During RMAN backup, you can see the following errors.
ORA-00245: control file backup operation failed
RMAN-08132: WARNING: can not update recovery area reclaimable file list
The directory given as the Snapshot Controlfile in RMAN configuration is not accessible from all RAC servers.
The below settings need to be changed. This directory should be given a common directory that all servers in the RAC environment can access.
RMAN > show all;
CONFIGURE SNAPSHOT CONTROLFILE NAME TO '/u01/app/oracle/product/11.2.0/dbhome_1/dbs/snapcf_orcl1.f'; # default
RMAN > CONFIGURE SNAPSHOT CONTROLFILE NAME TO '/common_directory/snapcf_orcl1.f';
The common directory on the nfs file system should be mounted with the following parameters.