diff --git a/activerecord/lib/active_record/connection_adapters/connection_specification.rb b/activerecord/lib/active_record/connection_adapters/connection_specification.rb
index 3f8b14bf67fe3..9a133168f8718 100644
--- a/activerecord/lib/active_record/connection_adapters/connection_specification.rb
+++ b/activerecord/lib/active_record/connection_adapters/connection_specification.rb
@@ -237,8 +237,8 @@ def resolve_env_connection(spec)
         # hash and merges with the rest of the hash.
         # Connection details inside of the "url" key win any merge conflicts
         def resolve_hash_connection(spec)
-          if url = spec.delete("url")
-            connection_hash = resolve_string_connection(url)
+          if spec["url"] && spec["url"] !~ /^jdbc:/
+            connection_hash = resolve_string_connection(spec.delete("url"))
             spec.merge!(connection_hash)
           end
           spec
diff --git a/activerecord/test/cases/connection_adapters/connection_handler_test.rb b/activerecord/test/cases/connection_adapters/connection_handler_test.rb
index 599e8c762cfcc..68ddc08f8955d 100644
--- a/activerecord/test/cases/connection_adapters/connection_handler_test.rb
+++ b/activerecord/test/cases/connection_adapters/connection_handler_test.rb
@@ -17,6 +17,12 @@ def teardown
         ENV["DATABASE_URL"] = @previous_database_url
       end
 
+      def test_jdbc_url
+        config   = { "production" => { "url" => "jdbc:postgres://localhost/foo" } }
+        actual   = klass.new(config).resolve
+        assert_equal config, actual
+      end
+
       def test_environment_does_not_exist_in_config_url_does_exist
         ENV['DATABASE_URL'] = "postgres://localhost/foo"
         config      = { "not_production" => {  "adapter" => "not_postgres", "database" => "not_foo" } }