diff --git a/patroni/postgresql/config.py b/patroni/postgresql/config.py
index 8cae0dfb..46c3991d 100644
--- a/patroni/postgresql/config.py
+++ b/patroni/postgresql/config.py
@@ -1001,8 +1001,9 @@ class ConfigHandler(object):
             if self._postgresql.major_version >= 90500:
                 time.sleep(1)
                 try:
-                    pending_restart = self._postgresql.query('SELECT COUNT(*) FROM pg_catalog.pg_settings'
-                                                             ' WHERE pending_restart').fetchone()[0] > 0
+                    pending_restart = self._postgresql.query(
+                        'SELECT COUNT(*) FROM pg_catalog.pg_settings WHERE pg_catalog.lower(name) != ALL(%s)'
+                        ' AND pending_restart', [n.lower() for n in self._RECOVERY_PARAMETERS]).fetchone()[0] > 0
                     self._postgresql.set_pending_restart(pending_restart)
                 except Exception as e:
                     logger.warning('Exception %r when running query', e)
diff --git a/patroni/postgresql/validator.py b/patroni/postgresql/validator.py
index 945d5afd..5da6d1b3 100644
--- a/patroni/postgresql/validator.py
+++ b/patroni/postgresql/validator.py
@@ -170,7 +170,6 @@ parameters = CaseInsensitiveDict({
     'DateStyle': String(90300, None),
     'db_user_namespace': Bool(90300, None),
     'deadlock_timeout': Integer(90300, None, 1, 2147483647, 'ms'),
-    'debug_invalidate_system_caches_always': Integer(140000, None, '0', '0', None),
     'debug_pretty_print': Bool(90300, None),
     'debug_print_parse': Bool(90300, None),
     'debug_print_plan': Bool(90300, None),
@@ -208,7 +207,6 @@ parameters = CaseInsensitiveDict({
     'enable_partition_pruning': Bool(110000, None),
     'enable_partitionwise_aggregate': Bool(110000, None),
     'enable_partitionwise_join': Bool(110000, None),
-    'enable_resultcache': Bool(140000, None),
     'enable_seqscan': Bool(90300, None),
     'enable_sort': Bool(90300, None),
     'enable_tidscan': Bool(90300, None),