SQL & PL/SQL :: Best Way To Get Several Rows From SCD For Each Key

We have large (millions of records) Slow changind dimension (SCD) type 2 (see "Creating another dimension record " URL>.....We need to get several rows from this SCD for each key (AGREEMENT_ID) in a SQL query - to join to facts table and get several data points of each agreement (on several different points in time) stored in SCD.Here is SCD table structure:

CREATE TABLE AGREEMENT
(
"AGREEMENT_ID" NUMBER(*,0) NOT NULL ENABLE,
"ACTUAL_DATE" DATE NOT NULL ENABLE,
"ACTUAL_END_DATE" DATE NOT NULL ENABLE,
"OPEN_DATE" DATE NOT NULL ENABLE,
"LIMIT" NUMBER(23,8)
--++ a lot of other fields not needed for this task ....
CONSTRAINT "PK_MD_AGREEMENT" PRIMARY KEY ("AGREEMENT_ID", "ACTUAL_DATE") USING INDEX
)

The 1st simple approach would be to join facts to SCD as many (N) times as many different points of time you need - resulting in N Full Table Scans for SCD:

select ...
from fact,
AGREEMENT agr1,
AGREEMENT agr2,
AGREEMENT agr3
where
fact.AGREEMENT_ID = agr1.AGREEMENT_ID and agr1.open_date between actual_date and actual_end_date
and fact.AGREEMENT_ID = agr2.AGREEMENT_ID and :dateBOP between actual_date and actual_end_date
and fact.AGREEMENT_ID = agr3.AGREEMENT_ID and :dateEOP between actual_date and actual_end_date

2nd approach: 1 Full Table Scan for SCD + group by:

select ...
from fact,
(
Select AGREEMENT_ID,
max(case when open_date between actual_date and actual_end_date then LIMIT end) LIMIT_At_Open_DATE,
max(case when :dateBOP between actual_date and actual_end_date then LIMIT end) LIMIT_At_BeginOfPeriod_DATE,
max(case when :dateEOP between actual_date and actual_end_date then LIMIT end) LIMIT_At_EndOfPeriod_DATE

from agreement

-- ++optionally WHERE for those 3 dates, but possibly with no effect on non-partitioned table? Or WHERE to put less data on MAX() input (3 row for each agreement instead of 4...1000 without WHERE?)

group by AGREEMENT_ID
) agr
where fact.AGREEMENT_ID = agr.AGREEMENT_ID