Sql Loader with new column

Question

Hi All,
I have 20 text files which have large amount of data. I need to load these data into oracle db. Each of these text files having header as column name which are same in order. Now my manager ask me to load these data in database like that last column should be the file name, so that he can track from which text file data is from. Can anybody help me to do this using sql loader.
Example:
temp1.txt temp2.txt
col1 col2 col1 col2
118 'B' 100 'J'
245 'D' 110 'K'
160 'A' 200 'N'
Now i need to load data into a database table from these text file as-------
Table Name: Temp
col1 col2 FileName
118 'B' temp1
245 'D' temp1
160 'A' temp1
100 'J' temp2
110 'K' temp2
200 'N' temp2

Answer 1

you can load from multiple input files provided that the files use the same record format by repeating the INFILE clause. Here is an example:
load data
infile file1.dat
infile file2.dat
infile file3.dat
fields terminated by "," optionally enclosed by '"' trailing nullcols
( column1,
  column2 )