Programming Open Service Gateways with Java Embedded Server™ Technology

10.1. Removing Phantom Bundles

Earlier we learned that the exported packages remain in effect even when the exporting bundle has been updated, stopped, or uninstalled. Although this behavior is deterministic, it does leave behind “zombies”—inaccessible bundles that consume valuable resources. The following user session reveals this situation:

> start jes_path/bundles/log.jar, jes_path/bundles/device.jar
> bundles
ID  STATE   LOCATION
--  ------  ----------------------------
0   ACTIVE  System Bundle
1   ACTIVE  file:jes_path/bundles/log.jar
2   ACTIVE  file:jes_path/bundles/device.jar
> exportedpackages
Package: org.osgi.service.device (0.0.0)
  Exported by: 2 (file:jes_path/bundles/device.jar)
  Imported by: 2 (file:jes_path/bundles/device.jar) Package: org.osgi.service.log ...