Partition pruning not working for partitioned table joins

Question

Hi,
We are joining  4 partitioned tables on partition column & other key columns. And we are filtering the driving table on partition key. But explain plan is showing that all tables except the driving table are not partition pruning and scanning all partitions.Is there any limitation that filter condition cannot be dynamic?
Thanks a lot in advance.
Here are the details...
SELECT a.pay_prd_id,
              a.a_id,
              a.a_evnt_no
  FROM b,
            c,
            a,
            d
WHERE  (    a.pay_prd_id = b.pay_prd_id ---partition range all
            AND a.a_evnt_no  = b.b_evnt_no
            AND a.a_id       = b.b_id
   AND (    a.pay_prd_id = c.pay_prd_id---partition range all
        AND a.a_evnt_no  = c.c_evnt_no
        AND a.a_id       = c.c_id
   AND (    a.pay_prd_id = d.pay_prd_id---partition range all
        AND a.a_evnt_no  = d.d_evnt_no
        AND a.a_id       = d.d_id
   AND (a.pay_prd_id =  ---partition range single
           CASE '201202'
              WHEN 'YYYYMM'
                 THEN (SELECT min(pay_prd_id)
                                  FROM pay_prd
                                 WHERE pay_prd_stat_cd = 2)
              ELSE TO_NUMBER ('201202', '999999')
           END
DDLs.
create table pay_prd
pay_prd_id number(6),
pay_prd_stat_cd integer,
pay_prd_stat_desc varchar2(20),
a_last_upd_dt DATE
insert into pay_prd
select 201202,2,'OPEN',sysdate from dual
union all
select 201201,1,'CLOSE',sysdate from dual
union all
select 201112,1,'CLOSE',sysdate from dual
union all
select 201111,1,'CLOSE',sysdate from dual
union all
select 201110,1,'CLOSE',sysdate from dual
union all
select 201109,1,'CLOSE',sysdate from dual
CREATE TABLE A
(PAY_PRD_ID    NUMBER(6) NOT NULL,
A_ID        NUMBER(9) NOT NULL,
A_EVNT_NO    NUMBER(3) NOT NULL,
A_DAYS        NUMBER(3),
A_LAST_UPD_DT    DATE
PARTITION BY RANGE (PAY_PRD_ID)
INTERVAL( 1)
  PARTITION A_0001 VALUES LESS THAN (201504)
ENABLE ROW MOVEMENT;
ALTER TABLE A ADD CONSTRAINT A_PK PRIMARY KEY (PAY_PRD_ID,A_ID,A_EVNT_NO) USING INDEX LOCAL;
insert into a
select 201202,1111,1,65,sysdate from dual
union all
select 201202,1111,2,75,sysdate from dual
union all
select 201202,1111,3,85,sysdate from dual
union all
select 201202,1111,4,95,sysdate from dual
CREATE TABLE B
(PAY_PRD_ID    NUMBER(6) NOT NULL,
B_ID        NUMBER(9) NOT NULL,
B_EVNT_NO    NUMBER(3) NOT NULL,
B_DAYS        NUMBER(3),
B_LAST_UPD_DT    DATE
PARTITION BY RANGE (PAY_PRD_ID)
INTERVAL( 1)
  PARTITION B_0001 VALUES LESS THAN (201504)
ENABLE ROW MOVEMENT;
ALTER TABLE B ADD CONSTRAINT B_PK PRIMARY KEY (PAY_PRD_ID,B_ID,B_EVNT_NO) USING INDEX LOCAL;
insert into b
select 201202,1111,1,15,sysdate from dual
union all
select 201202,1111,2,25,sysdate from dual
union all
select 201202,1111,3,35,sysdate from dual
union all
select 201202,1111,4,45,sysdate from dual
CREATE TABLE C
(PAY_PRD_ID    NUMBER(6) NOT NULL,
C_ID        NUMBER(9) NOT NULL,
C_EVNT_NO    NUMBER(3) NOT NULL,
C_DAYS        NUMBER(3),
C_LAST_UPD_DT    DATE
PARTITION BY RANGE (PAY_PRD_ID)
INTERVAL( 1)
  PARTITION C_0001 VALUES LESS THAN (201504)
ENABLE ROW MOVEMENT;
ALTER TABLE C ADD CONSTRAINT C_PK PRIMARY KEY (PAY_PRD_ID,C_ID,C_EVNT_NO) USING INDEX LOCAL;
insert into c
select 201202,1111,1,33,sysdate from dual
union all
select 201202,1111,2,44,sysdate from dual
union all
select 201202,1111,3,55,sysdate from dual
union all
select 201202,1111,4,66,sysdate from dual
CREATE TABLE D
(PAY_PRD_ID    NUMBER(6) NOT NULL,
D_ID        NUMBER(9) NOT NULL,
D_EVNT_NO    NUMBER(3) NOT NULL,
D_DAYS        NUMBER(3),
D_LAST_UPD_DT    DATE
PARTITION BY RANGE (PAY_PRD_ID)
INTERVAL( 1)
  PARTITION D_0001 VALUES LESS THAN (201504)
ENABLE ROW MOVEMENT;
ALTER TABLE D ADD CONSTRAINT D_PK PRIMARY KEY (PAY_PRD_ID,D_ID,D_EVNT_NO) USING INDEX LOCAL;
insert into c
select 201202,1111,1,33,sysdate from dual
union all
select 201202,1111,2,44,sysdate from dual
union all
select 201202,1111,3,55,sysdate from dual
union all
select 201202,1111,4,66,sysdate from dual

