diff --git a/django/db/backends/oracle/introspection.py b/django/db/backends/oracle/introspection.py
index 0dd0304302b..1ccbd285995 100644
--- a/django/db/backends/oracle/introspection.py
+++ b/django/db/backends/oracle/introspection.py
@@ -66,6 +66,7 @@ class DatabaseIntrospection(BaseDatabaseIntrospection):
         Returns a dictionary of {field_index: (field_index_other_table, other_table)}
         representing all relationships to the given table. Indexes are 0-based.
         """
+        table_name = table_name.upper()
         cursor.execute("""
     SELECT ta.column_id - 1, tb.table_name, tb.column_id - 1
     FROM   user_constraints, USER_CONS_COLUMNS ca, USER_CONS_COLUMNS cb,