RAC One Node 11.2.0.2 questions

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 - 10:21:34 CST