Help with self join

Question

I need help to optimize this query - it's taking too long and the report times out - it jins to itself:
/* Formatted on 2005/03/01 14:12 (Formatter Plus v4.8.5) */
sELECT-- /*+ FIRST_ROWS */
--SELECT /*+ ROWID*/
aud.inv_id change_value_1, aud.inv_id change_value_2,
audit_inventory_reports_pkg.get_audit_inventory_desc
(aud.inv_id) item_modified,
x.trust_xfr_code original_value, aud.trust_xfr_code new_value,
aud.inf_app_user record_modified_by,
INITCAP (aud.inf_client_info) client_package_information,
aud.inf_module application, NULL record_created_on,
aud.inf_date_change record_modified_on,
DECODE (aud.inf_action_type,
'INSERT', 'TRUST TRANSFER ADDED',
'DELETE', 'TRUST TRANSFER REMOVED',
'TRUST TRANSFER MODIFIED'
) modification_type
FROM inf_p_inventory aud, inf_p_inventory x
WHERE aud.inf_action_type = 'UPDATE'
AND x.inv_id = aud.inv_id
AND x.trust_xfr_code != aud.trust_xfr_code
AND x.inf_action_type IN ('INSERT', 'UPDATE')
AND x.inf_id IN (SELECT MAX (y.inf_id)
FROM inf_p_inventory y
WHERE y.inv_id = aud.inv_id AND y.inf_id < aud.inf_id)
AND aud.inf_date_change BETWEEN TO_DATE ('20050201', 'YYYYMMDD')
AND TO_DATE ('20050228', 'YYYYMMDD') + .99999
and rownum<10
order by aud.inf_date_change
Plan:
Operation     Object Name     Rows     Bytes     Cost     Object Node     In/Out     PStart     PStop
SELECT STATEMENT Optimizer Mode=CHOOSE          1           10158
SORT ORDER BY          1      80      10151                     
COUNT STOPKEY                                        
FILTER                                        
HASH JOIN          1      80      10138                     
TABLE ACCESS BY INDEX ROWID     PAUDIT.INF_P_INVENTORY     24 K     1 M     4248                     
INDEX RANGE SCAN PAUDIT.INF_DTX_P_INV_IDX     74 K          200      
TABLE ACCESS FULL PAUDIT.INF_P_INVENTORY     1 M     19 M     5424      
SORT AGGREGATE          1      10                          TABLE ACCESS BY INDEX ROWID PAUDIT.INF_P_INVENTORY1 10 7           
INDEX RANGE SCAN PAUDIT.INF_PK_P_INV_IDX     4      3                     
Brand new statistics, good indexes:
CREATE TABLE INF_P_INVENTORY
INF_ID NUMBER(12) NOT NULL,
INF_ACTION_TYPE VARCHAR2(12 BYTE) NOT NULL,
INF_DATE_CHANGE DATE NOT NULL,
INF_ATLAS_PROC VARCHAR2(1 BYTE),
INF_ATTEMPTS NUMBER(12),
INF_CLIENT_INFO VARCHAR2(64 BYTE),
INF_DATE_XFRD DATE,
INF_DBL_DATE_XFRD DATE,
INF_APP_USER VARCHAR2(64 BYTE),
INF_DB_USER VARCHAR2(30 BYTE),
INF_DW_PROCESSED DATE,
INF_EXCEPTION_ID NUMBER(12),
INF_LOGON_TIME DATE,
INF_MACHINE VARCHAR2(64 BYTE),
INF_MODULE VARCHAR2(48 BYTE),
INF_OSUSER VARCHAR2(30 BYTE),
INF_PROGRAM VARCHAR2(48 BYTE),
INF_TERMINAL VARCHAR2(30 BYTE),
INV_ID NUMBER(12),
SMR_GLOBAL_NAME VARCHAR2(60 BYTE),
SMR_TIME_STAMP DATE,
PROJECT_ID VARCHAR2(4 BYTE),
UNIT_NUM VARCHAR2(6 BYTE),
SEASON_CODE VARCHAR2(3 BYTE),
SEASON_SEQ_NUM VARCHAR2(2 BYTE),
INV_STATUS_CODE VARCHAR2(3 BYTE),
ELEMENT VARCHAR2(3 BYTE),
ELEMENT_DESC VARCHAR2(35 BYTE),
OEB_CODE VARCHAR2(1 BYTE),
HOLD_CONTRACT VARCHAR2(1 BYTE),
CLUB_RELATED VARCHAR2(1 BYTE),
CLUB_USAGE_CREDITS NUMBER(12),
SELL_TYPE_CODE VARCHAR2(3 BYTE),
USAGE_TYPE_CODE VARCHAR2(3 BYTE),
MBR_CONTR_ID NUMBER(12),
HOLD_DATE DATE,
HOLD_EXP DATE,
EXP_DATE DATE,
HELD_BY_USER VARCHAR2(30 BYTE),
HOLD_REASON VARCHAR2(80 BYTE),
NUM_YRS_BOUGHT NUMBER(2),
ORIG_EXP_DATE DATE,
NUM_YRS_USED NUMBER(2),
FUTURE_EXP_DATE DATE,
APN_NUM VARCHAR2(20 BYTE),
RESALE_EXP_DATE DATE,
BOOK VARCHAR2(240 BYTE),
PAGE_NUM VARCHAR2(240 BYTE),
BOOK_PAGE_DATE DATE,
OEB_ACTIVE_DEACTIVE NUMBER(1),
GROUP_ID NUMBER(12),
STATE_INTERVAL_NUM VARCHAR2(20 BYTE),
STATE_UNIT_WK_NUM VARCHAR2(20 BYTE),
DATE_MODIFIED DATE,
MODIFIED_BY VARCHAR2(30 BYTE),
LAST_ASSESS_DATE DATE,
TRANSFER_PROJECT VARCHAR2(4 BYTE),
BATCH_ID NUMBER(12),
COURTHOUSE_CODE VARCHAR2(3 BYTE),
TRUST_XFR_CODE VARCHAR2(6 BYTE),
TRUST_XFR_CODE_REASON VARCHAR2(240 BYTE),
PTS_TRANSFER VARCHAR2(1 BYTE),
PTS_TRANSFER_DATE DATE,
TRANSFER_POINTS NUMBER,
TRANSFER_DATE DATE,
TRANSFER_BY VARCHAR2(30 BYTE),
TRANSFER_CODE VARCHAR2(1 BYTE),
LAST_ASSESSED_TO VARCHAR2(3 BYTE)
TABLESPACE xxx

Answer 1

how big is your inf_p_inventory table, i mean how many records does it has as compare to the other table?