Requirements for dynamic changes

Requirements for dynamic changes Certain conditions must be met for to be able to load the new classes right away without your having to reboot.

You originally configured database-level class loading for the database correctly. Turning on the database-level class loading property requires setting the derby.database.classpath property with valid two-part names, then rebooting.
If changes to the derby.database.classpath property are needed to reflect new jar files, you change the property to a valid value.

If these requirements are not met, you will have to reboot to see the changes.