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  #1 (permalink)  
Old March 8th, 2005, 11:35 AM
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Default code efficiency

I'm trying to figure out how to make my load process more efficient than running it through cursors, can anyone offer any suggestions on how I should go about this? See coding below, it selects from two different tables ent_aa and x1040_individual to load data into x1040_return, but it goes through a process of checks and initialization first, now I want to update records that are already loaded and insert new ones but the processing time is ridiculous I need help! I want to change the way it is being process but not sure what route to take, should I use CASE Statements?

PROCEDURE x1040_return_load (p_year IN NUMBER) IS

CURSOR ent_aa_cursor IS
  SELECT pssn_num
  FROM ifm_bld.ent_aa_stg
  WHERE tx_yr = p_year;

CURSOR x1040_individual_cur(ssn in varchar2, val_cd in varchar2, txyr in number, name_ctrl in varchar2) IS
    FROM x1040_individual
   WHERE act_ssn_num = ssn
     AND ssn_val_cd = val_cd
     AND tx_yr = txyr
     AND ssn_name_ctrl_txt = decode (val_cd, 0, ssn_name_ctrl_txt,
                                              1, ifm_utils.get_name_ctrl(val_cd,name_ctrl));

v_load_num NUMBER := 0;
v_row_count NUMBER := 0;
v_seq_num NUMBER := 0;
v_individual_id NUMBER := 0;
v_pssn_num VARCHAR2(9) := ' ';
v_sssn_num VARCHAR2(9) := '000000000';
v_act_sssn_num VARCHAR2(9) := ' ';
v_sssn_val_cd VARCHAR2(1) := '.';
v_sssn_name VARCHAR2(4) := ' ';
v_table_count NUMBER := 0;
v_update_count NUMBER := 0;
v_date_updated DATE := SYSDATE;
v_last_cycle_updated NUMBER(6) := '000000';
--Insert Table 1040_individual comment 'BEGIN' into Load Log Table
  SELECT load_num_seq.nextval
    INTO v_load_num
    FROM dual;
  INSERT INTO load_log
  VALUES (v_date_updated, v_load_num, p_year || ' SET X1040 Return cgen',

FOR ent_aa_rec in ent_aa_cursor LOOP
  -- Get Primary SSN's indiv_id

        v_individual_id := 0;
        v_pssn_num := '000000000';

  FOR indiv_rec in x1040_individual_cur(ent_aa_rec.pssn_num, ent_aa_rec.pssn_val_cd, ent_aa_rec.tx_yr, ent_aa_rec.PRIM_NAME_CTRL_TXT) LOOP
 v_individual_id := indiv_rec.individual_id;
        v_pssn_num := indiv_rec.ssn_num;
        END LOOP;

IF ent_aa_rec.sssn_num = '.........' THEN
        v_sssn_num := '000000000';
        v_act_sssn_num := '.........';
        v_sssn_val_cd := '1';
        v_sssn_name := '....';
ELSIF ent_aa_rec.flng_sts_cd = '2' THEN
 v_sssn_num := '000000000';
        v_sssn_val_cd := '1';
        v_sssn_name := nvl(ent_aa_rec.sec_name_ctrl_txt,' ');
        v_act_sssn_num := ent_aa_rec.SSSN_NUM;
  -- Get Secondary SSN's indiv_id
 FOR indiv_rec in x1040_individual_cur(ent_aa_rec.sssn_num, ent_aa_rec.sssn_val_cd, ent_aa_rec.tx_yr, ent_aa_rec.sec_name_ctrl_txt) LOOP
     v_sssn_num := indiv_rec.ssn_num;
     v_act_sssn_num := ent_aa_rec.SSSN_NUM;
     v_sssn_val_cd := ent_aa_rec.sssn_val_cd;
     v_sssn_name := ifm_utils.get_name_ctrl(ent_aa_rec.sssn_val_cd, ent_aa_rec.sec_name_ctrl_txt);
        v_sssn_num := ifm_utils.get_enc_ssn(ent_aa_rec.sssn_num);
        v_act_sssn_num := ent_aa_rec.sssn_num;
        v_sssn_val_cd := ent_aa_rec.sssn_val_cd;
        IF ent_aa_rec.sssn_val_cd = 0 AND
          ent_aa_rec.sec_name_ctrl_txt IS NULL THEN
           v_sssn_name := ' ';
            v_sssn_name := ifm_utils.get_name_ctrl(ent_aa_rec.sssn_val_cd, ent_aa_rec.sec_name_ctrl_txt);
        END IF;

