diff --git a/django/db/backends/oracle/creation.py b/django/db/backends/oracle/creation.py
index d93aac4d77..200ef6a394 100644
--- a/django/db/backends/oracle/creation.py
+++ b/django/db/backends/oracle/creation.py
@@ -120,6 +120,8 @@ class DatabaseCreation(BaseDatabaseCreation):
                     print("Tests cancelled.")
                     sys.exit(1)
 
+        self.connection.close()  # done with main user -- test user and tablespaces created
+
         real_settings = settings.DATABASES[self.connection.alias]
         real_settings['SAVED_USER'] = self.connection.settings_dict['SAVED_USER'] = self.connection.settings_dict['USER']
         real_settings['SAVED_PASSWORD'] = self.connection.settings_dict['SAVED_PASSWORD'] = self.connection.settings_dict['PASSWORD']