Collection with bulk collect , statement is not executed..

Question

DECLARE
          CURSOR cur_upt IS SELECT ts.user_id, ts.lot_id, ts.ml_ac_no, ts.td_prs_dt, ts.unit_cost, ts.cost_basis
          FROM tb_xop_sharelot_frac_snap fs, tb_xop_sharelot ts
          WHERE fs.lot_id=ts.lot_id AND fs.user_id=ts.user_id;
TYPE tx_tab IS TABLE OF tb_xop_sharelot.user_id%TYPE;
ltab tx_tab;
TYPE tx_tab1 IS TABLE OF tb_xop_sharelot.lot_id%TYPE;
ltab1 tx_tab1;
TYPE tx_tab2 IS TABLE OF tb_xop_sharelot.ml_ac_no%TYPE;
ltab2 tx_tab2;
TYPE tx_tab3 IS TABLE OF tb_xop_sharelot.td_prs_dt%TYPE;
ltab3 tx_tab3;
TYPE tx_tab4 IS TABLE OF tb_xop_sharelot.unit_cost%TYPE;
ltab4 tx_tab4;
TYPE tx_tab5 IS TABLE OF tb_xop_sharelot.cost_basis%TYPE;
ltab5 tx_tab5;
BEGIN
          INSERT INTO tb_xop_sharelot_frac_snap (lot_id, jemq_num, lot_qy, activity_type, LOT_SL_CREATE_DT,
               LOT_SL_CLOSE_DT, lot_status, frac_recon, hist_flag, create_dt, user_id)
               (SELECT lot_id, jemq_num, lot_qy, activity_type, LOT_SL_CREATE_DT,
               LOT_SL_CLOSE_DT,lot_status, frac_recon, hist_flag, create_dt, user_id FROM tb_xop_sharelot_fraction);
          OPEN Cur_upt;
LOOP
          FETCH Cur_upt BULK COLLECT INTO ltab, ltab1, ltab2, ltab3, ltab4, ltab5 LIMIT 5000;
EXIT WHEN cur_upt%NOTFOUND;
          END LOOP;
          CLOSE cur_upt;
          FORALL i IN ltab.FIRST..ltab.LAST
UPDATE tb_xop_sharelot_frac_snap SET ml_ac_no=ltab2(i)/*, td_prs_dt=ltab3(i),
          unit_cost=ltab4(i), cost_basis=ltab5(i)*/ WHERE user_id=ltab(i) AND lot_id=ltab1(i);
          COMMIT;
EXCEPTION
WHEN OTHERS THEN
DBMS_OUTPUT.PUT_LINE(SQLCODE|| ' ' ||SQLERRM);
END;

Answer 1

This is the third question you have posted just putting one short subject and only posting code not formatted.
I suggest you to read SQL and PL/SQL FAQ and avoid posting your question in this way as they will be ignored.
Please:
a) post sample data
b) post your code formatted
i.e.:
{noformat}{noformat}
SELECT ...
{noformat}{noformat}
c) explain what problem you are facing in details (including oracle errors)
d) explain the logic you want to have
e) post your expected output.
Regards.
Al