Well, they are both in the same group, which seems to be what you want.
I suspect you've given ownership of oraptsap's home dir to the oracle user (or someone else who is NOT oraptsap.)
This is wrong; user must own their own home dir and contents.
Just use eg
Code:
ls -l /home
ls -al /home/oracle
and adjust oraptsap's ownerships / perms to match, but using oraptsap, not oracle .