after system refresh ,i found the import queue is empty as i change the setting ctc from 0 to 1.
i restore it as copy the old sid in /usr/sap/trans/buffer/<sid>
lesson and learn
backup the /usr/sap/trans/buffer directory before next fresh and if change the tms settings
来源：https://www.cnblogs.com/tingxin/p/12400926.html