Question on Tuning SQL query

Question

We are converting from a 9i database to an 11g database.  The query defined works perfectly under 9i (about 1 second) but is taking 60-70 seconds to return in 11g.  The wierd thing is that it has an outer query and a subquery.  If I remove the where clause from the outer query it executes in less than a second.  Here is the query...
SELECT period, biweek_start, biweek_end, pay_period_complete, worker_count
  FROM (SELECT to_char(en.start_date, 'yyyy/mm/dd') || ' to ' ||
               to_char(en.start_date + 13, 'yyyy/mm/dd') period,
               en.start_date biweek_start,
               en.start_date + 13 biweek_end,
               decode(sign(sysdate - en.start_date - 13),
                      -1,
                      'In Progress',
                      'Completed') pay_period_complete,
               ta_mssauth_pkg.actual_endorser(en.start_date, '33811')  worker_count
          FROM (select worker_id,
                       default_endorser resolved_endorser,
                       effective_date,
                       expiration_date
                  from endorse_delegate_history_v
                 where default_endorser = '33811'
                union
                select worker_id,
                       temporary_delegate resolved_endorser,
                       effective_date,
                       expiration_date
                  from endorse_delegate_history_v
                 where temporary_delegate = '33811'
                   and temporary_delegate is not null ) de,
               endorse_activity_v en
         WHERE en.worker_id = de.worker_id
           AND en.endorse_status = 'N'
           AND en.start_date <= de.expiration_date
           AND en.start_date + 13 >= de.effective_date
         GROUP BY en.start_date)
WHERE worker_count > 0;
The function that is used as part of the inner query to generate worker_counts is pretty complex.  But it runs subsecond if you run it manually.  And it works great when you run the query without the "where worker_count > 0" portion.
So the where clause on the outer query seems to be causing the problem - it is based off a function that should have calculated a value FIRST then the outer query should run based on the result of the inner query.  Below are the explain plans for the two different versions:
BAD QUERY - 60 - 70 Seconds
Description Object Owner Object Name Cost Cardinality Bytes
SELECT STATEMENT, GOAL = ALL_ROWS     617 1 41
HASH GROUP BY     617 1 41
  NESTED LOOPS         
   NESTED LOOPS     616 1 41
    VIEW CA17062   58 186 4464
     SORT UNIQUE     58 186 5392
      UNION-ALL         
       TABLE ACCESS BY INDEX ROWID TAS_AUTH ENDORSE_DELEGATE_HISTORY_TBL 42 139 4170
        INDEX RANGE SCAN TAS_AUTH ENDORSE_DELEGATE_HIST_DEF_IDX 3 139 
       TABLE ACCESS BY INDEX ROWID TAS_AUTH ENDORSE_DELEGATE_HISTORY_TBL 14 47 1222
        INDEX RANGE SCAN TAS_AUTH ENDORSE_DELEGATE_HIST_TEMP_IDX 3 47 
    INDEX RANGE SCAN TAS_AUTH TA_SCLENDORSE_PK 2 1 
       TABLE ACCESS BY INDEX ROWID TAS_AUTH ENDORSE_ACTIVITY_TBL 3 1 17
GOOD QUERY < 1 second
Description Object Owner Object Name Cost Cardinality Bytes
SELECT STATEMENT, GOAL = ALL_ROWS     617 25 1025
HASH GROUP BY     617 25 1025
  NESTED LOOPS         
   NESTED LOOPS     616 25 1025
    VIEW CA17062   58 186 4464
     SORT UNIQUE     58 186 5392
      UNION-ALL         
       TABLE ACCESS BY INDEX ROWID TAS_AUTH ENDORSE_DELEGATE_HISTORY_TBL 42 139 4170
        INDEX RANGE SCAN TAS_AUTH ENDORSE_DELEGATE_HIST_DEF_IDX 3 139 
       TABLE ACCESS BY INDEX ROWID TAS_AUTH ENDORSE_DELEGATE_HISTORY_TBL 14 47 1222
        INDEX RANGE SCAN TAS_AUTH ENDORSE_DELEGATE_HIST_TEMP_IDX 3 47 
    INDEX RANGE SCAN TAS_AUTH TA_SCLENDORSE_PK 2 1 
   TABLE ACCESS BY INDEX ROWID TAS_AUTH ENDORSE_ACTIVITY_TBL 3 1 17
So those expleain plans look pretty much identical to me - can anyone tell me why having the where clause on the outer query is causing so much trouble and how I can fix it?  I've tried using NO_MERGE and PUSH_SUBQ hints - but nothing that I have done has made the bad query any better.
