Capturing data of the previous time interval with Oracle Stream(HotLog)

Question

I read from 10g Oracle manual that Oracle Steam can capture data within specified time interval with begin_data and end_data options.
For example :
BEGIN
DBMS_CDC_PUBLISH.CREATE_CHANGE_SET(
change_set_name => 'set_cns',
description => 'set_cns...',
change_source_name => 'HOTLOG_SOURCE',
stop_on_ddl => 'y',
begin_date => sysdate,
end_date => sysdate + 1);
END;
However if I set begin_date to previous time from now, Oracle doesn't caputre data anymore in this case.(HotLog method)
(I set begin_date => sysdate - 1/24
end_date => sysdate + 1/24.)
Does anybody know to capture the previous time interval with Oracle Stream?

Answer 1

Change C2 to:
cursor c2(passing_date IN date) IS
  SELECT MONITOR_ID, SAMPLE_ID,
               COLL_TIME, DEW_POINT
    FROM ARCHIVE_DATA
    WHERE COLL_TIME < passing_date
    ORDER BY COLL_TIME desc;And rather than populating a table with the three records, you could just select the three records using: where COLL_TIME between Prev3_time and Prev1_time