Removing derived tiles

步骤：

1. Open the service table.
2. Select the derived tiles you want to remove in the service table.

   About selecting rasters in an image service definition

   You can either close the Service table or minimize it.

3. Click the Image Service drop-down menu on the Image Service Definition Editor toolbar and click Advanced > Optimize > Derived Tiles > Remove.
4. Open the service table to confirm that the selected derived tiles records have been removed.