Are you taking onto account that you will need to recreate the control file and copy in some form or fashion system etc in order to break the RAC instances db into multiple db's? That's what I thought you were originally asking. -----Original Message----- From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Zabair Ahmed Sent: Thursday, November 17, 2005 6:43 AM To: oracle-l@xxxxxxxxxxxxx Subject: Re: RAC de-clustering Thanks to all those who replied, maybe i was not clear in my original email. Basically all i want to be able to do is stop the CRS daemon on nodes 1 and 3 (so the instances on these nodes will be single RACed instances) and also have the CRS daemon running on nodes 2 and 4. I know i can do something like init.crs on the nodes i want to stop the CRS daemon (nodes 1 and 3) Do I have to shut down all the instances beforehand before i can issue the init.crs stop? Will the other instances on nodes 3 and 4 still be under CRS control?