This is the text description of the syntax diagram for the RMAN catalog construct.

CATALOG { {ARCHIVELOG | BACKUPPIECE | CONTROLFILECOPY} ' filename ' [, ' filename ']... | DATAFILECOPY ' filename ' [, ' filename ']... [ { {LEVEL [=] integer | TAG [=] ['] tag_name [']}}...] | { {RECOVERY AREA | DB_RECOVERY_FILE_DEST} | START WITH ' string_pattern '} [NOPROMPT]}

Elements in the diagram are described in the discussion that follows the diagram.