Thanks in advance!
Cory

Answer 1

I have traced the queries and attached the trace files here too...
Here is the bad query...
SQL ID: 0g07hqvjma217 Plan Hash: 0
alter session set sql_trace = true
call     count       cpu    elapsed       disk      query    current        rows
Parse        0      0.00       0.00          0          0          0           0
Execute      1      0.00       0.00          0          0          0           0
Fetch        0      0.00       0.00          0          0          0           0
total        1      0.00       0.00          0          0          0           0
Misses in library cache during parse: 0
Misses in library cache during execute: 1
Optimizer mode: ALL_ROWS
Parsing user id: 331  (CA17062)
SQL ID: 9m7787camwh4m Plan Hash: 0
begin :id := sys.dbms_transaction.local_transaction_id; end;
call     count       cpu    elapsed       disk      query    current        rows
Parse        3      0.00       0.00          0          0          0           0
Execute      3      0.00       0.00          0          0          0           3
Fetch        0      0.00       0.00          0          0          0           0
total        6      0.00       0.00          0          0          0           3
Misses in library cache during parse: 0
Optimizer mode: ALL_ROWS
Parsing user id: 331  (CA17062)
SELECT period, biweek_start, biweek_end, pay_period_complete, worker_count
  FROM (SELECT to_char(en.start_date, 'yyyy/mm/dd') || ' to ' ||
               to_char(en.start_date + 13, 'yyyy/mm/dd') period,
               en.start_date biweek_start,
               en.start_date + 13 biweek_end,
               decode(sign(sysdate - en.start_date - 13),
                      -1,
                      'In Progress',
                      'Completed') pay_period_complete,
               ta_mssauth_pkg.actual_endorser(en.start_date, '33811')  worker_count
          FROM (select worker_id,
                       default_endorser resolved_endorser,
                       effective_date,
                       expiration_date
                  from endorse_delegate_history_v
                 where default_endorser = '33811'
                union
                select worker_id,
                       temporary_delegate resolved_endorser,
                       effective_date,
                       expiration_date
                  from endorse_delegate_history_v
                 where temporary_delegate = '33811'
                   and temporary_delegate is not null ) de,
               endorse_activity_v en
         WHERE en.worker_id = de.worker_id
           AND en.endorse_status = 'N'
           AND en.start_date <= de.expiration_date
           AND en.start_date + 13 >= de.effective_date
         GROUP BY en.start_date)
WHERE worker_count > 0
call     count       cpu    elapsed       disk      query    current        rows
Parse        1      0.00       0.00          0          0          0           0
Execute      1      0.00       0.00          0          0          0           0
Fetch        1      6.11      14.77         38        455          0           6
total        3      6.11      14.77         38        455          0           6
Misses in library cache during parse: 0
Optimizer mode: ALL_ROWS
Parsing user id: 331  (CA17062)
Number of plan statistics captured: 1
Rows (1st) Rows (avg) Rows (max)  Row Source Operation
         6          6          6  HASH GROUP BY (cr=9330657 pr=826 pw=0 time=86392712 us cost=698 size=41 card=1)
        21         21         21   NESTED LOOPS  (cr=9330657 pr=826 pw=0 time=18442971 us)
        49         49         49    NESTED LOOPS  (cr=9330609 pr=826 pw=0 time=26482026 us cost=697 size=41 card=1)
       213        213        213     VIEW  (cr=32 pr=32 pw=0 time=851827 us cost=58 size=5112 card=213)
