Bucketing Period Report

Question

I want to build one report based on Bucketing Period. My row for the report is bucketing period. User will select a bucketing period from the selection screen. Then my output should be.
if the user selects 03.2009 as the bucketing period in the selection screen then my report should look like this.
Bucketing Period                  Value
03.2009                                1000
04.2009                                  200
05.2009                                300
06.2009                                400 
07.2009                                600
08.2009                               30
09.2009                               20000
10.2009                      
11.2009
12.2009
01.2010
02.2010
03.2010
04.2010
05.2010
06.2010
07.2010
08.2010
09.2010
10.2010
Rest of 2010
2011
2012
2013
2014
2015
After 2015
For the first 20 month the bucketing period should be by every month wise, next row rest the balace of that year till Dec, next 6 rows with the bucketing should be total of the year ref the layout 2011, 2012, 2013, 2014, 2015. and after that the rest of all values in the cube. This bucketing period is dynamic and based on the selection what the user provides in the selection screen. The cube will provide the data based on the bucketing month. How it can be reported with the above format. In the above format the values are not fully mentioned but in the real senario it will be filled.

Answer 1

I have this in my notes but I can't remember if it worked....It was a couple of years ago now:
set lines 120
set pages 0
set serverout on
set long 1000000
set longchunksize 1000000
variable report_bind CLOB
BEGIN
  DBMS_WORKLOAD_REPLAY.COMPARE_PERIOD_REPORT (
                           replay_id1 => 1,
                           replay_id2 => '2',
                           format => 'HTML',
                           result => :report_bind);
END;
SPOOL WRC_Compare.html
print :report_bind
SPOOL OFF