Multiple RAC databases on IM even using different subnets for Public i / face

Hello. We are setting up a 2 cluster nodes. This group will be the host of several RAC databases. For security reasons, our network team want to create separate subnets for the application traffic to each RAC specific database on the cluster.

For example, request 1 to 2 application servers that will connects to database PROD1 RAC via a single subnet, application 2-3 application servers etc which will be connected to the database RAC PROD2 via a different subnet,.

In addition, the network team want to configure a subnet separate management DBA etc. will use to administer all the RAC databases and infrastructure in the cluster.

Version 11.2.0.2 grid infrastructure. The database versions vary from 10.2.0.x to 11.2.0.2. All databases will use RAC.

We want to take advantage of the features of earphone SCAN to support connectivity to databases on the cluster. 2199620 [https://cn.forums.oracle.com/forums/thread.jspa?threadID=2199620] thread suggests that 11 GR 2 supports several subnets, that seems to be exactly the functionality we need. Please can you confirm how it works and tell us any documentation (standard docs, whitepapers, MOS, etc.) which could help us to configure it.

Document referenced in thread 2199620 was not exactly what we were looking for and didn't translate too well in Google Translate.

Any guidance is appreciated. Thanks, Rich.

Similar topics:

https://CN.forums.Oracle.com/forums/thread.jspa?MessageID=9846298? (Double SCAN on multi cluster hosted)
https://CN.forums.Oracle.com/forums/thread.jspa?threadID=2199620 (scan earphone in VLAN OAM)

Published by: 887449 on 26-Sep-2011 01:41

Hello

With Oracle 11.2, you can have multiple public networks accessing your Oracle RAC.
You must set the init.ora new LISTENER_NETWORKS setting so users are load-balanced on their network. Services are related to the networks so users who connect with network 1 will use a different service as network 2. Each network will have its own VIP.

Impossible to use both network SCAN function because SCAN will work into a single network and on GRID 11.2 you cannot config more than a SCAN.

So, you can have a public network (for example, 10.10.10.0) with SCAN/VIP and another public network (e.g. 192.168.217.0) you will only use VIP on TNSNAMES.ora.

You configure a Service (A) on the network (10.10.10.0) and one other Service (B) on the network (192.168.217.0).

In the example above using (A) Service you will configure SCAN (scan host) and using Service (B), you must configure all address VIP.

Kind regards
Levi Pereira

Published by: Levi Pereira Sep 26, 2011 18:03

Tags: Database

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