       213        213        213      SORT UNIQUE (cr=32 pr=32 pw=0 time=850864 us cost=58 size=5598 card=213)
       213        213        213       UNION-ALL  (cr=32 pr=32 pw=0 time=4390885 us)
        15         15         15        TABLE ACCESS BY INDEX ROWID ENDORSE_DELEGATE_HISTORY_TBL (cr=10 pr=10 pw=0 time=718114 us c)
        15         15         15         INDEX RANGE SCAN ENDORSE_DELEGATE_HIST_DEF_IDX (cr=3 pr=3 pw=0 time=119582 us cost=3 size=)
       198        198        198        TABLE ACCESS BY INDEX ROWID ENDORSE_DELEGATE_HISTORY_TBL (cr=22 pr=22 pw=0 time=7328583 us )
       198        198        198         INDEX RANGE SCAN ENDORSE_DELEGATE_HIST_TEMP_IDX (cr=3 pr=3 pw=0 time=107110 us cost=3 size)
        49         49         49     INDEX RANGE SCAN TA_SCLENDORSE_PK (cr=9330577 pr=794 pw=0 time=157121745 us cost=2 size=0 card)
        21         21         21    TABLE ACCESS BY INDEX ROWID ENDORSE_ACTIVITY_TBL (cr=48 pr=0 pw=0 time=493 us cost=3 size=17 ca)
Rows     Execution Plan
      0  SELECT STATEMENT   MODE: ALL_ROWS
      6   HASH (GROUP BY)
     21    NESTED LOOPS
     49     NESTED LOOPS
    213      VIEW
    213       SORT (UNIQUE)
    213        UNION-ALL
     15         TABLE ACCESS   MODE: ANALYZED (BY INDEX ROWID) OF
                    'ENDORSE_DELEGATE_HISTORY_TBL' (TABLE)
     15          INDEX   MODE: ANALYZED (RANGE SCAN) OF
                     'ENDORSE_DELEGATE_HIST_DEF_IDX' (INDEX)
    198         TABLE ACCESS   MODE: ANALYZED (BY INDEX ROWID) OF
                    'ENDORSE_DELEGATE_HISTORY_TBL' (TABLE)
    198          INDEX   MODE: ANALYZED (RANGE SCAN) OF
                     'ENDORSE_DELEGATE_HIST_TEMP_IDX' (INDEX)
     49      INDEX   MODE: ANALYZED (RANGE SCAN) OF 'TA_SCLENDORSE_PK'
                 (INDEX (UNIQUE))
     21     TABLE ACCESS   MODE: ANALYZED (BY INDEX ROWID) OF
                'ENDORSE_ACTIVITY_TBL' (TABLE)
SQL ID: gwpkaabt9naxy Plan Hash: 2668568437
SELECT DISTINCT DE.WORKER_ID
FROM
ENDORSE_DELEGATE_HISTORY_V DE , ENDORSE_ACTIVITY_V EN ,
  WORKER_ACTIVITY_AUTH_V EA WHERE DE.WORKER_ID = EN.WORKER_ID AND
  EN.WORKER_ID = EA.WORKER_ID AND EN.START_DATE = :B2 AND EN.ENDORSE_STATUS =
  'N' AND EA.ACTIVITY_DATE >= EN.START_DATE AND EA.ACTIVITY_DATE <=
  EN.START_DATE + 13 AND EN.START_DATE <= DE.EXPIRATION_DATE AND
  EN.START_DATE + 13 >= DE.EFFECTIVE_DATE AND (DE.DEFAULT_ENDORSER = :B1 OR
  DE.TEMPORARY_DELEGATE = :B1 ) ORDER BY DE.WORKER_ID
call     count       cpu    elapsed       disk      query    current        rows
Parse        1      0.00       0.00          0          0          0           0
Execute  24015      0.97       1.50          0          0          0           0
Fetch    24015     56.38     132.62        593    9318744          0         285
total    48031     57.35     134.12        593    9318744          0         285
Misses in library cache during parse: 0
Optimizer mode: ALL_ROWS
Parsing user id: 3054  (TAS_AUTH)   (recursive depth: 1)
Number of plan statistics captured: 1
Rows (1st) Rows (avg) Rows (max)  Row Source Operation
         0          0          0  SORT UNIQUE (cr=407 pr=43 pw=0 time=1057475 us cost=805 size=83 card=1)
         0          0          0   NESTED LOOPS  (cr=407 pr=43 pw=0 time=1057453 us cost=804 size=17347 card=209)
         0          0          0    HASH JOIN RIGHT ANTI (cr=407 pr=43 pw=0 time=1057442 us cost=804 size=16511 card=209)
        19         19         19     INDEX RANGE SCAN INDACC_02X (cr=1 pr=0 pw=0 time=78 us cost=1 size=114 card=19)(object id 5403)
         0          0          0     NESTED LOOPS  (cr=406 pr=43 pw=0 time=1055235 us)
         0          0          0      NESTED LOOPS  (cr=406 pr=43 pw=0 time=1055231 us cost=803 size=19856 card=272)
