Oracle SQL*Loader timestamp is error - oracle

Question

My control file is
ACCESS_TIME TERMINATED BY "" "TO_TIMESTAMP_TZ(:ACCESS_TIME,'YYYY/MM/DD HH24:MI:SS:FF TZR')"
Data file is
2012/11/12 15:18:00:765 CST
But when I run SQL*Loader to commit the data, in the database ACCESS_TIME does not match data file.
2012/11/13 05:18:00:765000000

Answer 1

if you're seeing that behaviour then the table column must be time stamp with local time zone and you are in Singapore etc (gmt +8) eg:
SQL> alter session set time_zone='+08:00';
Session altered.
SQL> create table test (access_time timestamp with local time zone);
Table created.
SQL> host sqlldr test/test control=/tmp/load.ctl log=/tmp/load.log
SQL*Loader: Release 11.2.0.1.0 - Production on Mon Nov 12 13:26:14 2012
Copyright (c) 1982, 2009, Oracle and/or its affiliates. All rights reserved.
Commit point reached - logical record count 2
SQL> select * from test;
ACCESS_TIME
---------------------------------------------------------------------------
13-NOV-12 05.18.00.765000
SQL> alter session set time_zone='-06:00';
Session altered.
SQL> select * from test;
ACCESS_TIME
---------------------------------------------------------------------------
12-NOV-12 15.18.00.765000
SQL> host cat /tmp/load.ctl
load data
infile *
replace
into table test
( ACCESS_TIME terminated by "" "TO_TIMESTAMP_TZ(:ACCESS_TIME,'YYYY/MM/DD HH24:MI:SS:FF TZR')"
)
begindata
2012/11/12 15:18:00:765 CST
if you want to preserve the CST part and not convert it then define your table as TIMESTAMP WITH TIME ZONE.
SQL> create table test (access_time timestamp with time zone);
Table created.
SQL> host sqlldr test/test control=/tmp/load.ctl log=/tmp/load.log
SQL*Loader: Release 11.2.0.1.0 - Production on Mon Nov 12 13:27:56 2012
Copyright (c) 1982, 2009, Oracle and/or its affiliates. All rights reserved.
Commit point reached - logical record count 2
SQL> select * from test;
ACCESS_TIME
---------------------------------------------------------------------------
12-NOV-12 15.18.00.765000 CST

Answer 2

Do a:
select SESSIONTIMEZONE from dual;
You insert your data in Central Standard Time. When you select the data it is probably displayed in your sessions (local) timezone.