SELECT last_cycle_updated
INTO v_last_cycle_updated
FROM cycle_updated;

  INSERT INTO x1040_return
         (individual_id, pssn_num, pssn_val_cd, tx_yr
         ,act_pssn_num, sssn_num,sssn_val_cd, ACT_SSSN_NUM, tx_prd_num
         ,cyc_orig_extract_num, CYC_UPDATED_NUM, PRIM_STRATUM_CD,wgt_num, WGT_5PCT_SRS_1040_NUM
         ,DATA_ASSMD_PRES_SCH_B_IND,sssn_name_ctrl_txt, date_created, flng_sts_cd)
  VALUES (v_individual_id, v_pssn_num, ent_aa_rec.pssn_val_cd, ent_aa_rec.tx_yr
         ,ent_aa_rec.pssn_num, v_sssn_num, v_sssn_val_cd, v_act_sssn_num, ent_aa_rec.tx_pd_num
         ,ent_aa_rec.cyc_orig_extract_num, ent_aa_rec.CYC_UPDATED_NUM
         ,ent_aa_rec.PRIMARY_STRATUM_CD, ent_aa_rec.weight
         ,ent_aa_rec.WGT_10PCT_SRS_SB_NUM, 0, 0, 0, v_sssn_name, sysdate, ent_aa_rec.flng_sts_cd);

IF ent_aa_rec.cyc_updated_num > v_last_cycle_updated
  UPDATE x1040_return
           SET cyc_orig_extract_num = ent_aa_rec.cyc_orig_extract_num
  ,wgt_num = ent_aa_rec.weight
  ,WGT_5PCT_SRS_1040_NUM = ent_aa_rec.WGT_5PCT_SRS_1040_NUM
  ,WGT_10PCT_SRS_SB_NUM = ent_aa_rec.WGT_10PCT_SRS_SB_NUM
  ,sssn_name_ctrl_txt = v_sssn_name
                ,date_updated = sysdate
  ,flng_sts_cd = ent_aa_rec.flng_sts_cd
         WHERE act_pssn_num = ent_aa_rec.pssn_num
         AND tx_yr = ent_aa_rec.tx_yr
         AND pssn_val_cd = ent_aa_rec.pssn_val_cd;
            UPDATE load_log SET status = 'FAILED'
           ,complete_time = SYSDATE
     ,error_stack = 'X1040 Return ERROR:'||','||ent_aa_rec.pssn_num||','||DBMS_UTILI TY.FORMAT_ERROR_STACK
     WHERE load_num = v_load_num
     AND load_step = p_year || 'X1040 Return Return Load - BEGIN TABLE';

  v_table_count := v_table_count + 1;
  v_row_count := v_row_count + 1;
  v_update_count := v_update_count + 1;

  --COMMIT every 1,000 rows
  --IF v_update_count = 1000 THEN
  -- v_update_count := 0;
  -- COMMIT;
  --END IF;


--Insert into Load Log Table the comment the process was completed
UPDATE load_log SET status = 'COMPLETE'
      ,complete_time = SYSDATE
      ,runtime = calc_runtime_func(start_time)
      ,table_rowcount = v_row_count
 WHERE load_num = v_load_num
   AND load_step = p_year || ' SET X1040 Return cgen';

--Insert into Load Log Table the comment the process was NOT completed
  v_row_count := SQL%ROWCOUNT;

  UPDATE load_log SET status = 'FAILED'
        ,complete_time = SYSDATE
        ,runtime = calc_runtime_func(start_time)
        ,table_rowcount = v_row_count
        ,error_stack = DBMS_UTILITY.FORMAT_ERROR_STACK
   WHERE load_num = v_load_num
     AND load_step = p_year || ' SET X1040 Return cgen';

END x1040_Return_load;

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  #2 (permalink)  
Old March 8th, 2005, 04:42 PM
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You could use a table variable or a temporary table; store the results there, have a identity RowID field, and then loop through each record individually.

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