My question is about compatibility of Server express cobol application with OAC new functionality with Oracle Database 12c 

Our applications use the Oracle Pro*COBOL precompiler (rtsora) (in conjunction with the cobsql) to access Oracle DB on a remote server

OAC is provided by Oracle and  we need to know if it is compatible with our way of doing connexion to Oracle DB ?

I am prepared to ask Oracle but first I would like your answer ,

thanks