         0          0          0       NESTED LOOPS  (cr=406 pr=43 pw=0 time=1055226 us cost=431 size=350 card=7)
       186        186        186        TABLE ACCESS BY INDEX ROWID ENDORSE_DELEGATE_HISTORY_TBL (cr=32 pr=0 pw=0 time=4375 us cost)
       213        213        213         BITMAP CONVERSION TO ROWIDS (cr=6 pr=0 pw=0 time=759 us)
         1          1          1          BITMAP OR  (cr=6 pr=0 pw=0 time=533 us)
         1          1          1           BITMAP CONVERSION FROM ROWIDS (cr=3 pr=0 pw=0 time=178 us)
        15         15         15            SORT ORDER BY (cr=3 pr=0 pw=0 time=152 us)
        15         15         15             INDEX RANGE SCAN ENDORSE_DELEGATE_HIST_DEF_IDX (cr=3 pr=0 pw=0 time=62 us cost=3 size=)
         1          1          1           BITMAP CONVERSION FROM ROWIDS (cr=3 pr=0 pw=0 time=328 us)
       198        198        198            SORT ORDER BY (cr=3 pr=0 pw=0 time=319 us)
       198        198        198             INDEX RANGE SCAN ENDORSE_DELEGATE_HIST_TEMP_IDX (cr=3 pr=0 pw=0 time=214 us cost=3 siz)
         0          0          0        TABLE ACCESS BY INDEX ROWID ENDORSE_ACTIVITY_TBL (cr=374 pr=43 pw=0 time=1052137 us cost=2 )
         0          0          0         INDEX UNIQUE SCAN TA_SCLENDORSE_PK (cr=374 pr=43 pw=0 time=1051749 us cost=1 size=0 card=1)
         0          0          0       INDEX RANGE SCAN WORKER_ACTIVITY_WRKR_IX (cr=0 pr=0 pw=0 time=0 us cost=2 size=0 card=90)(ob)
         0          0          0      TABLE ACCESS BY INDEX ROWID WORKER_ACTIVITY_TBL (cr=0 pr=0 pw=0 time=0 us cost=53 size=943 ca)
         0          0          0    INDEX UNIQUE SCAN SCHEDULE_PK (cr=0 pr=0 pw=0 time=0 us cost=0 size=4 card=1)(object id 54342)
Rows     Execution Plan
      0  SELECT STATEMENT   MODE: ALL_ROWS
      0   SORT (UNIQUE)
      0    CONCATENATION
      0     NESTED LOOPS (ANTI)
     19      NESTED LOOPS
      0       NESTED LOOPS
      0        NESTED LOOPS
      0         TABLE ACCESS   MODE: ANALYZED (BY INDEX ROWID) OF
                    'ENDORSE_DELEGATE_HISTORY_TBL' (TABLE)
    186          INDEX   MODE: ANALYZED (RANGE SCAN) OF
                     'ENDORSE_DELEGATE_HIST_TEMP_IDX' (INDEX)
    213         TABLE ACCESS   MODE: ANALYZED (BY INDEX ROWID) OF
                    'ENDORSE_ACTIVITY_TBL' (TABLE)
      1          INDEX   MODE: ANALYZED (UNIQUE SCAN) OF
                     'TA_SCLENDORSE_PK' (INDEX (UNIQUE))
      1        TABLE ACCESS   MODE: ANALYZED (BY INDEX ROWID) OF
                   'WORKER_ACTIVITY_TBL' (TABLE)
     15         INDEX   MODE: ANALYZED (RANGE SCAN) OF
                    'WORKER_ACTIVITY_WRKR_IX' (INDEX)
     15       INDEX   MODE: ANALYZED (UNIQUE SCAN) OF 'SCHEDULE_PK'
                  (INDEX (UNIQUE))
      1      INDEX   MODE: ANALYZED (RANGE SCAN) OF 'INDACC_02X' (INDEX)
    198     NESTED LOOPS (ANTI)
    198      NESTED LOOPS
      0       NESTED LOOPS
      0        NESTED LOOPS
      0         TABLE ACCESS   MODE: ANALYZED (BY INDEX ROWID) OF
                    'ENDORSE_DELEGATE_HISTORY_TBL' (TABLE)
      0          INDEX   MODE: ANALYZED (RANGE SCAN) OF
                     'ENDORSE_DELEGATE_HIST_DEF_IDX' (INDEX)
      0         TABLE ACCESS   MODE: ANALYZED (BY INDEX ROWID) OF
                    'ENDORSE_ACTIVITY_TBL' (TABLE)
      0          INDEX   MODE: ANALYZED (UNIQUE SCAN) OF
                     'TA_SCLENDORSE_PK' (INDEX (UNIQUE))
      0        TABLE ACCESS   MODE: ANALYZED (BY INDEX ROWID) OF
                   'WORKER_ACTIVITY_TBL' (TABLE)
      0         INDEX   MODE: ANALYZED (RANGE SCAN) OF
                    'WORKER_ACTIVITY_WRKR_IX' (INDEX)
      0       INDEX   MODE: ANALYZED (UNIQUE SCAN) OF 'SCHEDULE_PK'
                  (INDEX (UNIQUE))
      0      INDEX   MODE: ANALYZED (RANGE SCAN) OF 'INDACC_02X' (INDEX)
