I recently came across this blog post about changing the SYS password in RAC databases: http://marioalcaide.wordpress.com/2011/05/24/changing-sys-password-in-rac-databases/ The author of this blog post makes the claim that the “SYS password is instance specific in RAC databases”. This claim is incorrect. I posted a comment to prove this falseness of this statement and offered the real culprit …