cPanel error mysql database size 0 MB

You may see the mysql database size as zero in cPanel >> ‘Mysql Databases’ option, though the databases contains tables and data. In order to include the size of the databases while displaying disk usage in cPanel/WHM, perform either of the following steps:

1.  SSH to your server as root and edit the cpanel.config file

 # vi /var/cpanel/cpanel.config

Search for
disk_usage_include_sqldbs=0

and change to
disk_usage_include_sqldbs=1

If the parameter is not present, add it. Save the file and execute the following command:
# /scripts/update_db_cache

OR

2. Login to the WHM, goto Tweak Settings >> ‘SQL’ section and enable the following option:
When displaying disk usage in cpanel/WHM include Postgresql and MySQL.