Does the tool require any additional files to run the Scheduler?
We often use the scheduler function in JasperETL successfully. If you use the scheduler in JasperETL, when you export your jobs you will get a crontab that can be used with Cron. Cron is built into Linux and Unix, and you can use a program like cronw if you are running on Windows.
The best method to schedule reports creating in iReport is to use JasperServer, which has a built in scheduler for scheduling JasperReports. I recommend downloading JasperServer 2.0.1 at http://www.jasperforge.org/index.php?option=com_content&task=section&id=... .
We have more than 20 ETL jobs and it has been scheduled to run uisng crontab.
It works fine only when the jobs are open in the window else it won't. So it requires us to open all the jobs due to this our server CPU usage shoot upto 100%. My question is
1. Why ETL jobs didn't get invoked through crontab when it is closed.
2. Why CPU usage shoot upto 100% when we try to open all the jobs.