SAP HANA: UNABLE TO SEE THE DATA IN ATTRIBUTE VIEW

HI Experts,

i created a attribute view and activated sucessfully in sap hana cloud platform. when i tried to check data preview, it showing an error like

Error: SAP DBTech JDBC: [258]: insufficient privilege: Not authorized.

please guide me, what i need to do , to get privilege for checking data in attribute view.

Thanks in advance......................

BR

babu