Hai All.
Our Current Version is 10g R2 (10.2.0.2). But, we want to have our final version as 10.2.0.3. But, any how I would like to know whether the following steps are correct:

1) Install Oracle Clusterware 10.2.0.1 in the new CRS ORACLE_HOME using
the same oraInventory location as the existing 10.2.0.2 ORACLE_HOME.
2) Install Oracle 10.2.0.1 RAC Software using the same oraInventory location
in the above step.
3) Install Database Components from Oracle 10g 10.2.0.1 Companion CD.
4) Upgrade Oracle Clusterware Software from 10.2.0.1 to 10.2.0.3
5) Upgrade Oracle RAC Software from 10.2.0.1 to 10.2.0.3
6) Upgrade the existing 10.2.0.2 (Old ORACLE_HOME) Single Instance
Database to 10.2.0.3 using DBUA from the newly installed 10.2.0.3
ORACLE_HOME.
7) Use rconfig/DBCA to convert the Database to RAC Database.
8) Post RAC Migration Steps.


regards,
Dileep Tallam.