delete from act_hi_actinst;
delete from act_hi_attachment;
delete from act_hi_comment;
delete from act_hi_detail;
delete from act_hi_identitylink;
delete from act_hi_procinst;
delete from act_hi_taskinst;
delete from act_hi_varinst;
delete from act_ru_task;
delete from act_ru_variable;
delete from bus_process_name;
delete from bus_process_new;
delete from t_datas;