To help diagnose the issue please provide the following information:
What is your cPanel&WHM version?
What MySQL version is installed?
Are you using a remote MySQL server? If yes, what is the MySQL version on the remote server?
Is database prefixing disabled?
Are any messages logged to the cPanel error_log when accessing the specified area in WHM? Via root SSH access, the following command can be used to monitor the cPanel error_log for new messages: