RE: RAC Directory Structure

Date: Thu, 22 Dec 2011 05:51:33 +0000
Message-ID: <>

Steve- the one thing I would recommend is to make the CRS and ASM homes the same, rather than a total 3 different homes. We have built numerous systems both ways, and the 2-home version is easier to manage. I can see if you want to separate out any ASM responsibilities from DB, but I think the vast majority of customers have one DBA technical role for managing the entire system.

The second thing I would recommend is to use Unix rather than Windows for RAC :)

-----Original Message-----

From: [] On Behalf Of Uzzell, Stephan Sent: Wednesday, December 21, 2011 11:04 AM To: ''
Subject: RAC Directory Structure

Morning, all,
We're slowly starting to work with for more of our environments, and learning some of the tricks and gotchas with it.

One question that we have not found a logical answer for is handling the directory structure (we're on Windows, but I suspect this is broader than a Windows question). In our 10g installs, we aimed for a very simple directory structure for our three Oracle Homes:

D:\oracle\admin\... for the ASM and DB dump destinations.

11g has changed things by a) adding the ORACLE_BASE as something we need to explicitly define; and b) the out-of-place upgrades. The out-of-place upgrades are not too much trouble - we'll simply change the directory name from D:\oracle\11201\... to D:\oracle\11202\... and so on.

The Oracle Base, however, is something we're struggling to find a best practice for. For the Grid Infrastructure, the recommendation (and OUI very strongly suggests this) is to put the ORACLE_HOME outside of the ORACLE_BASE; for the Database, the Home should be within the Base.

How do people handle this? Can the two Oracle Bases be the same?

Any advice on this would be appreciated... stephan

Stephan Uzzell


-- Received on Wed Dec 21 2011 - 23:51:33 CST

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