Oracle RAC migration OCR (10g) Oracle RAC addition and deletion OCR reference: http://www.bkjia.com/database/201303/197136.html Oracle RAC backup and recovery OCR reference: http://www.bkjia.com/database/201303/196370.html If you want to change an existing ocr location or a faulty ocr location, you can use the following procedure to migrate the ocr. 1. view the current ocr [plain] [oracle @ node1 crs_1] $ ocrcheck Status of Oracle Cluster Registry is as follows: Version: 2 Total space (kbytes): 153496 Used space (kbytes ): 3816 Available space (kbytes): 149680 ID: 497615595 Device/File Name:/dev/raw/raw7 Device/File integrity check succeeded Device/File Name: /dev/raw/raw8 Device/File integrity check succeeded Cluster registry integrity check succeeded raw7 is normal ocr, raw8 is image ocr2. execute the following command on the node running Oracle clusterware: [plain] [oracle @ node1 crs_1] $ crsctl check crs CSS appears healthy CRS appears healthy EVM appears healthy 3. migrate normal ocr [plain] [root @ node1 bin] #. /ocrconfig-replace ocr/dev/raw/raw9 [oracle @ node1 crs_1] $ ocrcheck Status of Oracle Cluster Registry is as follows: Version: 2 Total space (kbytes ): 153496 Used space (kbytes): 3816 Available space (kbytes): 149680 ID: 497615595 Device/File Name:/dev/raw/raw9 Device/File integrity check succeeded Device/File Name: /dev/raw/raw8 Device/File integrity check succeeded Cluster registry integrity check succeeded You Can See That raw9 is normal ocr instead of raw74. migrate image ocr [plain] [root @ node1 bin] #. /ocrconfig-replace ocrmirror/dev/raw/raw7 [oracle @ node1 crs_1] $ ocrcheck Status of Oracle Cluster Registry is as follows: Version: 2 Total space (kbytes ): 153496 Used space (kbytes): 3816 Available space (kbytes): 149680 ID: 497615595 Device/File Name:/dev/raw/raw9 Device/File integrity check succeeded Device/File Name: /dev/raw/raw7 Device/File integrity check succeeded Cluster registry integrity check succeeded You Can See That raw7 is the image ocr instead of raw85. if a node is disabled during ocr migration, after a closed node is started, run the following command on the node: ocrconfig-repair