HOW TO IMPORT HUNDREDS OF TEXT FILE TO DATABASE AS TABLE

Question

Hi,
I have hundreds of text files in my computer. Every text file includes records. I want to see these records in one table at the database. How can I do that?
thank you very much for help
ömer faruk akyüzlü
in Turkey

Answer 1

I have a standard template that my developers use for reading text files using External Tables . Each developer gets an external table to read in test data. The format the data in CSV format, but you could use others. The External Table points to a generic file name, such as "csv_data". They then just rename the file or create a link to it, depending on the OS.
My solution uses the Directory objects. The following can be put in a script and run passing the first argument as the developers name. It supports a csv file upto 15 columns, but you can expand it.
-- begin script
CREATE OR REPLACE DIRECTORY &1 as '/home/&1';
grant read on directory &1 to public;
alter session set current_schema=&1;
--drop table csv_data;
CREATE TABLE csv_data
col1 VARCHAR2(250),
col2 VARCHAR2(250),
col3 VARCHAR2(250),
col4 VARCHAR2(250),
col5 VARCHAR2(250),
col6 VARCHAR2(250),
col7 VARCHAR2(250),
col8 VARCHAR2(250),
col9 VARCHAR2(250),
col10 VARCHAR2(250),
col11 VARCHAR2(250),
col12 VARCHAR2(250),
col13 VARCHAR2(250),
col14 VARCHAR2(250),
col15 VARCHAR2(250)
ORGANIZATION EXTERNAL
( TYPE ORACLE_LOADER
DEFAULT DIRECTORY &1
ACCESS PARAMETERS
(RECORDS DELIMITED BY newline
NOBADFILE
NODISCARDFILE
NOLOGFILE
SKIP 0
FIELDS TERMINATED BY ","
OPTIONALLY ENCLOSED BY '"'
RTRIM
MISSING FIELD VALUES ARE NULL
REJECT ROWS WITH ALL NULL FIELDS
col1 CHAR, col2 char,col3 char,col4 char,col5 char,col6 char,col7 char,col8 char,col9 char,
col10 char,col11 char,col12 char,col13 char,col14 char,col15 char
LOCATION (&1:'csv_data')
REJECT LIMIT Unlimited
NOPARALLEL
NOMONITORING
--end script