Hi Tapas,
With MDC, you longer need to invoke those HCP procedures for this purpose. Which user are you using to create these objects and are you creating CV's which query some tables in another schema ?
I use the SYSTEM user to create a CV. I am able to preview the data without any issues.
Try creating a role in the Security section and provide SELECT privileges for CVs and other objects in the tab "Object Privilege". Assign this new role to your user.
Cheers,
Murali