We are creating a physical.

This is the setup from our sys admin we have 2 options on how to configure
it. OR is this wrong?

Option1:
We use eth0 for incoming database connection and other stuff like ssh
etc and we dedicate eth1 for the dataguard heartbeat only.
We achieve this by binding the public IP to eth0 (the 43.x.x.x) and a
private IP (192.168.0.x) to eth1. Then we plug in a crossover cable
from eth1 on primary server directly to eth1 on standby server

Advantage:
1. We have a dedicated low-latency link for the datguard heartbeat (as
low latency as it can get !)
2. We have a full gigi pipe for incoming db connections and a seperate
full gigi pipe for the heartbeat.

Disadvantage:
1. We have no failover for either links.
2. We need to tell dataguard about the private IP's.

*******
Option 2:

We bond eth0 and eth1 and set the ip on a virtual interface called
bond0. Eth0 will become the active interface and eth1 the passive one.
Eth1 takes over in case eth0 gets unplugged or shutdown.

Advantage:
1. We only have 1 IP for each node.
2. We have full redundancy for both the incoming db connections as well
as for the dataguard connection.

Disadvantage:
1. The dataguard heartbeat link is NOT low latency since it goes all the
way through the network and back.
2. ALL traffic is shared by one gigi link.




"caffeine-addict"
<oracledba-ezmlms
hield-x2471071.x1 To
[Email Address Removed] "LazyDBA Discussion"
.com> <[Email address protected]
cc
09/04/2007 09:53
PM Subject
Re: Dataguard Configuration










Are you establishing a logical or physical standby? Also what does 4 ips
stand for?


LS

"640KB ought to be enough for anybody." - Bill Gates, 1981



----- Original Message ----
From: Diane_Fukuhara <oracledba-ezmlmshield-x73942913.[Email address
protected]
To: LazyDBA Discussion <[Email address protected]
Sent: Tuesday, September 4, 2007 9:12:05 AM
Subject: Dataguard Configuration


Hi All,

Looking to configure Dataguard with my 10.2.0.3 database. I read for
performance it's a good idea to have a low latency network, so I have a
direct connect between the 2 servers and I won't have the bottleneck.
However, he says that I would then have to have 4 ips. Has anyone
configured DG this way, and if so how do you go about it. Or, is this
route unecessary. Any suggestions or feedback from experience would be
greatly appreciated.

Thanks,
Diane Fukuhara
Oracle DBA




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