ORA-19566
        exceeded limit of corrupt_limit corrupt blocks for file data_file
        - corrupt_limit: The corrupt block upper limit.
- data_file: The data file to be backed up.
        Cause
        The user-specified limit of allowable corrupt blocks was exceeded while reading the specified data file for a data file copy or backup.
        Action
        None. The copy or backup operation fails. The session trace file contains detailed information about which blocks were corrupt.
        
     
    
    
        ORA-19566
        exceeded limit of string corrupt blocks for file string
        
        
        Cause
        The user specified limit of allowable corrupt blocks was exceeded while reading the specified datafile for a datafile copy or backup.
        Action
        None. The copy or backup operation fails. The session trace file contains detailed information about which blocks were corrupt.
        
     
    
    
        ORA-19566
        exceeded limit of string corrupt blocks for file string
        
        
        Cause
        The user specified limit of allowable corrupt blocks was exceeded while reading the specified datafile for a datafile copy or backup.
        Action
        None. The copy or backup operation fails. The session trace file contains detailed information about which blocks were corrupt.