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icon5.gif  Clusterware option for Oracle 10g RAC [message #378954] Sat, 03 January 2009 02:06 Go to next message
chrysonite
Messages: 7
Registered: October 2007
Junior Member
Hi,


I would like to know, can we using Sun Cluster instead of using oracle clusterware as the clusterware for configuring RAC?

Which one is the best for RAC? Is it using the oracle clusterware or using the os vendor clusterware or maybe combining both?

What is the best practices of choosing the clusterware?

Thanks.
H Smile
Re: Clusterware option for Oracle 10g RAC [message #378975 is a reply to message #378954] Sat, 03 January 2009 06:39 Go to previous message
Mahesh Rajendran
Messages: 10672
Registered: March 2002
Location: oracleDocoVille
Senior Member
Account Moderator
>>Which one is the best for RAC?
RAC does not need OS clustering.
If you prefer to cluster OS, it is upto you.
When RAC was first introduced Oracle recommended OS clustering (specifically SunCluster ) to make use of clustered filesystems who do not like raw partitions. We
ran several environments with Oracle 9i RAC clustering on
top of Sun CLusters from 2002 to until 2007 and migrated to 10g clusterware without OS clustering and use ASM.

By choosing OS clustering you are just adding complexity.
This write up accounts for certain features Sun Cluster may offer
with respect to high availability.
Again, you need to install Oracle RAC on top of Sun Cluster anyhow.

http://www.sun.com/blueprints/0105/819-1466.pdf

On other hand,
Oracle RAC claims to be very good at rolling upgrades.
I am not totally agreeing with that.

[Updated on: Sat, 03 January 2009 06:40]

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