Thankyou Lishan, just what I needed. LiShan Cheng <exriscer@xxxxxxxxx> wrote: Hi The doc says this: Adding an Oracle Cluster Registry You can add an OCR location after an upgrade or after completing the RAC installation Changing the Voting Disk Configuration after Installing Real Application Clusters You can dynamically add and remove voting disks after installing Real Application Clusters. Do this using the following commands where path is the fully qualified path for the additional voting disk. Run the following command as the root user to add a voting disk: crsctl add css votedisk path Those procedures are for existing installations as well you can check these notes as well, same as above though https://metalink.oracle.com/metalink/plsql/f?p=130:14:2065630870711760471::::p14_database_id,p14_docid,p14_show_header,p14_show_help,p14_black_frame,p14_font:NOT,317628.1,1,1,1,helvetica https://metalink.oracle.com/metalink/plsql/f?p=130:14:2065630870711760471::::p14_database_id,p14_docid,p14_show_header,p14_show_help,p14_black_frame,p14_font:NOT,329734.1,1,1,1,helvetica On 3/21/06, Zabair Ahmed <roon987@xxxxxxxxxxx> wrote: This chapter only tells you how to do this for new installations and not for existing installations. Thanks LiShan Cheng <exriscer@xxxxxxxxx> wrote: Hi Chapter 3 in Oracle Clusterware and Oracle Real Application Clusters Administration and Deployment Guide explians what you need rgds On 3/21/06, Zabair Ahmed < roon987@xxxxxxxxxxx> wrote: 10.2.0.1 on Solaris 9 The clusterware software and databases already exist (I know I could have multiplexed the OCR and Voting disk when I installed the clusterware software, but i didn't) I need to find a way how this can be done. As I mentioned i have already sucessfully installed the clusterware software and created a number of databases, which are all working fine. I have now realised the the OCR and Voting disk are a single point of failure. So I need to multiplex these. Is this possible and how? TIA --------------------------------- Yahoo! Messenger NEW - crystal clear PC to PC calling worldwide with voicemail --------------------------------- Yahoo! Messenger NEW - crystal clear PC to PC calling worldwide with voicemail --------------------------------- Yahoo! Photos ? NEW, now offering a quality print service from just 8p a photo. --------------------------------- Yahoo! Messenger NEW - crystal clear PC to PC calling worldwide with voicemail