/lib/mysql
45G /var/lib/mysql

Now I want to know what files are taking space to make the partition 68% used. I want to list down all files in that partition with size.