RMAN-12000: execution layer initialization failed
RMAN-12001: could not open channel string
RMAN-12005: error during channel cleanup
RMAN-12007: cannot allocate more than number channels
RMAN-12008: could not locate backup piece string
RMAN-12009: command aborted because some backup pieces could not be located
RMAN-12010: automatic channel allocation initialization failed
RMAN-12011: multiple records for default device type found in catalog
RMAN-12012: multiple records for string parallelism found in catalog
RMAN-12013: multiple records for string channel number found in catalog
RMAN-12014: multiple records for default channel configuration for string found in catalog
RMAN-12015: configuration for string channel number is ignored
RMAN-12016: using channel string
RMAN-12017: could not locate pieces of backupset key string