Dear All,
I am planning to upgrade SAP ECC 6.0 Oracle RAC Database from 10.2.0.4 to 11.2.0.3.
Based on "Configuration of SAP NetWeaver for Oracle Grid Infrastructure 11.2.0.2 and Oracle Real Application Clusters 11g Release 2:A Best Practices Guide" white paper, if we plan to use DBUA we MUST reinstall Oracle 10.2 RDBMS and patchsets as user oracle:oinstall (Page-8).
But, from "Prepare the Database Upgrade" section (Page-32), this re-installation is only a recommendation not a mandatory task.
By doing the re-installation, upgrade process will take longer (down time).
I really appreciate if anyone can share the experience in upgrading RAC database using DBUA from 10.2.0.4 to 11.2.0.3 with ora<SID> user without reinstalling 10.2.0.4 RDBMS.
Kind Regards,
Abip