在线备份后无法恢复

多分区的环境-9.7

目录下我的在线备份：

total 135044

-rw------- 1 db2ms db2iadm1 117260288 Feb 23 18:47 YXTD.0.db2ms.NODE0000.CATN0000.20160223184723.001

-rw------- 1 db2ms db2iadm1   4751360 Feb 23 18:49 YXTD.0.db2ms.NODE0001.CATN0000.20160223184901.001

-rw------- 1 db2ms db2iadm1   4751360 Feb 23 18:48 YXTD.0.db2ms.NODE0002.CATN0000.20160223184839.001

-rw------- 1 db2ms db2iadm1   4751360 Feb 23 18:48 YXTD.0.db2ms.NODE0003.CATN0000.20160223184839.001

-rw------- 1 db2ms db2iadm1   6582272 Feb 23 18:48 YXTD.0.db2ms.NODE0004.CATN0000.20160223184839.001

db2_all "<<+0< db2 restore db yxtd taken at 20160223184723  on /home/db2ms logtarget /home/db2ms/db2acr0"

SQL2542N  No match for a database image file was found based on the source

database alias "YXTD" and timestamp "20160223184723" provided.

db2 restore db yxtd ... completed rc=4

备份和时间戳都没错呀，我要提取归档日志，为啥老是报错呢？