ORA-28804
        Data source cannot close.
        
        
        Cause
        The data source, which could be either a file or a database), failed to close.
        Action
        Enable tracing to determine the exact cause of this error. Contact Oracle customer support if needed.
        
     
    
    
        ORA-28804
        Data source cannot close.
        
        
        Cause
        The data source, which could be either a file or a database), failed to close.
        Action
        Enable tracing to determine the exact cause of this error. Contact Oracle customer support if needed.
        
     
    
    
        ORA-28804
        Data source cannot close.
        
        
        Cause
        The data source, which could be either a file or a database), failed to close.
        Action
        Enable tracing to determine the exact cause of this error. Contact Oracle customer support if needed.