1 files changed, 5 insertions, 1 deletions
diff --git a/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb b/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb
index 9ac5a8760e..dc6287e32c 100644
--- a/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb
+++ b/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb
@@ -281,7 +281,7 @@ module ActiveRecord
       end
 
       def discard! # :nodoc:
-        @connection.socket_io.reopen(IO::NULL)
+        @connection.socket_io.reopen(IO::NULL) rescue nil
         @connection = nil
       end
 
@@ -318,6 +318,10 @@ module ActiveRecord
         postgresql_version >= 90300
       end
 
+      def supports_foreign_tables?
+        postgresql_version >= 90300
+      end
+
       def supports_pgcrypto_uuid?
         postgresql_version >= 90400
       end