hi, I have worked on Quartz java scheduler in the past. It has good support for JTA and hibernate and spring and jdbc If your applications uses them too. I will customize the scheduler based on requirements for you. Since you have not much divulged about , I need to wait for your response.
There are many job scheduler API like obsidian scheduler which can give you monitoring tool to watch
and control your schedules.
There are other scheduling APIs like Cron4J, jcronTab etc which may suit your requirement. I guess you have already ur your hands on it. Please give me a chance to help you. Pay as you wish.