SQL ID: 7v8ndut1y3b99 Plan Hash: 2002979989
SELECT DEFAULT_ENDORSER
FROM
( SELECT DEFAULT_ENDORSER FROM ENDORSE_DELEGATE_HISTORY_V WHERE WORKER_ID =
  :B3 AND TEMPORARY_DELEGATE IS NULL AND :B2 <= EXPIRATION_DATE AND :B1 >=
  EFFECTIVE_DATE ORDER BY EXPIRATION_DATE DESC ) WHERE ROWNUM = 1
call     count       cpu    elapsed       disk      query    current        rows
Parse        1      0.00       0.00          0          0          0           0
Execute    285      0.00       0.01          0          0          0           0
Fetch      285      0.11       3.24        195      13078          0         285
total      571      0.11       3.26        195      13078          0         285
Misses in library cache during parse: 0
Optimizer mode: ALL_ROWS
Parsing user id: 3054  (TAS_AUTH)   (recursive depth: 1)
Number of plan statistics captured: 1
Rows (1st) Rows (avg) Rows (max)  Row Source Operation
         1          1          1  COUNT STOPKEY (cr=22 pr=20 pw=0 time=576320 us)
         1          1          1   VIEW  (cr=22 pr=20 pw=0 time=576285 us cost=23 size=72 card=12)
         1          1          1    SORT ORDER BY STOPKEY (cr=22 pr=20 pw=0 time=576273 us cost=23 size=396 card=12)
         2          2          2     TABLE ACCESS BY INDEX ROWID ENDORSE_DELEGATE_HISTORY_TBL (cr=22 pr=20 pw=0 time=576205 us cost)
        20         20         20      INDEX RANGE SCAN ENDORSE_DELEGATE_HIST_PK (cr=3 pr=3 pw=0 time=197569 us cost=3 size=0 card=1)
Rows     Execution Plan
      0  SELECT STATEMENT   MODE: ALL_ROWS
      1   COUNT (STOPKEY)
      1    VIEW
      1     SORT (ORDER BY STOPKEY)
      2      TABLE ACCESS   MODE: ANALYZED (BY INDEX ROWID) OF
                 'ENDORSE_DELEGATE_HISTORY_TBL' (TABLE)
     20       INDEX   MODE: ANALYZED (RANGE SCAN) OF
                  'ENDORSE_DELEGATE_HIST_PK' (INDEX (UNIQUE))
SQL ID: cf06fwacdmgfk Plan Hash: 1546270724
select 'x'
from
dual
call     count       cpu    elapsed       disk      query    current        rows
Parse        1      0.00       0.00          0          0          0           0
Execute      1      0.00       0.00          0          0          0           0
Fetch        1      0.00       0.00          0          0          0           1
total        3      0.00       0.00          0          0          0           1
Misses in library cache during parse: 0
Optimizer mode: ALL_ROWS
Parsing user id: 331  (CA17062)
Number of plan statistics captured: 1
Rows (1st) Rows (avg) Rows (max)  Row Source Operation
         1          1          1  FAST DUAL  (cr=0 pr=0 pw=0 time=6 us cost=2 size=0 card=1)
Rows     Execution Plan
      0  SELECT STATEMENT   MODE: ALL_ROWS
      1   FAST DUAL
OVERALL TOTALS FOR ALL NON-RECURSIVE STATEMENTS
call     count       cpu    elapsed       disk      query    current        rows
Parse        5      0.00       0.00          0          0          0           0
Execute      6      0.00       0.00          0          0          0           3
Fetch        2      6.11      14.77         38        455          0           7
total       13      6.11      14.77         38        455          0          10
Misses in library cache during parse: 0
Misses in library cache during execute: 1
OVERALL TOTALS FOR ALL RECURSIVE STATEMENTS
call     count       cpu    elapsed       disk      query    current        rows
Parse        2      0.00       0.00          0          0          0           0
Execute  24300      0.97       1.51          0          0          0           0
Fetch    24300     56.49     135.87        788    9331822          0         570
total    48602     57.46     137.39        788    9331822          0         570
Misses in library cache during parse: 0
    6  user  SQL statements in session.
