From the JSS Manual Install Guide - http://resources.jamfsoftware.com/documents/products/documentation/Manually-Installing-the-JAMF-Software-Server-v8.5-or-Later.pdf
Have you:
1) Created the DB? (Command - CREATE DATABASE jamfsoftware;)
2) Gave the user jamfsoftware access to the DB? (Command - GRANT ALL ON jamfsoftware.* TO jamfsoftware@localhost IDENTIFIED
BY 'jamfsw03';)
These should both be done at the MYSQL command line.
