Drop/ Alter index if exist

[Pau Marc Munoz Torres <paumarc@xxxxxxxxx>]

Hi every body

 there is some way to delete or rename an index only if this index exists?

something like

"alter index index rename to pepe if exists"

thanks 

-- 
Pau Marc Muñoz Torres

Laboratori de Biologia Computacional   
Institut de  Biotecnologia   i Biomedicina Vicent Villar                                    
Universitat Autonoma de Barcelona
E-08193 Bellaterra (Barcelona)
              
telèfon: 93 5812807
Email : paumarc.munoz@xxxxxxxxxxxxxx