RE: RAC One Node 11.2.0.2 questions

I think the software is the same. You also have a software only option. And only at the end of this installation, you need to indicate if you are want a "regular" rac or a rac one node (oracle restart) by choosing between 2 scripts (when running the root script).

There are some bugs related to directory privileges when you install the clusterware and the db software as 2 different users (case open with oracle for this).

Also, I think there is a bug that disallows you to register new databases with the cluster layer when the os owner for that oracle home did not yet exists since the last clusterware startup (and there is already a database registered). But I still have to investigate this one to confirm.

Regards,  

Freek D'Hooge
Uptime
Oracle Database Administrator
email: freek.dhooge_at_uptime.be
tel +32(0)3 451 23 82
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-----Original Message-----

From: oracle-l-bounce_at_freelists.org [mailto:oracle-l-bounce_at_freelists.org] On Behalf Of Li Li Sent: woensdag 23 februari 2011 17:22
To: oracle-l
Subject: RAC One Node 11.2.0.2 questions

Hi, List,

I am playing with RAC One Node 11.2.0.2 on a 2-node cluster and have some questions and wonder if anyone on the list have played with it?

1. When installing RDBMS, you have choices of installing a regular RAC or a RAC One Node, I installed both and both ORACLE_HOME seem to be about the same size. I am wondering what the difference is between this 2 installation types?
2. I created 2 admin-managed RAC One Node databases, one using dbca from the regular RAC ORACLE_HOME, the other using dbca from the RAC One Node ORACLE_HOME. I don't see any difference between this 2 databases. I was able to run "srvctl relocate database -d xxx -n xxx" to relocate the databases back and forth on the 2 nodes. One interesting observation: if you relocate a database from node 1 to node 2, say DB with instance DB_1 running on node 1, the instance name changes to DB_2 on node 2; however, if you just reboot node 1 directly, the DB fails over to node 2 but the instance name remains as DB_1.

Guess my questions are: why provide a RAC One Node RDBMS installation type since the dbca from a regular RAC installation can also create RAC One Node databases? Anyone use RAC One Node? How is your experience with it? I feel RAC One Node could be a good candidate for ERP non-production environments as these environments need certain HA but don't really need the RAC resource that production environment needs.

Thanks in advance,
-Li
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http://www.freelists.org/webpage/oracle-l Received on Wed Feb 23 2011 - 10:48:39 CST