The Add method adds a new role to the role list.

Overloaded List:

• Add(string)

  This method adds a role to the roles list and sets it on a on a newly created connection or a connection coming from connection pool.

• Add(string, OracleOpaqueString)

  This method adds a role with a password to the roles list and sets it on a on a newly created connection or a connection coming from connection pool.