title: EFCore 3.0 Devart Provider With OracleDB doen't work raw sql
body: <p>My project run on <code>.net core 3.1</code>, I use data provider <code>Devart.Oracle</code> also my project data stores on <code>OracleDB 11g</code></p>
  
  <p>My problem when i try to get sequence with EFCore V3.0 like that;</p>
  
  <pre><code>using (TransactionScope scope = new TransactionScope())
              {
                _dbcontext.TABLEs.Add(values);
                var _sqlseq = string.Format(@"PACKAGE.MY_TABLE_SEQ");
                _dbcontext.TABLEs.FromSql(_sqlseq).FirstOrDefault();
                _dbcontext.SaveChanges();
                scope.Complete();
              }
  </code></pre>
  
  <p>Also I tried <code>FromSqlRaw</code> but i didn't take any result and idea ? </p>