Update from database issue with edmx

Hi All,

I am using entity for database connection using Oracle.DataAccess.Client. While chosing option from edmx "Update from database", I am getting below error :

Unable to convert runtime connection string to it's design time equivalent. The libraries required to enable visual studio to communicate with database for design purpose (DDEX provider) are not installed for provider (Oracle.DataAccess.Client).

Do I need to install Oracle provider for .net or is there any other alternative.

Let me know