IP Configuration for Oracle RAC
Dear Experts ,
I am managing Single Instance Oracle Database I have Installed Oracle RAC Database. To install RAC, We need to configure Public,Private and Virtual IPs for both nodes. I am NOT using DNS setup. IS it mandatory or highly recommended to configure different classes for Public and Private IP ? >> IS this perfectly OK or Any changes are required ? PHP Code:
Especially Question for Public and Private IPs setting for Oracle RAC Database ? |
Quote:
https://www.linuxquestions.org/quest...on-4175617321/ Again, as an Oracle DBA, you should be very familiar with how to configure/set up Oracle RAC. As you've also been told before, Oracle RAC is not a free product, and since you're using it (as an Oracle DBA), you are paying for it..have you contacted support, or read the Oracle documentation on their best-practices? http://www.oracle.com/technetwork/ar...si-088677.html https://docs.oracle.com/cd/B28359_01...c.htm#TDPRC003 |
When we set it up here we had the PUBLIC (individual node physical IPs), the VIPs and the SCAN IPs all in the same network (VLAN). Only the Private (interconnect IPs) were in a separate network.
The VIPs and SCAN IPs are virtual IPs that can float from one node to another so it is best to have them in the same VLAN as the nodes' main IPs. In a two node setup you would typically have one VIP on each node then 2 scan IPs on one node and the 3rd scan IP on the other node. In a failover the VIP and SCAN IPs on the node that went down will come up on the node that is still up so you'd end up with both VIPs and all 3 SCAN IPs on a single node and until you did fail back. |
Hi
But my question is, 1) If i assign all IPs from same network,then any problem ? 2) Why do we need to specify different network for Private IP ? >> On both nodes i assigned same network , but same time RAC configuration done - NO Problem. PHP Code:
PHP Code:
|
Quote:
|
Quote:
Also just to note on the scan IPs - I'm not sure you can do those without DNS. The idea of scan IPs is that you tell any application that needs to reach the database the scan name and on doing lookup they will see the 3 IPs (in a 2 node setup) you assigned to scan and use any one of those. This is why the IPs failover when a node goes down. From other servers do NOT point to your database via the VIP or Public (or Private which shouldn't be possible). Only point to it via the scan name. This insures things pointing to the database continue to work in failover. Setting up RAC/GRID is non-trivial so you really do need to review the documentation before you start. |
All times are GMT -5. The time now is 10:39 AM. |