ORA-31640
        unable to open dump file "string" for read
        
        
        Cause
        Oracle Data Pump Import was unable to open and read the export file. This message is usually followed by device messages from the operating system.
        Action
        Take the appropriate action to restore the device.
        
     
    
    
        ORA-31640
        unable to open dump file "string" for read
        
        
        Cause
        Import was unable to open the export file for reading. This message is usually followed by device messages from the operating system.
        Action
        Take appropriate action to restore the device.
        
     
    
    
        ORA-31640
        unable to open dump file "string" for read
        
        
        Cause
        Import was unable to open the export file for reading. This message is usually followed by device messages from the operating system.
        Action
        Take appropriate action to restore the device.