Fixed #30307 -- Fixed incorrect quoting of database user password when using dbshell on Oracle.

Regression in acfc650f.

django/db/backends/oracle/base.py

@@ -213,7 +213,7 @@ class DatabaseWrapper(BaseDatabaseWrapper):
         return settings_dict['NAME']
 
     def _connect_string(self):
-        return '%s/\\"%s\\"@%s' % (self.settings_dict['USER'], self.settings_dict['PASSWORD'], self._dsn())
+        return '%s/"%s"@%s' % (self.settings_dict['USER'], self.settings_dict['PASSWORD'], self._dsn())
 
     def get_connection_params(self):
         conn_params = self.settings_dict['OPTIONS'].copy()

docs/releases/2.2.1.txt

@@ -9,4 +9,6 @@ Django 2.2.1 fixes several bugs in 2.2.
 Bugfixes
 ========
 
-* ...
+* Fixed a regression in Django 2.1 that caused the incorrect quoting of
+  database user password when using :djadmin:`dbshell` on Oracle
+  (:ticket:`30307`).

tests/backends/oracle/tests.py

@@ -87,7 +87,7 @@ class TransactionalTests(TransactionTestCase):
         old_password = connection.settings_dict['PASSWORD']
         connection.settings_dict['PASSWORD'] = 'p@ssword'
         try:
-            self.assertIn('/\\"p@ssword\\"@', connection._connect_string())
+            self.assertIn('/"p@ssword"@', connection._connect_string())
             with self.assertRaises(DatabaseError) as context:
                 connection.cursor()
             # Database exception: "ORA-01017: invalid username/password" is