Oracle rac implementation

[arsidiki]

i have two oracle servers on windows platform and now i want to implement oracle 9i rac but the reason for this is to keep available my identical databases in case of any of two server
failure.

But i m confused that if the shared storage system got failed so what would be the
advantage of implementing oracle rac.

And also another question is that is it possible to build a rac with two machines.


Regards,
arsidiki

[skhanal]

True, if your shared disk subsystem is fried you can't do anything, but shared disk subsystem is usually fault tolerant with redundant power supply, controller and disks configured with RAID.

In a more expensive environment disk subsystem is a SAN, which can handle more individual component failure. So for the database to be really useless many components have to fail at the same time.

You can't build a RAC using two servers without a disk subsystem. In this case you can build stand by database.

[arsidiki]

Dear Skhanal,

I really wanna appreciate your valuable reply and want to add one more question
that if two servers and shared
subsystem is available to me then what are the system and software requirements
that must have to meet for successsful implementation of Oracle 9i RAC.

If u or anyone have any practical experience so please share with me.


Regards

arsidiki.

[skhanal]

For Windows environment you need

2 Windows Advanced Server
Microsoft Cluster Services
Hardware should be in supported list by Microsoft for clustering

You can get more information from
http://www.microsoft.com/windowsserv...g/default.mspx

[ulrikv]

You actually do not need Windows clustering as a RAC implementation is on the Oracle software level. But all the nodes in the cluster must be on the same OS.

Best regards
Ulrik