OPMN start error in Oracle EBS 12.2 Installation after ETCC FMW patches

 Issue :

opmn: unexpected exit: status 4200 opmnctl start: opmn failed to start

Issue Resolution :

Prerequisite Steps to Configure Oracle Fusion Middleware 11.1.1.9 Components for Oracle E-Business Suite Release 12.2 Before Applying July 2019 or Later FMW OSS Security Patch (Doc ID 2555355.1)