are you saying you want to upgrade OS from solaris 9 to solaris 10. All nodes in RAC should have same OS, you can not have one node running on 9 and another on 10. thanks..subodh On 4 April 2011 22:09, Paul Barrett <tinojam@xxxxxxxxx> wrote: > Is it possible to run Solaris 9 and 10 nodes within the same Oracle10gR2 > RAC cluster? I am thinking about switching out the Solaris 9 nodes with the > Solaris 10 nodes... join/remove. Has anyone done this before? > -- ============================== DO NOT FORGET TO SMILE TODAY ==============================