Insufficient Privilege:Not Authorized

Hello All,

I added my trail cloud account to eclipse. Found a new Schma as like 'DEV______________________'.

Under this schema, under tables section created 3 tables.Employee,Designation,Location.

later created an "Attribute view" joning (referential) all 3 tables.

Execute below statement for permissions to _SYS_REPO to my schema:

GRANT SELECT ON SCHEMA DEV_____________________ TO _SYS_REPO WITH GRANT OPTION

No errors on clicking

--> Save and validate

--> Save and Activate,

On Clicking "Raw data" of Data preview getting below error. Please guide me to proceed further ,

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

Thanks

Uday Kumar Narayana.