diff --git a/docs/ref/django-admin.txt b/docs/ref/django-admin.txt
index 0c88b5aadb..4a7b03de43 100644
--- a/docs/ref/django-admin.txt
+++ b/docs/ref/django-admin.txt
@@ -1285,6 +1285,8 @@ correctly:
 
     $ pip install tblib
 
+This feature isn't available on Oracle.
+
 .. warning::
 
     When test parallelization is enabled and a test fails, Django may be