Failure to connect a 19c database with an old style C OCI program.
I created a user "CAO/safirs" in 19c database.
I can access to this user with Sqlplus but not with a very simple old style C OCI program.
This same program can access to 12c database.
ret=orlon(&lda, &hda,"CAO",3,"safirs",6,flag);
It return 0 with 12c database but 1017 with 19c database.
Thank you.