    0  internal SQL statements in session.
    6  SQL statements in session.
    4  statements EXPLAINed in this session.
Trace file: TAST_ora_26885.trc
Trace file compatibility: 11.1.0.7
Sort options: default
       1  session in tracefile.
       6  user  SQL statements in trace file.
       0  internal SQL statements in trace file.
       6  SQL statements in trace file.
       6  unique SQL statements in trace file.
       4  SQL statements EXPLAINed using schema:
           dbo.plan_table
             Schema was specified.
             Existing table was used.
   73341  lines in trace file.
     178  elapsed seconds in trace file.
Here is the good query
SQL ID: 0g07hqvjma217 Plan Hash: 0
alter session set sql_trace = true
call     count       cpu    elapsed       disk      query    current        rows
Parse        0      0.00       0.00          0          0          0           0
Execute      1      0.00       0.00          0          0          0           0
Fetch        0      0.00       0.00          0          0          0           0
total        1      0.00       0.00          0          0          0           0
Misses in library cache during parse: 0
Misses in library cache during execute: 1
Optimizer mode: ALL_ROWS
Parsing user id: 331  (CA17062)
SQL ID: 9m7787camwh4m Plan Hash: 0
begin :id := sys.dbms_transaction.local_transaction_id; end;
call     count       cpu    elapsed       disk      query    current        rows
Parse        3      0.00       0.00          0          0          0           0
Execute      3      0.00       0.00          0          0          0           3
Fetch        0      0.00       0.00          0          0          0           0
total        6      0.00       0.00          0          0          0           3
Misses in library cache during parse: 0
Optimizer mode: ALL_ROWS
Parsing user id: 331  (CA17062)
SELECT period, biweek_start, biweek_end, pay_period_complete, worker_count
  FROM (SELECT to_char(en.start_date, 'yyyy/mm/dd') || ' to ' ||
               to_char(en.start_date + 13, 'yyyy/mm/dd') period,
               en.start_date biweek_start,
               en.start_date + 13 biweek_end,
               decode(sign(sysdate - en.start_date - 13),
                      -1,
                      'In Progress',
                      'Completed') pay_period_complete,
               ta_mssauth_pkg.actual_endorser(en.start_date, '33811')  worker_count
          FROM (select worker_id,
                       default_endorser resolved_endorser,
                       effective_date,
                       expiration_date
                  from endorse_delegate_history_v
                 where default_endorser = '33811'
                union
                select worker_id,
                       temporary_delegate resolved_endorser,
                       effective_date,
                       expiration_date
                  from endorse_delegate_history_v
                 where temporary_delegate = '33811'
                   and temporary_delegate is not null ) de,
               endorse_activity_v en
         WHERE en.worker_id = de.worker_id
           AND en.endorse_status = 'N'
           AND en.start_date <= de.expiration_date
           AND en.start_date + 13 >= de.effective_date
         GROUP BY en.start_date)
-- WHERE worker_count > 0
call     count       cpu    elapsed       disk      query    current        rows
Parse        1      0.02       0.03          0          0          0           0
Execute      1      0.00       0.00          0          0          0           0
