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For more information see Backing up a derby database.
The quartz jobs
The quartz jobs are essential for the running of SakaiAdminX. They are easily installed and often need no extra settings to be made at all (unless your roles/users in Sakai differ vastly from a normal Sakai environment). That being said, its still very easy to configure them.
Please see the Quartz jobs section of the Installation Guide for detailed information.