Oracle default installation question.

Hi,

as per new standards we need to uninstall all unused/unnecessary  components from an default oracle installation,

as a default installation normally these components are installed,

COMP_NAME                                  

--------------------------------------------- ------------------------------

OWB                                          

Oracle Application Express                 

Oracle Enterprise Manager                   

OLAP Catalog                                

Spatial                                     

Oracle Multimedia                     

Oracle XML Database                    

Oracle Text                              

Oracle Expression Filter                

Oracle Rules Manager               

Oracle Workspace Manager           

Oracle Database Catalog Views        

Oracle Database Packages and Types        

JServer JAVA Virtual Machine             

Oracle XDK                                

Oracle Database Java Packages          

OLAP Analytic Workspace               

Oracle OLAP API     

My question is if not used at all what are the components can be uninstalled from this kind of default installation   and how ?