diff --git a/django/db/backends/oracle/operations.py b/django/db/backends/oracle/operations.py
index ae6bd432fb..d48c8dd868 100644
--- a/django/db/backends/oracle/operations.py
+++ b/django/db/backends/oracle/operations.py
@@ -334,7 +334,7 @@ END;
         # always defaults to uppercase.
         # We simplify things by making Oracle identifiers always uppercase.
         if not name.startswith('"') and not name.endswith('"'):
-            name = '"%s"' % truncate_name(name.upper(), self.max_name_length())
+            name = '"%s"' % truncate_name(name, self.max_name_length())
         # Oracle puts the query text into a (query % args) construct, so % signs
         # in names need to be escaped. The '%%' will be collapsed back to '%' at
         # that stage so we aren't really making the name longer here.
diff --git a/tests/backends/oracle/tests.py b/tests/backends/oracle/tests.py
index 85d45805e0..a50f38dbe2 100644
--- a/tests/backends/oracle/tests.py
+++ b/tests/backends/oracle/tests.py
@@ -4,7 +4,9 @@ from django.db import DatabaseError, connection
 from django.db.models import BooleanField
 from django.test import TransactionTestCase
 
-from ..models import Square
+from ..models import (
+    Square, VeryLongModelNameZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ,
+)
 
 
 @unittest.skipUnless(connection.vendor == 'oracle', 'Oracle tests')
@@ -16,6 +18,13 @@ class Tests(unittest.TestCase):
         quoted_name = connection.ops.quote_name(name)
         self.assertEqual(quoted_name % (), name)
 
+    def test_quote_name_db_table(self):
+        model = VeryLongModelNameZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ
+        db_table = model._meta.db_table.upper()
+        self.assertEqual(f'"{db_table}"', connection.ops.quote_name(
+            'backends_verylongmodelnamezzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz',
+        ))
+
     def test_dbms_session(self):
         """A stored procedure can be called through a cursor wrapper."""
         with connection.cursor() as cursor: