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Oracle 11gR2 RAC on Unix [message #518999]

Mon, 08 August 2011 14:06

caprikar
Messages: 226
Registered: March 2007

Senior Member

Hi,
I'm trying to install Oracle 11gR2 RAC on AIX, do we need to turn on Multicasting, can we install without multicasting? Also can I have the ASM disk with external redundancy for OCR and Voting Disk?
Thanks.

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Re: Oracle 11gR2 RAC on Unix [message #519005 is a reply to message #518999]

Mon, 08 August 2011 19:38

Mahesh Rajendran
Messages: 10708
Registered: March 2002
Location: oracleDocoVille

Senior Member
Account Moderator

>>do we need to turn on Multicasting, can we install without multicasting?
http://download.oracle.com/docs/cd/E11882_01/install.112/e17210/preaix.htm#BABDJDJJ

>>can I have the ASM disk with external redundancy for OCR and Voting Disk?
Yes. As long as you are properly protected by "external means" (SAN mirror/raid for example).

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Re: Oracle 11gR2 RAC on Unix [message #519112 is a reply to message #519005]

Tue, 09 August 2011 08:21

caprikar
Messages: 226
Registered: March 2007

Senior Member

Thanks Mahesh, how many copies of OCR/Voting devices oracle recommends? what is the best practice?
Thanks,
-Karthik

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Re: Oracle 11gR2 RAC on Unix [message #519113 is a reply to message #519112]

Tue, 09 August 2011 08:39

Mahesh Rajendran
Messages: 10708
Registered: March 2002
Location: oracleDocoVille

Senior Member
Account Moderator

http://download.oracle.com/docs/cd/E11882_01/install.112/e17214/chklist.htm#CHDBCHBC
Quote:

If you do not have a storage option that provides external file redundancy, then you must configure at least three voting disk areas to provide voting disk redundancy.

http://download.oracle.com/docs/cd/E11882_01/rac.112/e16794/votocr.htm#sthref154

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