hi all,
I did these steps in my test envrionment:
1) db2 backup db sample online to d:\db_backup include logs
// the image is 20101217152834
// the log s***12.log is included in the image.
2) db2 insert into test values(‘abc’, 20)
3) db2 restored db sample from d:\db_backup taken at 20101217152834 logtarget d:\temp
//the log s***12.log is extracted to the d:\temp
4) db2 rollforward db sample to 2010-12-17-15.00.00 overflow log path (d:\temp) and stop

then I tested the restored db. I find the new record ('abc', 20) is stored in the test. I suppose this record is removed after a restore operation.
I find the s***12.log and the current active log s***13.log is processed for in the restore operation.

I just want it process the included log and restore back to an early point of time? Any suggestions why it does not work?
byt i am using db2 v8.1

The ROLLFORWARD command assumes the timestamp is in UTC, unless you specify USING LOCAL TIME.

The time is in UTC as n_i said or you can do:

3) db2 restored db sample from d:\db_backup taken at 20101217152834 logtarget d:\temp
3a) remove all logs from the active log dir (move them somewhere else or delete if they're not needed)
4) db2 rollforward db sample to end of logs overflow log path (d:\temp) and stop