In this article, we examine analysis of a Markovian retrial queue with recurrent customers, switch over time and server vacation. In this model, retrial times, vacation times and service times are assumed to have an exponential distribution. We obtain the probability generating function for the number of customers in the system. We also compute the average number of customers in the system. Some of the special cases are discussed. To calibrate the model’sstability some numerical examples are illustrated