Update on a Table is Slow After a New Trigger is Applied on Table.

Question

Hi All,
Here is the situation:
1. Table A - we have INSURANCE Records. If we have to cancel Insurance for an agent we have to update cancellation_date &
INS_Flag sysdate & 'N' respectively. It is having thousands of records.
- > Every time we update a record with cancellation_date & INS_Flag there are two other tables which are updating using
trigger.
- > For each record updated in Table A we have to terminate the existing contract in Table B and set the INS_flag to N in third
Table C.
2. Table B - It is the primary table for all the INSURANCE contracts. so we have to terminate existing contracts for those agent who are
having cancellation_date & INS_Flag in table A.
3. Table C - It is having all the basic contracts with a flag for INSURANCE Contracts. If a agent is having a flag as Y in this table must have a
INSURANCE contract in Table B.
Now We are having a simple after update trigger on TABLE A which will update table B & Table C accordingly for each row.
We are having Table A so that we can synchronize Oracle Apps Database & Oracle Database for deverlopers.
Before trigger - Update on table A was fast but after implementing the trigger it takes 4-5 mins. for 10 records update in table A.
There are several indexes on Table A as well( including several functional indexes ).
Oracle Database :
BANNER
Oracle Database 10g Enterprise Edition Release 10.2.0.3.0 - 64bi
PL/SQL Release 10.2.0.3.0 - Production
CORE 10.2.0.3.0 Production
TNS for Solaris: Version 10.2.0.3.0 - Production
NLSRTL Version 10.2.0.3.0 - Production
Please help me How can I make the update faster.
If it is required I will post the trigger code as well.
Many thanks in advance.
Edited by: Kamal Sharma on Jun 23, 2010 4:10 PM

Answer 1

Here Table A = TB_CMA063_NETONE_STAGE_DATA
Table B = TB_30.REAL_ESTATE_AGENT_NUM
Table C = TB_CMA009_SUPRA_RE_AGNT_CONT
CREATE OR REPLACE TRIGGER CMADBA.TR_CMA003_ALTERINS_ON_FLG_UPD
AFTER UPDATE
ON CMADBA.TB_CMA063_NETONE_STAGE_DATA
REFERENCING NEW AS New OLD AS Old
FOR EACH ROW
DECLARE
    g_exception_id      TB_CMA089_CMA_APPS_EXCEPTION.EXCEPTION_ID%Type;
    v_msg               varchar2(200);
    v_status            varchar2(10);
    l_cmn               NUMBER;
    l_board_cmn         NUMBER;
BEGIN
    SELECT CUSTOMER_MASTER_NUM INTO l_board_cmn FROM TB_CMA005_CUSTOMER_MASTER 
    WHERE IS_REAL_ESTATE_BOARD_FLG='Y'
    AND UPPER(RE_NETONE_NAM) = UPPER(:new.IR_INSTALL_SITE_NAM);
    IF :new.IR_INSURANCE_FLG = 'N' THEN
        BEGIN
        -- CANCEL Table 30 record for this agent
        UPDATE TB_CMA030_RE_AGENT_INS_PR_BIL TB_30
           SET TB_30.cancellation_dt = SYSDATE,
               TB_30.RECORD_UPDATE_FLG = 'Y'
         WHERE TB_30.REAL_ESTATE_AGENT_NUM = :new.IR_AGENT_ID_NAM
           AND CANCELLATION_DT IS NULL          
           AND CUSTOMER_MASTER_NUM = l_board_cmn;
            -- UPDATE TABLE 9 RUF to Y so that Contract API would process this agent in next run
            UPDATE TB_CMA009_SUPRA_RE_AGNT_CONT
            SET RECORD_UPDATE_FLG='Y'
            WHERE REAL_ESTATE_AGENT_NUM = :new.IR_AGENT_ID_NAM
                AND CANCELLATION_DT IS NULL
                AND CUSTOMER_MASTER_NUM = l_board_cmn;
        END;          
    ELSIF :new.IR_INSURANCE_FLG = 'Y' THEN
        BEGIN
            INSERT INTO TB_CMA030_RE_AGENT_INS_PR_BIL
                (BILL_FREQ_UNIT_CD,CUSTOMER_MASTER_NUM,SERIAL_NUM,REAL_ESTATE_AGENT_NUM,REAL_ESTATE_BOARD_NUM,
                PRODUCT_NAM,  SERVICE_TYPE_NAM,  LEASE_TYPE_NAM,  CONT_START_DT, RE_AGENT_CUSTOMER_MASTER_NUM,
                RE_AGENT_CONT_START_DT, INS_BILL_FREQ_UNIT_CD,
                CONT_END_DT, RECORD_UPDATE_FLG, INS_AGENT_CONT_START_DT)
            SELECT DISTINCT 'AN', TB009.CUSTOMER_MASTER_NUM, TB009.SERIAL_NUM,
                TB009.REAL_ESTATE_AGENT_NUM, TB009.REAL_ESTATE_BOARD_NUM, TB009.PRODUCT_NAM, 'INS',
                TB009.LEASE_TYPE_NAM, TB009.CONT_START_DT, TB009.RE_AGENT_CUSTOMER_MASTER_NUM, TB009.RE_AGENT_CONT_START_DT,
                TB009.BILL_FREQ_UNIT_CD, TB009.CONT_END_DT, 'Y', TRUNC(SYSDATE)
            FROM TB_CMA009_SUPRA_RE_AGNT_CONT TB009
            WHERE TB009.CUSTOMER_MASTER_NUM = l_board_cmn
            AND TB009.CANCELLATION_DT       IS NULL
            AND TB009.IS_TRAINING_KEY_FLG   = 'N'
            AND TB009.REAL_ESTATE_AGENT_NUM =  :new.IR_AGENT_ID_NAM
            AND TB009.product_nam           IN ('AKY','DKY')
           and not exists
              (select 'x'
                 from tb_cma030_re_agent_ins_pr_bil tb030
                where tb030.customer_master_num   = tb009.customer_master_num
                  and tb030.real_estate_agent_num = tb009.real_estate_agent_num
                  and tb030.serial_num            = tb009.serial_num
                  and tb030.ins_bill_freq_unit_cd = tb009.bill_freq_unit_cd
                  and tb030.product_nam           = tb009.product_nam);
            -- UPDATE TABLE 9 RUF to Y so that Contract API would process this agent in next run
            UPDATE TB_CMA009_SUPRA_RE_AGNT_CONT
            SET RECORD_UPDATE_FLG='Y', AGENT_KEY_INS_FLG='Y'
            WHERE REAL_ESTATE_AGENT_NUM = :new.IR_AGENT_ID_NAM
                AND CANCELLATION_DT IS NULL
                AND CUSTOMER_MASTER_NUM = l_board_cmn;
        END;
    END IF;   
EXCEPTION
    WHEN OTHERS THEN          
        pc_cma024_batchjob.sp_cma025_log_err(l_board_cmn
                                            ,'UPDATE_TB63_TRIGGER'
                                            ,'TRIGGER-TR_CMA003_ALTERINS_ON_FLG_UPD'
                                            ,sqlcode
                                            ,sqlerrm,
                                            'An error occurred when Table 63 trigger tried to cancel/create Table 30 record for Agent ' || :new.IR_AGENT_ID_NAM);
End;
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