On 11 May 2011 12:26, Yechiel Adar <adar666@xxxxxxxxxxxx> wrote: > Since you did not mentioned RAC: > 1) why do you need three listeners? > You can use 1 listener that listen on three ports. > 2) Why use VIP? > > Yechiel Adar > Israel > It's a company standard. Also, in case of cluster in future, this help the migration process. Also, if I need to detach and reattach DB luns on another server for geographical DR porpuses, this facilitate the process. Ste -- //www.freelists.org/webpage/oracle-l