Unless obviously named, it may not be readily apparent exactly where the Oracle Cluster Registry (OCR) can be located

For confirmation of the OCR location, refer to the ocr.loc file in /var/opt/oracle:

e.g.

# cd /var/opt/oracle

# ls
ocr.loc      oprocd       oraInst.loc  oratab       scls_scr
 

# cat ocr.loc
ocrconfig_loc=/ocrvote/OCR
local_only=FALSE
 

Note that the OCR must be on shared storage. Please refer to the appropriate Installation and Configuration guide for Storage Foundation for Oracle RAC.

Determining the location of the Oracle Cluster Registry in a Storage Foundation Oracle RAC environment