Actually i am loading from the flat file to the table using sqlldr.

the flat file contains double quotes only.

my table desc is below..,

Name Null? Type
----------------------------------------- -------- -----------------
SES_ID NUMBER
TRANS_ID NUMBER
TRANS_ANALYSIS NUMBER
TRAN_NAME VARCHAR2(100)
RANK_1_F NUMBER
RANK_1_T NUMBER
T_TIME_O NUMBER
T_SINGLE_URL_TX_U VARCHAR2(500)
T_REPORT_OR NUMBER
T_TRANSACTION_DE VARCHAR2(500)
T_EXIST_IN_SCRIPT NUMBER
T_TEXT_CHECK_DATA VARCHAR2(100)
T_TEXT_CHECK_FLAG NUMBER
T_URL_USER VARCHAR2(100)
T_URL_PASS VARCHAR2(100)
T_URL_PASS_ETY NUMBER