This Document shows the step by step of upgrading E-Business Suites R 12.1.1 Database from 11gR1 RAC to 11gR2 RAC on 3-node database cluster. Below upgrade path was followed (in sequence) to achieve the final goal successfully.
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Please visit the below URL for the Complete and Detailed information on this Upgrade.
http://www.oracledba.org/EBS/upgrade/Upgrade_11gR1_RAC_EBS_R12_Database_to_11gR2_RAC.htm
Thanks,
Bhavin
