System maintenance is one of the important phases of the implementation. The system may undergo some changes or new type of need may arise from the users. Due to day-to-day operations, there may arise strength or weaknesses which need the modifications. This is what about the maintenance of the system. Now the question arises does it needed periodically. The periodical maintenance of the system reduces the chances of failure of the system as the possible problems can be forecasted. In the period maintenance the anticipated shortcomings may be short out in planned way. During this process the changes can be done with the hardware, software and documentation to support its operational effectiveness. This includes making changes to improve a systems performance, correct problems, enhance security or address user requirements. While carrying out the maintenance it has to be ensuring that it doesn‘t disrupt the operation or degrade the performance.