Specifying the Default Perspective
  The default perspective is indicated in the  Open Perspective dialog (accessible via the
  Window > Perspective > Open Perspective > Other... menu). The pre-defined default perspective is
  indicated by the word default in brackets following the perspective name, for example, Resource
  (default).
 Open Perspective dialog (accessible via the
  Window > Perspective > Open Perspective > Other... menu). The pre-defined default perspective is
  indicated by the word default in brackets following the perspective name, for example, Resource
  (default).
  To change the default perspective:
  
    - Open the 
     General > Perspectives
    preference page. General > Perspectives
    preference page.
- Select the perspective that you want to define as the default from the list of available perspectives, and
    click Make Default. The default indicator moves to the perspective that you selected.
- Click OK.
Workbench
  Perspectives
  Opening perspectives
  Changing where perspectives open
  Showing and hiding menu items and toolbar buttons
  Configuring perspective command groups
  Configuring perspective shortcuts