采用裸设备的10g rac, 如果ocr或vote出现问题并且没有备份和镜像, 如何恢复? 或如何重建? 重建的话会不会影响现有的数据

you can config at most two ocr and three voting disk for the clusterware.
1) for ocr, there are backup automatically every hour/day/week, please check it:
ocrconfig -showbackup
2)for voting disk, it's not necessary to resolve or rebuild. if you lose majority of your vote disk, the cluster will reboot.

可以参考一下我写的一篇文章
http://space.itpub.net/69924/viewspace-152670

不错！