diff --git a/django/contrib/gis/tests/geoapp/test_regress.py b/django/contrib/gis/tests/geoapp/test_regress.py
index c1a17326a2..e0a7dd9d73 100644
--- a/django/contrib/gis/tests/geoapp/test_regress.py
+++ b/django/contrib/gis/tests/geoapp/test_regress.py
@@ -5,6 +5,7 @@ from datetime import datetime
 
 from django.contrib.gis.geos import HAS_GEOS
 from django.contrib.gis.shortcuts import render_to_kmz
+from django.contrib.gis.tests.utils import no_oracle
 from django.db.models import Count, Min
 from django.test import TestCase, skipUnlessDBFeature
 
@@ -65,6 +66,10 @@ class GeoRegressionTests(TestCase):
         # .count() should not throw TypeError in __eq__
         self.assertEqual(cities_within_state.count(), 1)
 
+    # TODO: fix on Oracle -- get the following error because the SQL is ordered
+    # by a geometry object, which Oracle apparently doesn't like:
+    #  ORA-22901: cannot compare nested table or VARRAY or LOB attributes of an object type
+    @no_oracle
     def test_defer_or_only_with_annotate(self):
         "Regression for #16409. Make sure defer() and only() work with annotate()"
         self.assertIsInstance(list(City.objects.annotate(Count('point')).defer('name')), list)
diff --git a/django/contrib/gis/tests/relatedapp/tests.py b/django/contrib/gis/tests/relatedapp/tests.py
index e7d953f5a7..e98d637b69 100644
--- a/django/contrib/gis/tests/relatedapp/tests.py
+++ b/django/contrib/gis/tests/relatedapp/tests.py
@@ -263,6 +263,10 @@ class RelatedGeoModelTest(TestCase):
         self.assertEqual(1, len(vqs))
         self.assertEqual(3, vqs[0]['num_books'])
 
+    # TODO: fix on Oracle -- get the following error because the SQL is ordered
+    # by a geometry object, which Oracle apparently doesn't like:
+    #  ORA-22901: cannot compare nested table or VARRAY or LOB attributes of an object type
+    @no_oracle
     def test13c_count(self):
         "Testing `Count` aggregate with `.values()`.  See #15305."
         qs = Location.objects.filter(id=5).annotate(num_cities=Count('city')).values('id', 'point', 'num_cities')