Update AIX 5.3 to TL07 SP5

Hi,
We need to update our AIX to TL07 SP5, and it's an HACMP architecture with node1 and node2 and is active/active. I need help because I never patched an AIX in HACMP, and I don't know the sequence that I have to proceed, I have Oracle databases running on both (node1, node2).
I receive a procedure with multibos, but I'm not confortable with this, is there someone who can help me on that ?
I need to apply this change before the change of the hour this week, so that mean this week end.

Thank you very much for your help.