The nativity command in AIX has the feature of preview before patching the filesets, and it is a must that every SA's will go for a preview and go ahead to patch the filesets. rather be it a ML / TL / APAR /PTFor Fileset.
Advantage of the nativity tool
# Can show you the space availability in the server for patching,
# patches already exists are shown
# If efix installed it will not allow to patch
# Proper error details if there will be clearly shown.
Disadvantage of Bladelogic
# Error is not clear
# when efix is there,Patch analysis is complete,when patched it fails giving irrrelavant error messages
Raised be me in the name if Richa.