Abstract: The traditional methods based on the combination of SCA and OSGi arc not able to support the dynamic， nagement of component modules in the distributed environment at runtime Based on the analysis of the traditional me thods, this paper proposed an OSGi based SCA service model -DOSGi SCA. To support dynamic component module ma- nagement at runtime in the distributed environment, DOSGi-SCA constructs a service registry center to manage local and remote services based on the distributed OSGi. The practical example demonstrates that this model takes advantages of both SCA and OSGi while avoiding their deficiencies.

Key words: SCA，动态管理，组件模型，分布式OSGi,DOSGi SCA