Solve my Time stamp Problem in oracle

try this :

VALUES('1','1','1','1','1',TO_TIMESTAMP('02-02-2011 12:12:16.123456789','DD-MM-YYYY HH24:MI:SS.XFF'))

please correct this one it would throw invalid number in time stamp format

INSERT INTO com_ebpp_bill_reg_hst
(EBR_LV_CODE_ST
,EBR_BILLER_CODE_ST,
EBR_BILL_UPLOAD_TYPE_ST,
EBR_PAY_PRES_FLAG_ST,
EBR_ACTIVE_STATUS_FLAG_ST,
EBR_BUS_DATE_DT,
EBR_MAKER_ID_ST,
EBR_MAKER_DATETIME_DT,
EBR_CHECKER_ID_ST,
EBR_CHECKER_DATETIME_DT,
EBR_CHANNEL_SOURCE_ST,
EBR_RECRD_STATUS_ST,
EBR_MAKER_REMARKS_ST,
EBR_CHECKER_REMARKS_ST,
EBR_WORK_BR_ID_DO)
VALUES('1','1','1','1','1',to_timestamp(TO_CHAR('12-01-2010 22:12:12' ,'DD-MM-RRRR HH24:MI:SS'),'DD-MM-RRRR  HH24:MI:SS')

,
'1',
sysdate,
'1',sysdate,'y','y','y','y',1)

Don't put to_char on a string

TO_CHAR('12-01-2010 22:12:12'

'12-01-2010 22:12:12'  is already a string

Try this

VALUES('1','1','1','1','1',TO_DATE('02-02-2011 12:12:16','DD-MM-YYYY HH24:MI:SS'),

did you try what i suggested ?