SET GLOBAL innodb_fast_shutdown=0;
create table t1(keyc int primary key, c1 char(100)) engine = innodb;
begin;
update t1 set c1 = 'mysql';
update t1 set c1 = 'oracle';
delete from t1;
commit;
drop table t1;
SET GLOBAL innodb_fast_shutdown=0;
SET GLOBAL innodb_undo_log_truncate=1;
SET GLOBAL innodb_purge_rseg_truncate_frequency=1;