On single Instance we have Upgraded 10gr2 to 11gr2. Upgradation went well but on this database there was PI (Process Integration) system is present and performance on this portal has comes down which is SAP application.
Application team pointing us that becoz of 11gR2 upgrade performance come down Our higher management instructed us to find out whether it is a Oracle database problem or SAP application issue.
Kindly share your views here.
Thanks in advance.