Chuck, I understand your point, however no matter how good your software is, if the hardware is a lemon, it will still fail. Most downtime encountered in I.T. is hardware related. That's why most management prefers a single vendor for hardware, OS, and DBMS like the AS400. If it fails blame it to IBM. In your situation, SUN for hardware and OS while ORACLE for DBMS. Remember all ORACLE DBMS software functionality is the same up to the access method/interrupt mechanism of the OS box it is installed.