Can you give more details ?
What is the output ? Blank page ? Nothing ?
If you change the log settings to debug / trace do you get more information ?
Have you looked at every log ? JBoss boot.log and server.log ?
In the logs of ubuntu, are there any reported errors ?
Did you configure your MySQL with the same accounts, the same privileges ? In your database configuration did you change your accont information ?
Does the MySQL driver have known issues in Ubuntu ?
By the way ... how do you like Ubuntu ?
server.log doesn't have any errors.
and i have filter that if not authenticate then force to login page
when i login that force to login page but in fedoracore 3 it can login and get otherpage. MySQL database is work OK grant all priviliges to users.
i think fedora core is not up to date and hard to maintainance then i try another that is ubuntu but still have problem.