Re: Oracle RAC and VIPs

The basic gist is this:
  The VIP is a cluster resource managed by the clusterware. Depending on your OS , you can see it running as a VIP under your public network NIC. (ifconfig -a on Linux). What happens in a node failure is that the clusterware brings that VIP resource up on another node so that when clients attempt connects to that IP, the 'failure' is detected right away and the client can use the next address in the tnsnames.ora entry (or jdbc url, or whatever).

Try it out sometime. take a node node, use srvctl to see where the vips are running and look at the ifconfig to see as well.

On Thu, Jul 10, 2008 at 8:30 AM, Dba DBA <oracledbaquestions_at_gmail.com> wrote:

> I have installed Rac. I know how to create a VIP. I don't understand why
> this works. I also don't undertsand why TAF works.
>
> I am connected to node 1, how am I on the fly connected to node 2 if node 1
> goes down.
>
> Again, I know the functionality, I just don't know how it works under the
> covers.
>
> Can anyone help me out with this?
>

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