Unload CLOB data to a flat file

Hi,
does anybody knows how to unload CLOB data to a flat file. Can u pl give a example. Is there any ulity in Oracle to unload data to a flat file. Whether we have to use the concatation operator for unloading the data to a flat file.
help??????
regards,
gopu

I don't know if there's an easy way, but you might want to try using the packages UTL_FILE and DBMS_LOB.
Hope that helps.

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I want to load data from a flat file, convert dates, numbers and some fields with custom logic (e.g. 0,1 into N,Y) to the correct format.
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thanks for your answers so far!
I gave them a thought and came up with two different alternatives:
Alternative 1
I load the data from the flat file into a staging table using sqlldr. I convert the data to the target format using sqlldr expressions.
The columns of the staging table have the target format (date, number).
The rows that cannot be loaded go into a bad file. I manually load the data from the bad file (without any conversion) into the error table.
Alternative 2
The columns of the staging table are all of type varchar2 regardless of the target format.
I define data rules for all columns that require a later conversion.
I load the data from the flat file into the staging table using external table or sqlldr without any data conversion.
The rows that cannot be loaded go automatically into the error table.
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Further, I would prefer using expressions in the mapping for converting the data.
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As far as I know I need the data quality option for using data rules, is that true?
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Otherwise I think I will go for alternative 1.
Thanks,
Carsten.

Sqlplus – spool data to a flat file

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Does any oracle expert here know why the sqlplus command could not spool all the data into a flat file at one time.
I have tried below command. It seems like every time I will get different file size :(
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set trim on
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For me, this is working. What exactly are you getting and what exactly are you expecting?
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#!/bin/ksh
TEMP_FILE_PATH=`pwd`
extract_file_prefix=emp
dbUser=t352104
dbPass=t352104
dbName=gen_dev
dataFile=${TEMP_FILE_PATH}/${extract_file_prefix}.dat
sqlplus -s $dbUser/$dbPass@$dbName <<EOF > $dataFile
set trims on
set trim on
set tab off
set linesize 7000
SET HEAD off AUTOTRACE OFF FEEDBACK off VERIFY off ECHO off SERVEROUTPUT off term off;
whenever sqlerror exit 173;
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FROM emp ;
exit
EOF
(t352104@svlipari[GEN]:/lem) $ ./test.ksh
(t352104@svlipari[GEN]:/lem) $ echo $?
0
(t352104@svlipari[GEN]:/lem) $ cat emp.dat
      7369 SMITH      CLERK           7902 17-DEC-80        800                    20
      7499 ALLEN      SALESMAN        7698 20-FEB-81       1600        300         30
      7521 WARD       SALESMAN        7698 22-FEB-81       1250        500         30
      7566 JONES      MANAGER         7839 02-APR-81       2975                    20
      7654 MARTIN     SALESMAN        7698 28-SEP-81       1250       1400         30
      7698 BLAKE      MANAGER         7839 01-MAY-81       2850                    30
      7782 CLARK      MANAGER         7839 09-JUN-81       2450                    10
      7788 SCOTT      ANALYST         7566 09-DEC-82       3000                    20
      7839 KING       PRESIDENT            17-NOV-81       5000                    10
      7844 TURNER     SALESMAN        7698 08-SEP-81       1500          0         30
      7876 ADAMS      CLERK           7788 12-JAN-83       1100                    20
      7900 JAMES      CLERK           7698 03-DEC-81        950                    30
      7902 FORD       ANALYST         7566 03-DEC-81       3000                    20
      7934 MILLER     CLERK           7782 23-JAN-82       1300                    10
(t352104@svlipari[GEN]:/lem) $

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I have a requirement where I have to upload the data from 2 flat files into 2 z tables(ZRB_HDR,ZRB_ITM).From the 1st flat file only data for few fields have to be uploaded into ztable(ZRB_HRD) .Fromthe 2nd flat file data for all the fields have to me uploaded into ztable(ZRB_ITM). How can I do this?
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hi,
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how to load data from a flat file which is there in the application server..

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Error Loading Data into a flat file

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Thanks
java.lang.Exception
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     at com.sunopsis.dwg.dbobj.SnpSessStep.treatSessStep(SnpSessStep.java)
     at com.sunopsis.dwg.dbobj.SnpSession.treatSession(SnpSession.java)
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     at com.sunopsis.dwg.cmd.g.y(g.java)
     at com.sunopsis.dwg.cmd.e.run(e.java)
     at java.lang.Thread.run(Unknown Source)

Figured it out, found similar post that stated changing the HEAP size
Increase the page size in odiparams.bat in the bin folder and restart Designer.
For eg:
set ODI_INIT_HEAP=128m
set ODI_MAX_HEAP=1024m

Loading Master Data from a Flat File

Hi Guru, I have flat files of different SAP tables (Transactional data tables and Master Data ), I want to upload this flat files to a DSO, my question is in the case of Master Data Files example SAP table USR03 ( User Address Data) in a Flat file format which is better to create a Master data text and attributes Datasource or create it as a transactional data Datasource to upload it to a DSO.