Fetch        1      0.02       0.13          0        841          0           6
total        3      0.04       0.16          0        841          0           6
Misses in library cache during parse: 1
Optimizer mode: ALL_ROWS
Parsing user id: 331  (CA17062)
Number of plan statistics captured: 1
Rows (1st) Rows (avg) Rows (max)  Row Source Operation
         6          6          6  HASH GROUP BY (cr=841 pr=0 pw=0 time=79927 us cost=617 size=1025 card=25)
        21         21         21   NESTED LOOPS  (cr=841 pr=0 pw=0 time=15116 us)
       451        451        451    NESTED LOOPS  (cr=409 pr=0 pw=0 time=33039 us cost=616 size=1025 card=25)
       213        213        213     VIEW  (cr=32 pr=0 pw=0 time=12117 us cost=58 size=4464 card=186)
       213        213        213      SORT UNIQUE (cr=32 pr=0 pw=0 time=12005 us cost=58 size=5392 card=186)
       213        213        213       UNION-ALL  (cr=32 pr=0 pw=0 time=1313 us)
        15         15         15        TABLE ACCESS BY INDEX ROWID ENDORSE_DELEGATE_HISTORY_TBL (cr=10 pr=0 pw=0 time=245 us cost=4
2 size=4170 card=139)
        15         15         15         INDEX RANGE SCAN ENDORSE_DELEGATE_HIST_DEF_IDX (cr=3 pr=0 pw=0 time=122 us cost=3 size=0 ca
rd=139)(object id 54559)
       198        198        198        TABLE ACCESS BY INDEX ROWID ENDORSE_DELEGATE_HISTORY_TBL (cr=22 pr=0 pw=0 time=427 us cost=1
4 size=1222 card=47)
       198        198        198         INDEX RANGE SCAN ENDORSE_DELEGATE_HIST_TEMP_IDX (cr=3 pr=0 pw=0 time=222 us cost=3 size=0 c
ard=47)(object id 54560)
       451        451        451     INDEX RANGE SCAN TA_SCLENDORSE_PK (cr=377 pr=0 pw=0 time=63328 us cost=2 size=0 card=1)(object
id 54553)
        21         21         21    TABLE ACCESS BY INDEX ROWID ENDORSE_ACTIVITY_TBL (cr=432 pr=0 pw=0 time=2185 us cost=3 size=17 c
ard=1)
Rows     Execution Plan
      0  SELECT STATEMENT   MODE: ALL_ROWS
      6   HASH (GROUP BY)
     21    NESTED LOOPS
    451     NESTED LOOPS
    213      VIEW
    213       SORT (UNIQUE)
    213        UNION-ALL
     15         TABLE ACCESS   MODE: ANALYZED (BY INDEX ROWID) OF
                    'ENDORSE_DELEGATE_HISTORY_TBL' (TABLE)
     15          INDEX   MODE: ANALYZED (RANGE SCAN) OF
                     'ENDORSE_DELEGATE_HIST_DEF_IDX' (INDEX)
    198         TABLE ACCESS   MODE: ANALYZED (BY INDEX ROWID) OF
                    'ENDORSE_DELEGATE_HISTORY_TBL' (TABLE)
    198          INDEX   MODE: ANALYZED (RANGE SCAN) OF
                     'ENDORSE_DELEGATE_HIST_TEMP_IDX' (INDEX)
    451      INDEX   MODE: ANALYZED (RANGE SCAN) OF 'TA_SCLENDORSE_PK'
                 (INDEX (UNIQUE))
     21     TABLE ACCESS   MODE: ANALYZED (BY INDEX ROWID) OF
                'ENDORSE_ACTIVITY_TBL' (TABLE)
SQL ID: gwpkaabt9naxy Plan Hash: 2668568437
SELECT DISTINCT DE.WORKER_ID
FROM
ENDORSE_DELEGATE_HISTORY_V DE , ENDORSE_ACTIVITY_V EN ,
  WORKER_ACTIVITY_AUTH_V EA WHERE DE.WORKER_ID = EN.WORKER_ID AND
  EN.WORKER_ID = EA.WORKER_ID AND EN.START_DATE = :B2 AND EN.ENDORSE_STATUS =
  'N' AND EA.ACTIVITY_DATE >= EN.START_DATE AND EA.ACTIVITY_DATE <=
  EN.START_DATE + 13 AND EN.START_DATE <= DE.EXPIRATION_DATE AND
  EN.START_DATE + 13 >= DE.EFFECTIVE_DATE AND (DE.DEFAULT_ENDORSER = :B1 OR
  DE.TEMPORARY_DELEGATE = :B1 ) ORDER BY DE.WORKER_ID
call     count       cpu    elapsed       disk      query    current        rows
Parse        1      0.00       0.00          0          0          0           0
Execute      6      0.01       0.00          0          0          0           0
Fetch        6      0.01       0.01          0        700