For one thing, it allows us to turn off access to one instance at a time for maintenance, for example. It allows us to assign a different port to each instance. There are many advantages. On Jan 10, 2008 12:12 PM, David Sharples <davidsharples@xxxxxxxxx> wrote: > why do you require a listener per instance? > > > On 10/01/2008, Andrew Kerber <andrew.kerber@xxxxxxxxx> wrote: > > > > One listener per instance is what I use. > > > > On Jan 10, 2008 10:52 AM, Li Li <litanli@xxxxxxxxx> wrote: > > > > > Hi, List, > > > > > > I'd like to hear your input on how many listeners to run in a RAC > > > environment that will host 4 RAC databases. It'll be Oracle 10.2.0.3 > > > on RHEL 4 (all 64-bit). I am leaning to run just 1 listener, what is > > > your thoughts on this? > > > > > > -- Andrew W. Kerber 'If at first you dont succeed, dont take up skydiving.'