In cloud servers, user security level can be enhanced with certain level of authentication with the help of method ”Proofs of Authorization ” . The policy-based authorization systems provide a unsafe decisions that might be threaten sensitive resources. In proposed system, only trusted user will perform transaction with the help of two level of authorization proof. Using policy consistency constraints and different enforcement approaches guarantee the trustworthiness of transactions on the cloud servers. When Two-Phase Validation Commit protocol is invoked it will reduce the unsafe decisions and increase the authentication process. Only valid user is allowed to upload and download their files on the cloud The end-user is primarily concerned with the provider’s security policy, how and where their data is stored and who has access to that data. On the other hand, concerns for the Cloud service provider can range from the physical security of the infrastructure and the access control mechanism of cloud assets, to the execution and maintenance of security policy. In this paper, we analyze the methodologies used to authorize users who access distributed database systems and the risks faced by these methodologies