Upgrade 10gR2 RAC to 11gR2 RAC on RHEL Server !!!

In this article we will see how to upgrade Oracle Clusterware, ASM and Database from 10gR2 [10.2.0.5] RAC to 11gR2 [11.2.0.3] RAC. The current 10gR2 RAC database configuration is as below, • OS: RHEL 5.8 • Oracle User: oracle • Grid User: grid • Oracle Home: /u01/app/oracle/products/10.2.0/db • Grid Home:…