RAC 11.2: VIP on different subnet?

Question

Hi all,
i searched over the 11.2 docs, but I can't find anything.
It seems to me that the previous restriction on having vips on the same subnet ad interface of the rac's "public" one is gone in 11.2
When trying to add a rac listener I get a list of defined subnet.
Anyone have tried to add a listener on a subnet different than the public one?
PS:
I think it's related to the new "listener_networks" initialization parameter... I'm trying to understand the meaning of this parameter in a rac env.
Regards,
Roberto
Edited by: user627529 on Oct 12, 2009 6:11 AM

Answer 1

user627529 wrote:
I host a database which client are on different network.
Eg: one rac database is on the private (not in rac terminology, but "internal") network, and another database hosted on the cluster had to be accessed from another, public network (firewalled).
I have 3 options at this point
1) oracle conn. gw
2) nat from fw (which is the current cfg)
3) define another subnet on the rac and create listener on them, registering the db with the second listenerWould also have used the 2 ^nd^ option - not too comfortable with the idea of having a node directly wired to a public network, despite firewalls. I would want that to be DMZ'ed and access "proxied" from the public network to the server node using NAT...
Also.. why direct database access? Usually in such a case (from a public network) access will be via a web based application. In which case you can reverse proxy the public web calls to an Oracle Apache server and have it connect to the server node.