Need help in tuning a procedure

Question

DECLARE
CURSOR Cur_sub_rp IS
SELECT A.SUB_ACCOUNT, B.PH_basic_srv,B.PH_Salesman,A.SUB_SSN
FROM STG_SUB_MASTER_MONTH_HISTORY A, STG_PHN_MASTER_MONTH_HISTORY
B
WHERE A.SUB_ACCOUNT = B.PH_ACCOUNT (+)
AND A.MONTH_ID = B.MONTH_ID ;
TYPE t_values_tab IS TABLE OF cur_sub_rp%rowtype ;
values_tab t_values_tab := t_values_tab() ;
BEGIN
OPEN Cur_sub_rp ;
LOOP
FETCH Cur_sub_rp BULK COLLECT INTO Values_tab
LIMIT 1000;
EXIT WHEN Cur_sub_rp%NOTFOUND ;
END LOOP ;
CLOSE Cur_sub_rp;
FORALL i IN VALUES_TAB.first..values_tab.last
INSERT INTO SUB_PHN_1 VALUES VALUES_TAB(i);
commit;
END;
The tables used here has 9 million records each.
The total process takes around 19 minutes.
Need your help in optimizing the process.

Answer 1

i have tried using
Create table as SELECT A.SUB_ACCOUNT,  B.PH_basic_srv,B.PH_Salesman,A.SUB_SSN
                    FROM STG_SUB_MASTER_MONTH_HISTORY A, STG_PHN_MASTER_MONTH_HISTORY
B
                    WHERE A.SUB_ACCOUNT = B.PH_ACCOUNT (+)
                    AND A.MONTH_ID = B.MONTH_ID (+);But still taking long time(apprx 15 min).
so used this...
help me in tuning the query in either of this.
DECLARE
CURSOR Cur_sub_rp IS
                SELECT A.SUB_ACCOUNT,  B.PH_basic_srv,B.PH_Salesman,A.SUB_SSN
                    FROM STG_SUB_MASTER_MONTH_HISTORY A, STG_PHN_MASTER_MONTH_HISTORY
B
                    WHERE A.SUB_ACCOUNT = B.PH_ACCOUNT (+)
                    AND A.MONTH_ID = B.MONTH_ID (+);
TYPE t_values_tab IS TABLE OF cur_sub_rp%rowtype ;
values_tab t_values_tab := t_values_tab()  ;
BEGIN
    OPEN Cur_sub_rp ;
    LOOP
        FETCH Cur_sub_rp BULK COLLECT INTO Values_tab
                                            LIMIT 1000;
        EXIT WHEN Cur_sub_rp%NOTFOUND ;
    END LOOP ;
    CLOSE Cur_sub_rp;
FORALL i IN VALUES_TAB.first..values_tab.last
INSERT INTO SUB_PHN_1 VALUES VALUES_TAB(i);
commit;
END;Message was edited by:
Vakeel
Message was edited by:
Vakeel