Luc, I am running 8.1.7 32 bit on 64 bit AIX 5L, haven't had any problems. Patch 2896876 is for running 8 and 9 on the same box, which I have not done. HTH, Mike Michael Boligan Bayer Corporate and Business Service North America Information Services Technology & Operations, BHC Office: (508) 660-4698 Cell: (508) 221-5682 michael.boligan.b@xxxxxxxxx -- //www.freelists.org/webpage/oracle-l