I face with that error message on  our 11.2.0.2 RAC database which is working with ASM at  AIX 6.1 Operating System.

We started to get ORA-00245: control file backup operation failed &RMAN-03009: failure of Control File and SPFILE Autobackup command on C1 channel xxx errors after We have been enabled block change tracking to can take Incremental backup on our system.

Our current RMAN setting is:

RMAN > CONFIGURE SNAPSHOT CONTROLFILE NAME TO '+ORADATA/PROD00/CONTROLFILE/snapcf_prod00.f';

Error message during Incremental(Level 1):

RMAN-03009: failure of backup command on C1 channel at 04/04/2012 08:50:55
ORA-00245: control file backup operation failed
continuing other job steps, job failed will not be re-run

RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of backup plus archivelog command at 04/04/2012 08:53:52

RMAN-03009: failure of backup command on C13 channel at 04/04/2012 08:50:55
ORA-00245: control file backup operation failed

After making some search We get below metalink document:

RMAN Controlfile Must Reside on Shared Device for RAC database in 11G [ID 1263621.1]

We changed our parameter as below:

RMAN > CONFIGURE SNAPSHOT CONTROLFILE NAME TO ‘+ORADATA/PBAL00/CONTROLFILE/snapcf_pbal00.f’;

Reference:
RMAN Controlfile Must Reside on Shared Device for RAC database in 11G [ID 1263621.1]
In RAC environment from 11.2 onwards Backup Or Snapshot controlfile needs to be in shared location [ID 1472171.1]
Top RMAN 11.2 issues [ID 1473914.1]

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