In Retail POS, a point of sale (POS) device goes into offline mode whenever the retail server is unavailable. Therefore, if the connection with the retail server is lost, Retail POS automatically switches to the offline database. During a sales transaction, if a data request doesn't succeed within the time-out interval that is configured in the offline profile, Retail POS automatically switches to the offline database and continues the sales transaction. While POS device is in offline mode, Retail POS tries to reconnect to the retail server after the reconnection attempt interval that is configured in the offline profile. This reconnection attempt occurs only at the beginning of a transaction.