AIX 7.1 is certified on Oracle Database 11gR2 using AIX 7.1 TL0 SP1 or higher. It is also necessary that the fix for APARs IZ87564 and IZ87216 be applied. For Oracle RAC 11gR2 the fix for Oracle bug 9457492 must also be applied. The 64 bit kernel is required for all Oracle Database 11gR2 installations