RE: Shared Disk Oracle RAC

From: Sanjay Mishra <smishra_97_at_yahoo.com>
Date: Thu, 14 Sep 2006 14:23:09 -0700 (PDT)
Message-ID: <20060914212309.44143.qmail@web51301.mail.yahoo.com>

Bryan

Thanks for the Link. My configuration is exactly like it where both Dell server are attached to the EMC through Fiber Channel. Each Dell server has two HBA [ Second for failover]. I check the docuement refer by Site and can see all partition on Server 1 but it is not visible on Server 2 in /proc/partitions

If we shutdown the server 1, then all partition are visible on Server2 as per Sysadmin. I didn't check it byt sysadmin says that it is because of EMC powerpath.

Any other side that shoudl be check or suggestion TIA
Sanjay

Bryan Thomas <bthomas_at_perftuning.com> wrote:

        v\:* {behavior:url(#default#VML);}  o\:* {behavior:url(#default#VML);}  w\:* {behavior:url(#default#VML);}  .shape {behavior:url(#default#VML);}        st1\:*{behavior:url(#default#ieooui) }                Sanjay,

It simply is a matter of putting both servers in one EMC Storage Group. You will need to create a storage group with both servers and the LUN’s hat must be shared.

If you are using switches, you must make sure they are zoned properly too.

Here is a link to a Dell area that specifically covers the requirements for Oracle RAC on EMC.

http://dell.com/10g

Thanks,
Bryan

From: oracle-l-bounce_at_freelists.org [mailto:oracle-l-bounce_at_freelists.org] On Behalf Of Sanjay Mishra Sent: Thursday, September 14, 2006 2:44 PM To: oracle-l_at_freelists.org
Subject: Shared Disk Oracle RAC

I am working on Installing Oracle Clusterware software so that we can replace the Veritas Clusters which is used for three applications. In the current setup of Veritas Clusters, One of the Server is ACTIVE and so all Disk are mounted on Active server. So if it failed to Offline server, all Veritas Resource like Disk as well Oracle instance are mounted and started on second server and it become active. Anyway this is the existing approach.

Now I had to install Oracle clusterware which need shared storage to create OCR/Voting files and our Sysadmin has provided a QA environment where two Linuz server are present and they are attached the HBA to the Shared EMC storage. Storage is avaialble only on one server and one sysadmin says that it is not possible to provide the shared storage on both server so that both can write to each other. One of them says that it is possible but this is some EMC configuration and so it has to go to EMC support. I am not sysadmin and so can somebody give me some idea so that I can check with them. Sysadmin says that if we stop the one of the server, then the space will be automatically visible on other server but not the same time. Is there way I can tell them to check some information in the configuration.

TIA Sanjay

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Received on Thu Sep 14 2006 - 16:23:09 CDT