Re: Oracle RAC VIP networking question

keithdew_at_comcast.net wrote:
> Thank you for the URL. Understood for no cluster VIP. When you
> say RAC provides a VIP for "every" node in the cluster, does that mean
> if I have 3 servers (nodes) in the cluster, each server has a VIP
> (that is, a different virtual IP address) that is primary and it's up
> to the system admin to say what applications in the cluster listen on
> what VIP's? Then depending on the type of failure, I assume that
> VIP "floats" to the node that has the next highest priority.
>
> I'll forward this URL to our Unix admins.
> Thanks
> Keith
>

Each node will have its own VIP. The DBA will set up a TNSNAMES.ORA config file which defines the services the app uses. These TNS entries should use the VIP. Should a node go down, Cluster Ready Services will fail over the node to one that is still running. If your TNS entries do not use the VIP, this failover will take a long time due to waiting for TCP/IP timeouts.

HTH,
Brian

-- 
===================================================================

Brian Peasland
dba_at_nospam.peasland.net
http://www.peasland.net

Remove the "nospam." from the email address to email me.


"I can give it to you cheap, quick, and good.
Now pick two out of the three" - Unknown

-- 
Posted via a free Usenet account from http://www.teranews.com