1 files changed, 4 insertions, 4 deletions
diff --git a/activerecord/lib/active_record/connection_adapters/mysql/database_statements.rb b/activerecord/lib/active_record/connection_adapters/mysql/database_statements.rb
index 56800f7590..78e7181266 100644
--- a/activerecord/lib/active_record/connection_adapters/mysql/database_statements.rb
+++ b/activerecord/lib/active_record/connection_adapters/mysql/database_statements.rb
@@ -52,14 +52,12 @@ module ActiveRecord
         end
         alias :exec_update :exec_delete
 
-        protected
+        private
 
           def last_inserted_id(result)
             @connection.last_id
           end
 
-        private
-
           def select_result(sql, name = nil, binds = [])
             if without_prepared_statement?(binds)
               execute_and_free(sql, name) { |result| yield result }
@@ -86,7 +84,9 @@ module ActiveRecord
               end
 
               begin
-                result = stmt.execute(*type_casted_binds)
+                result = ActiveSupport::Dependencies.interlock.permit_concurrent_loads do
+                  stmt.execute(*type_casted_binds)
+                end
               rescue Mysql2::Error => e
                 if cache_stmt
                   @statements.delete(sql)