SQL Loader issue loading decimal negative numbers - oracle

Question

I have the following issue using SQL Loader to load a small table, my process populates a field which can be populated for possitive or negative decimal numbers, and the problem is that when the number is possitive, the process rounds with 2 positions, but if it's negative only use 1 position. I need 2 position, and this is the simple code:
UNRECOVERABLE LOAD DATA
TRUNCATE
INTO TABLE [SCHEMA].TABLE1
FIELDS TERMINATED BY '|'
OPTIONALLY ENCLOSED BY '"'
TRAILING NULLCOLS
(
FIELD1 "trim(:FIELD1 )"
)
Example:
Source: 12345,78 Target: 1234,78
Source: -12345,78 Target: -1234,8
Edit1: It just happend with number with 7 or more integer length (X < -1000000), but I can insert this numbers with regular insert instead of SQLLoader.
Edit2: I have noticed that it is not a problem with sql*loader because the .ctl is already wrong. This file is generated with python and SQL with this properties:
set colsep |
set headsep off
set pagesize 0
set trimspool on
set linesize 10000
set termout off
set feedback off
set arraysize 250
But I dont know where it is defined the lenght of each field, and this looks the error.

Answer 1

I'd say that you're not looking correctly. Data is, probably, stored OK, but you don't see it. Here's an example:
SQL> create table test (field1 number);
Table created.
SQL>
Control file:
load data
infile *
replace into table test
fields terminated by '|' trailing nullcols
(
field1
)
begindata
12345,78
-12345,78
987654321
-987654321
987654321,01234
-987654321,01234
111333444,887766
-112333444,887766
Loading session & the result:
SQL> $sqlldr scott/tiger#orcl control=test26.ctl log=test26.log
SQL*Loader: Release 11.2.0.2.0 - Production on Uto Kol 21 08:52:10 2018
Copyright (c) 1982, 2009, Oracle and/or its affiliates. All rights reserved.
Commit point reached - logical record count 7
Commit point reached - logical record count 8
SQL> select * from test;
FIELD1
----------
12345,78
-12345,78
987654321
-987654321
987654321
-987654321
111333445
-112333445
8 rows selected.
SQL>
Ooops! Seems to be wrong, eh? But, if you fix the column format ...
SQL> col field1 format 999g999g999g990d000000
SQL> select * from test;
FIELD1
-----------------------
12.345,780000
-12.345,780000
987.654.321,000000
-987.654.321,000000
987.654.321,012340
-987.654.321,012340
111.333.444,887766
-112.333.444,887766
8 rows selected.
SQL>
See? Everything is here.
I guess that, if you used a GUI, you wouldn't have such problems. The former sentence doesn't mean that you should NOT use SQL*Plus - on the contrary; just ... learn how to use it properly :)
[EDIT, after reading the comment]
It is SET NUMFORMAT you might be looking for:
SQL> select -12334.789123 from dual;
-12334.789123
-------------
-12334,789
SQL> set numformat 999g999g990d000000
SQL> select -12334.789123 from dual;
-12334.789123
-------------------
-12.334,789123
SQL>