Problem running Axapta 3.0 with Oracle 9i DB

Hi all, I’ve come a across a rather uncommon problem on a cliet’s site. We have installed and setup both Axapta 3.0SP1 and Oracle 9iR2 here, but the applications can’t be run when the user login as a normal user. When we tried to login as the administrator then everything is ok. The problem is that the client do not want to grant the admin rights to all the user. How can i resolve this problem? Have anybody here encounter the same?