ORA-62083
        operation not allowed for system hidden virtual column
        
        
        Cause
        The system hidden virtual columns could not be dropped or modified directly.
        Action
        Avoid dropping or modifying system hidden virtual columns.
        
     
    
    
        ORA-62083
        operation not allowed for system hidden virtual column
        
        
        Cause
        The system hidden virtual columns could not be dropped or modified directly.
        Action
        Avoid dropping or modifying system hidden virtual columns.
        
     
    
    
        ORA-62083
        operation not allowed for system hidden virtual column
        
        
        Cause
        The system hidden virtual columns could not be dropped or modified directly.
        Action
        Avoid dropping or modifying system hidden virtual columns.