Answer 1

Below query generated from Business Objects and submitted to Database (the case statement is generated by BO). Cant we use Case/Subquery/Decode etc for the partitioned column? We are assuming that  the case causing the issue to not to dynamic partition elimination on the other joined partitioned tables (TAB_B_RPT, TAB_C_RPT).
SELECT TAB_D_RPT.acvy_amt,
       TAB_A_RPT.itnt_typ_desc,
       TAB_A_RPT.ls_typ_desc,
       TAB_A_RPT.evnt_no,
       TAB_C_RPT.pay_prd_id,
       TAB_B_RPT.id,
       TAB_A_RPT.to_mdfy,
       TAB_A_RPT.stat_desc
  FROM TAB_D_RPT,
       TAB_C_RPT fee_rpt,
       TAB_C_RPT,
       TAB_A_RPT,
       TAB_B_RPT
WHERE (TAB_B_RPT.id = TAB_A_RPT.id)
   AND (    TAB_A_RPT.pay_prd_id = TAB_D_RPT.pay_prd_id -- expecting Partition Range Single, but doing Partition Range ALL
        AND TAB_A_RPT.evnt_no    = TAB_D_RPT.evnt_no
        AND TAB_A_RPT.id         = TAB_D_RPT.id
   AND (    TAB_A_RPT.pay_prd_id = TAB_C_RPT.pay_prd_id -- expecting Partition Range Single, but doing Partition Range ALL
        AND TAB_A_RPT.evnt_no    = TAB_C_RPT.evnt_no
        AND TAB_A_RPT.id         = TAB_C_RPT.id
   AND (    TAB_A_RPT.pay_prd_id = fee_rpt.pay_prd_id -- expecting Partition Range Single
        AND TAB_A_RPT.evnt_no    = fee_rpt.evnt_no
        AND TAB_A_RPT.id         = fee_rpt.id
   AND (TAB_A_RPT.rwnd_ind = 'N')
   AND (TAB_A_RPT.pay_prd_id =
           CASE '201202'
              WHEN 'YYYYMM'
                 THEN (SELECT DISTINCT pay_prd.pay_prd_id
                                  FROM pay_prd
                                 WHERE pay_prd.stat_cd = 2)
              ELSE TO_NUMBER ('201202', '999999')
           END
And its explain plan is...
Plan
SELECT STATEMENT ALL_ROWS Cost: 79 K Bytes: 641 M Cardinality: 3 M
18 HASH JOIN Cost: 79 K Bytes: 641 M Cardinality: 3 M
3 PART JOIN FILTER CREATE SYS.:BF0000 Cost: 7 K Bytes: 72 M Cardinality: 3 M
2 PARTITION RANGE ALL Cost: 7 K Bytes: 72 M Cardinality: 3 M Partition #: 3 Partitions accessed #1 - #1048575
1 TABLE ACCESS FULL TABLE TAB_D_RPT Cost: 7 K Bytes: 72 M Cardinality: 3 M Partition #: 3 Partitions accessed #1 - #1048575
17 HASH JOIN Cost: 57 K Bytes: 182 M Cardinality: 874 K
14 PART JOIN FILTER CREATE SYS.:BF0001 Cost: 38 K Bytes: 87 M Cardinality: 914 K
13 HASH JOIN Cost: 38 K Bytes: 87 M Cardinality: 914 K
6 PART JOIN FILTER CREATE SYS.:BF0002 Cost: 8 K Bytes: 17 M Cardinality: 939 K
5 PARTITION RANGE ALL Cost: 8 K Bytes: 17 M Cardinality: 939 K Partition #: 9 Partitions accessed #1 - #1048575
4 TABLE ACCESS FULL TABLE TAB_C_RPT Cost: 8 K Bytes: 17 M Cardinality: 939 K Partition #: 9 Partitions accessed #1 - #1048575
12 HASH JOIN Cost: 24 K Bytes: 74 M Cardinality: 957 K
7 INDEX FAST FULL SCAN INDEX (UNIQUE) TAB_B_RPT_PK Cost: 675 Bytes: 10 M Cardinality: 941 K
11 PARTITION RANGE SINGLE Cost: 18 K Bytes: 65 M Cardinality: 970 K Partition #: 13 Partitions accessed #KEY(AP)
10 TABLE ACCESS FULL TABLE TAB_A_RPT Cost: 18 K Bytes: 65 M Cardinality: 970 K Partition #: 13 Partitions accessed #KEY(AP)
9 HASH UNIQUE Cost: 4 Bytes: 14 Cardinality: 2
8 TABLE ACCESS FULL TABLE PAY_PRD Cost: 3 Bytes: 14 Cardinality: 2
16 PARTITION RANGE JOIN-FILTER Cost: 8 K Bytes: 106 M Cardinality: 939 K Partition #: 17 Partitions accessed #:BF0001
15 TABLE ACCESS FULL TABLE TAB_C_RPT Cost: 8 K Bytes: 106 M Cardinality: 939 K Partition #: 17 Partitions accessed #:BF0001
Thanks Again.