1drop table if exists t1; 2create table t1 (a int primary key) engine=innodb; 3SET @saved_dbug = @@SESSION.debug_dbug; 4SET SESSION debug_dbug="+d,warn_during_ha_commit_trans"; 5INSERT INTO t1 VALUES (1); 6Warnings: 7Warning 1196 Some non-transactional changed tables couldn't be rolled back 8SHOW WARNINGS; 9Level Code Message 10Warning 1196 Some non-transactional changed tables couldn't be rolled back 11drop table t1; 12SET debug_dbug= @saved_dbug; 13