R12.1.3 opmnctl services failed with Error code : 204 in a new setup

Error :

Cause : Missing a mandatory RPM and symbolic links to the generated lib file.

Solution:

1. Install the rpm : libdb-5.3.21-25.el7.i686
2. create the below symbolic links as root :
   ln -s  /usr/lib/libdb-5.3.so  /usr/lib/libdb-4.3.so
   
   ln -s  /lib/libdb-5.3.so  /lib/libdb-4.3.so