RE: RAC One Node 11.2.0.2 questions
- From: D'Hooge Freek <Freek.DHooge@xxxxxxxxx>
- To: "litanli@xxxxxxxxx" <litanli@xxxxxxxxx>, oracle-l <Oracle-L@xxxxxxxxxxxxx>
- Date: Wed, 23 Feb 2011 17:48:39 +0100
Li,
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@xxxxxxxxx
tel +32(0)3 451 23 82
http://www.uptime.be
disclaimer: www.uptime.be/disclaimer
-----Original Message-----
From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] 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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