If you use a multi-file disk store, then the realm configuration properties for auto-maintenance have no effect, since these properties are only used if you are using a single-file disk store. Also, if you manually start the "perform maintenance" operation on a multi-file disk store, this will not have any effect on the store. (The "perform maintenance" operation is available in the Enterprise Manager when you select a channel or queue, then right-click to display the context menu.)

If you use a single-file disk store, then the auto-maintenance properties will apply.

See the description of the auto-maintenance properties in the configuration group "Event Storage" in the section Realm Configuration of the Administration Guide.

The manual "perform maintenance" operation can only be used to clean up single-file disk stores, not multi-file disk stores.