Cannot install R12.2.3 upgrade patch adop prepare phase failed
Hello:
I am in process of upgrading R12.2.0 to R12.2.3 following the Oracle E-Business Suite Release 12.2.3 Readme ( Doc ID 1586214.1 ). As per this DOc ID I choose Path B and in process of applying the upgrade patch 17020683, and the issue is the step 2 of this doc "$ adop phase=prepare" got failed and I cannot continue to apply the upgrade patch 17020683.
Basically I need help to resolve the adop phase=prepare FAILED issue to continue the upgrade.
I see these errors in the adop log file and in fact I was able to install all the per-requites patches without any problem and I don't understand why adop phase=prepare complaining about invalid connect string issue. Please take a look and provide your advice to resolve the problem.