RMAN-12012: multiple records for DISK parallelism found in catalog Error: While running RMAN backup getting below error. RMAN-00571: =========================================================== RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS =============== RMAN-00571: =========================================================== RMAN-12010: automatic channel allocation initialization failed RMAN-12012: multiple records for DISK parallelism found in catalog Solution: Connect to sqlplus as sysdba and run below exec dbms_backup_restore.resetconfig; Re-run Rman backup