SCHUB Performance test2

Description
select /*+ parallel*/
count(*) count,
wdj.status_type,
xxen_util.meaning(wdj.status_type,'WIP_JOB_STATUS',700) status,
case when wdj.status_type in (1,3,4,6) then 'Y' end active_status,
nvl2(wro.date_required,'not null',null) date_required,
case when wro.quantity>0 then '>0' else '0' end quantity,
case when wro.operation_seq_num>0 then '>0' else '<=0' end operation_seq_num,
case when wro.wip_supply_type not in (5,6) then 'Y' end eligible_wip_supply_type
from
(select greatest(wro.required_quantity-wro.quantity_issued,0) quantity, wro.* from wip_requirement_operations wro) wro,
wip_discrete_jobs wdj
where
--wro.operation_seq_num>0 and
wro.organization_id=wdj.organization_id and
wro.wip_entity_id=wdj.wip_entity_id
group by
wdj.status_type,
nvl2(wro.date_required,'not null',null),
case when wro.quantity>0 then '>0' else '0' end,
case when wro.operation_seq_num>0 then '>0' else '<=0' end,
case when wro.wip_supply_type not in (5,6) then 'Y' end
order by
count(*) desc