PROT-00051
reserved file or device name specified for Oracle Cluster Registry location
Cause
One of the commands 'ocrconfig -add', 'ocrconfig -repair', or 'ocrconfig -replace' was issued specifying a reserved file or device name. The names week.ocr, day.ocr, backup00.ocr, backup01.ocr, and backup02.ocr are reserved for Oracle.
Action
Choose an OCR location that is not one of the reserved names.