database setup - failed connection

[bx32]

I am unable to move beyond database setup in zen cart install. I uploaded zen cart 1.3.9 to public_html directory and then created a database and linked it to a user that also has been created. For example the database I created is named tiny and the username created is bubba. The home directory is /home/diddy. I mention this because it puts diddy in front of the database name and database username in the cPanel.

I have entered localhost in Database Host field. Are there any other entries I should try? I don't see an IP address in phpmyadmin settings. phpmyadmin displays diddy@localhost for user under MySQL.

I tried to enter bubba or diddy_bubba in the Database Username but neither work.

Obviously the password I created for the Username bubba was entered in the Database Password.

For Database Name I entered zencart, diddy_tiny, or diddy_zencart. None work.

Also, does this mean anything in processes on phpmyadmin? Says database: none.
Show Full Queries ID User Host Database Command Time Status SQL query
Kill 211073 diddy localhost None Query

Linux server.
PHP version 5.2.17
MySQL client version: 5.0.91
Host: HostPC

Please help this tired old fool (me) figure out what is going wrong. Thank you.