ORA-19603
        cannot backup or copy an active file with KEEP ... UNRECOVERABLE options
        
        
        Cause
        You tried to copy or backup a file, which was not closed cleanly, with KEEP ... UNRECOVERABLE option. This is not allowed because when the file is restored, it will require redo logs before it becomes usable, and redo logs will not have been saved because of KEEP ... UNRECOVERABLE option.
        Action
        Take the tablespace offline cleanly, or close the database and retry the operation.
        
     
    
    
        ORA-19603
        cannot backup or copy active file with KEEP .. UNRECOVERABLE option
        
        
        Cause
        The user tried to copy or backup a file that was not closed cleanly, with KEEP .. UNRECOVERABLE option.  This is not allowed because when restored, the file will require redo application before it is usable, and redo will not be saved because of KEEP .. UNRECOVERABLE option.
        Action
        Take the tablespace offline cleanly, or close the database and retry the copy or backup.
        
     
    
    
        ORA-19603
        cannot backup or copy active file with KEEP .. UNRECOVERABLE option
        
        
        Cause
        The user tried to copy or backup a file that was not closed cleanly, with KEEP .. UNRECOVERABLE option.  This is not allowed because when restored, the file will require redo application before it is usable, and redo will not be saved because of KEEP .. UNRECOVERABLE option.
        Action
        Take the tablespace offline cleanly, or close the database and retry the copy or backup.