On RAC database, backups starts fail with following warnings:
allocate channel for maintenance type disk;
RMAN retention policy is set to recovery window of 14 days
RMAN-08132: WARNING: cannot update recovery area reclaimable file list
ORA-00245: control file backup failed; target is likely on a local file system
The configuration for control file snapshot is on local disk (not shared)
RMAN> show all;
...
CONFIGURE SNAPSHOT CONTROLFILE NAME TO '/u01/app/oracle/product/11.2.0/dbhome_1/dbs/snapcf_sapcc1.f'; # default
Depending on the configuration, the snapshot controlfile might be created on 'Node 1', but is than read on 'Node 2' as that related channel is making a backup of the controlfile.
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