Posting date for Millions of records

Hi all

I need to do a validation of date (if the format is 'YYYYMMDDHH24MISS') in the oracle table that has millions of records. Currently, invalid format files are pushed into a separate table. I use a function and procedure that does this task, but it takes 1 min for 1 million files which is very expensive.

Kindly let me know if we have any other alternative that will give a better Performance? or refine bleow queries to make it efficient.

Function:
create or replace the FUNCTION VALIDATION1(PARAM IN VARCHAR2) RETURN VARCHAR2
AS
NUMBER1 NUMBER;
DATE1 DATE;
BEGIN
DATE1: = TO_DATE (PARAM, 'MMYYYYDDHH24MISS');
BACK TO 'Y '.
EXCEPTION
WHEN OTHERS THEN COME BACK 'N';
END;

Procedure:
create or replace PROCEDURE VALIDATE_DATE_INS AS
VAR1 VARCHAR2 (1);
CURSOR C1 IS SELECT ROW_ID, CUST_NEWJOINEE JOIN_DATE;
BEGIN
FOR LAST_UPDATE IN C1
LOOP
VAR1: = VALIDATION1 (LAST_UPDATE. JOIN_DATE);
VAR1 = 'N' IF THEN

Insert into Error_Tracker values (LAST_UPDATE. ROW_ID, 'Y', "Date Format mismatch");
END IF;
END LOOP;
COMMIT;
END VALIDATE_DATE_INS;

Thanks in advance,
RAM Mohan T

Try this

Replace the slider by Jet sql.

CREATE OR REPLACE FUNCTION VALIDATION1
(
   PARAM IN VARCHAR2
)
RETURN DATE
AS
   DATE1 DATE;
BEGIN
   DATE1 := TO_DATE(PARAM,'MMYYYYDDHH24MISS');
   RETURN DATE1;
EXCEPTION
   WHEN OTHERS THEN RETURN NULL;
END; 

CREATE OR REPLACE PROCEDURE VALIDATE_DATE_INS
AS
BEGIN
   Insert into Error_Tracker
   SELECT ROW_ID
         ,'Y'
         'Date Format Mismatch'
    FROM CUST_NEWJOINEE;
   WHERE VALIDATION1(JOIN_DATE) IS NULL 

   COMMIT;
END VALIDATE_DATE_INS;

Concerning
Arun

Tags: Database

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