ORA-19744
        Volume string:string is currently in use and cannot be unmounted.
        
        
        Cause
        The specified volume could not be unmounted because it was in use and had open files.
        Action
        Retry the unmount after all open files in the volume have been closed.
        
     
    
    
        ORA-19744
        Volume string:string is currently in use and cannot be unmounted.
        
        
        Cause
        The specified volume could not be unmounted because it was in use and had open files.
        Action
        Retry the unmount after all open files in the volume have been closed.
        
     
    
    
        ORA-19744
        Volume string:string is currently in use and cannot be unmounted.
        
        
        Cause
        The specified volume could not be unmounted because it was in use and had open files.
        Action
        Retry the unmount after all open files in the volume have been closed.