Hi
Master data datasource should be used to load master data like customer details. customer data is the master data which does not change frequently. customer infoobject may have some attributes like customer name, customer contact number, customer address, etc. we have to maintain these attributes and text data.
Transaction data is something which keeps changing very frequently like price of the material, sales, etc. for loading such data we go for transaction datasources.
As mentioned above too,the changes in the address are very rare, therefore youshould not use transactional datasource.
Regards, Rahul
Edited by: Rahul Pant on Feb 7, 2011 12:24 PM

Data from a Flat file int a Cube

Hi experts!
Just a quick one, could we load data from a flat file directly to an infocube?
Or we woud need to create a ODS to load that from the flat file there and later on form the ODS to the cube?
Thanks you very much for your time!!

Hi,
You can directly load the flat data into the info cube. This should not be a problem.
Create a flat file datasource according to the structure of the flat file. Create Transformations and DTP to the Cube.
Load the flat file data into the PSA and then DTP the request into the cube.
If the flat file load is a full load and one time load and data has to be deleted and loaded on the next load then above approach is fine.
But if your load is every day load and delta then it would be appropriate to have a DSO in between the data flow.
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Problem in the BDC program to upload the data from a flat file.

Hi,
I am required to write a BDC program to upload the data from a flat file. The conditions are as mentioned below:-
1) Selection Screen will be prompted to user and user needs to provide:- File Path on presentation server (with F4 help for this obligatory parameter) and File Separator e.g. @,#,$,%,... etc(fields in the file will be separated by using this special character) or fields may be separated by tab(tab delimited).
2) Finally after the data is uploaded, following messages need to be displayed:-
a) Total Number of records successfully uploaded.
b) Session Name
c) Number of Sessions created.
Problem is when each record is fetched from flat file, the record needs to be split into individual fields separated by delimiter or in case tab separated, then proceeding in usual manner.
It would be great if you provide me either the logic, pseudocode, or sample code for this BDC program.
Thanks,

Here is an example program, if you require the delimitor to be a TAB, then enter TAB on the selection screen, if you require the delimitor to be a comma, slash, pipe, whatever, then simply enter that value. This example is simply the uploading of the file, not the BDC, I assume that you know what to do once you have the data into the internal table.
REPORT zrich_0001.
TYPES: BEGIN OF ttab,
        rec TYPE string,
       END OF ttab.
TYPES: BEGIN OF tdat,
       fld1(10) TYPE c,
       fld2(10) TYPE c,
       fld3(10) TYPE c,
       fld4(10) TYPE c,
       END OF tdat.
DATA: itab TYPE TABLE OF ttab.
data: xtab like line of itab.
DATA: idat TYPE TABLE OF tdat.
data: xdat like line of idat.
DATA: file_str TYPE string.
DATA: delimitor TYPE string.
PARAMETERS: p_file TYPE localfile.
PARAMETERS: p_del(5) TYPE c.
AT SELECTION-SCREEN ON VALUE-REQUEST FOR p_file.
DATA: ifiletab TYPE filetable.
DATA: xfiletab LIKE LINE OF ifiletab.
DATA: rc TYPE i.
CALL METHOD cl_gui_frontend_services=>file_open_dialog
    CHANGING
      file_table = ifiletab
      rc         = rc.
READ TABLE ifiletab INTO xfiletab INDEX 1.
IF sy-subrc = 0.
    p_file = xfiletab-filename.
ENDIF.
START-OF-SELECTION.
TRANSLATE p_del TO UPPER CASE.
CASE p_del.
    WHEN 'TAB'.
      delimitor = cl_abap_char_utilities=>horizontal_tab.
    WHEN others.
      delimitor = p_del.
ENDCASE.
file_str = p_file.
CALL METHOD cl_gui_frontend_services=>gui_upload
    EXPORTING
      filename = file_str
    CHANGING
      data_tab = itab.
LOOP AT itab into xtab.
    CLEAR xdat.
    SPLIT xtab-rec AT delimitor INTO xdat-fld1
                                     xdat-fld2
                                     xdat-fld3
                                     xdat-fld4.
    APPEND xdat to idat.
ENDLOOP.
LOOP AT idat into xdat.
    WRITE:/ xdat-fld1, xdat-fld2, xdat-fld3, xdat-fld4.
ENDLOOP.
Regards,
Rich Heilman

Unload CLOB data to a flat file

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