hmm.. if the backup (either manual or automatic one) is also corrupt, then your point makes sense. Probably, root.sh can be cross-checked to see how OCR is configured initially and all the default services getting added. It would be a nice thing to try over a weekend. If somebody has a test cluster, then I would start with reverse-engineering root.sh and building the cluster manually. But if you look at it, re-installing the CRS would be faster and easier rather than manually building the cluster. I guess its a matter of preference :) -- Thanks, -Sudhi. ----- Original Message ---- From: K Gopalakrishnan <kaygopal@xxxxxxxxx> To: racdba@xxxxxxxxxxxxx Sent: Tuesday, February 6, 2007 11:04:37 AM Subject: RAC Re: OCR Reconfiguration? Sudhi, I agree the OCR is backed up and ocrcheck can be used to verify the ocr config. But the weekold ocr / is also deemed corrupted. In this case, the customer just want to reconfigure the OCR without re-installing the cluster. Let us assume we detect the ocr corruption only after a week? Would it be good if we can just re-instantiate the OCR? -Gopal