ORA-41106
        invalid argument string: value is null
        
        
        Cause
        An attempt to read the scan hostname or port failed
        Action
        Verify pcw is running and scan is configured. Run grdcscan read_config to verify or grdcscan set_config host:port to set scan name and port.
        
     
    
    
        ORA-41106
        invalid argument string: value is null
        
        
        Cause
        An attempt to read the scan hostname or port failed
        Action
        Verify pcw is running and scan is configured. Run grdcscan read_config to verify or grdcscan set_config host:port to set scan name and port.
        
     
    
    
        ORA-41106
        invalid argument string: value is null
        
        
        Cause
        An attempt to read the scan hostname or port failed
        Action
        Verify pcw is running and scan is configured. Run grdcscan read_config to verify or grdcscan set_config host:port to set scan name and port.