SQL Loader or UTL_FILE , Which is better ??

Hello All,
In my system I have to Download the data from a file each day in some table.
The file is of fixed format. And the number of records (lines) in the file is not more than 1000 (say) each day.
I would like to know for such scenario what will be better to use, SQL Loader or UTL_FILE package to read the file?
DB - Oracle Database 10g on Linux platform.
Thanks & Regards,

Subject: Re: SQL Loader or UTL_FILE , Which is better ??
Hey,
My control file 'ATTENDANCE.ctl' is as follows
load data
infile 'C:\DATA\06012007.CAP'
badfile 'C:\DATA\atncap.bad'
append
into table NIS.atncap
COMP_CODE constant 'SP',
TXN_SRNO sequence(max,1),
TXN_DATE POSITION(05:12) date 'MM/DD/YYYY' ,
TXN_ATDATE POSITION(05:16) date 'MM/DD/YYYY HH24:MI',
TXN_EMPL POSITION(17:24) INTEGER EXTERNAL,
TXN_TIME POSITION(13:16) ,
CREATED_BY constant '---',
CREATED_DT sysdate,
MODIFIED_BY constant '---',
MODIFIED_DT sysdate,
TXN_FILE POSITION(05:12) INTEGER EXTERNAL,
TXN_INOUT POSITION(26:26) INTEGER EXTERNAL
and sample data from my file which is to be loaded is
CC000601200707300025831201FF09D071
CC000601200708330025836601FF09D17F
CC000601200710260025830001FF09D271
CC001201200718480025836201FF09D374
CC000601200719100025836601FF09D47B
which contains some flags, date, in/out times, employee code etc. and the positions of all the fields is fixed. The file is generated on daily basis with system date as the file name.
i.e. above data is from file '06012007.CAP'. We can easily see the date field is at positions 05 to 12 in the file.
So, for this purpose each time I have to update the control file for 'infile' parameter.
Thats what I said in my second post.
Message was edited by:
Abhijit Deshmukh

Similar Messages

Using SQL*Loader and UTL_FILE to load and unload large files(i.e PDF,DOCs)

Problem : Load PDF or similiar files( stored at operating system) into an oracle table using SQl*Loader .
and than Unload the files back from oracle tables to prevoius format.
I 've used SQL*LOADER .... " sqlldr " command as :
" sqlldr scott/[email protected] control=c:\sqlldr\control.ctl log=c:\any.txt "
Control file is written as :
LOAD DATA
INFILE 'c:\sqlldr\r_sqlldr.txt'
REPLACE
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Fields terminated by ','
id sequence (max,1) ,
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data LOBFILE(fname) terminated by EOF )
It loads files ( Pdf, Image and more...) that are mentioned in file r_sqlldr.txt into oracle table r_sqlldr
Text file ( used as source ) is written as :
c:\kalam.pdf,
c:\CTSlogo1.bmp
c:\any1.txt
after this load ....i used UTL_FILE to unload data and write procedure like ...
CREATE OR REPLACE PROCEDURE R_UTL AS
l_file UTL_FILE.FILE_TYPE;
l_buffer RAW(32767);
l_amount BINARY_INTEGER ;
l_pos INTEGER := 1;
l_blob BLOB;
l_blob_len INTEGER;
BEGIN
SELECT data
INTO l_blob
FROM r_sqlldr
where id= 1;
l_blob_len := DBMS_LOB.GETLENGTH(l_blob);
DBMS_OUTPUT.PUT_LINE('blob length : ' || l_blob_len);
IF (l_blob_len < 32767) THEN
l_amount :=l_blob_len;
ELSE
l_amount := 32767;
END IF;
DBMS_LOB.OPEN(l_blob, DBMS_LOB.LOB_READONLY);
l_file := UTL_FILE.FOPEN('DBDIR1','Kalam_out.pdf','w', 32767);
DBMS_OUTPUT.PUT_LINE('File opened');
WHILE l_pos < l_blob_len LOOP
DBMS_LOB.READ (l_blob, l_amount, l_pos, l_buffer);
DBMS_OUTPUT.PUT_LINE('Blob read');
l_pos := l_pos + l_amount;
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DBMS_OUTPUT.PUT_LINE('writing to file');
UTL_FILE.FFLUSH(l_file);
UTL_FILE.NEW_LINE(l_file);
END LOOP;
UTL_FILE.FFLUSH(l_file);
UTL_FILE.FCLOSE(l_file);
DBMS_OUTPUT.PUT_LINE('File closed');
DBMS_LOB.CLOSE(l_blob);
EXCEPTION
WHEN OTHERS THEN
IF UTL_FILE.IS_OPEN(l_file) THEN
UTL_FILE.FCLOSE(l_file);
END IF;
DBMS_OUTPUT.PUT_LINE('Its working at last');
END R_UTL;
This loads data from r_sqlldr table (BOLBS) to files on operating system ,,,
-> Same procedure with minor changes is used to unload other similar files like Images and text files.
In above example : Loading : 3 files 1) Kalam.pdf 2) CTSlogo1.bmp 3) any1.txt are loaded into oracle table r_sqlldr 's 3 rows respectively.
file names into fname column and corresponding data into data ( BLOB) column.
Unload : And than these files are loaded back into their previous format to operating system using UTL_FILE feature of oracle.
so PROBLEM IS : Actual capacity (size ) of these files is getting unloaded back but with quality decreased. And PDF file doesnt even view its data. means size is almot equal to source file but data are lost when i open it.....
and for images .... imgaes are getting loaded an unloaded but with colors changed ....
Also features ( like FFLUSH ) of Oracle 've been used but it never worked
ANY SUGGESTIONS OR aLTERNATE SOLUTION TO LOAD AND UNLOAD PDFs through Oracle ARE REQUESTED.
------------------------------------------------------------------------------------------------------------------------

Thanks Justin ...for a quick response ...
well ... i am loading data into BLOB only and using SQL*Loader ...
I've never used dbms_lob.loadFromFile to do the loads ...
i 've opend a file on network and than used dbms_lob.read and
UTL_FILE.PUT_RAW to read and write data into target file.
actually ...my process is working fine with text files but not with PDF and IMAGES ...
and your doubt of ..."Is the data the proper length after reading it in?" ..m not getting wat r you asking ...but ... i think regarding data length ..there is no problem... except ... source PDF length is 90.4 kb ..and Target is 90.8 kb..
thats it...
So Request u to add some more help ......or should i provide some more details ??

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Regards.
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To expand on Aron's answer....
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;)

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<NEW/ , 7779>
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Hi,
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Actually the format of the is something like
#10#......... <<header record>>
#20#...... <<body record>>
#20# <<body record>>
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APPEND
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control file
load data
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BADFILE 'F:\dumy.BAD'
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OPTIONALLY ENCLOSED BY '"'
TRAILING NULLCOLS
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item varchar2(50))
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Here is something working with Oracle XE on Windows. All files are in the same directory C:\TMP and all commands are also run from C:\TMP:
c:\tmp>type dumy.sql
set echo on
select * from v$version;
drop table dumy purge;
create table dumy
id number,
init_date date,
final_date date,
item varchar2(50)
exit
c:\tmp>type dumy.ctl
load data
infile 'C:\tmp\dumy.dat'
BADFILE 'C:\tmp\dumy.BAD'
DISCARDFILE 'C:\tmp\dumy.DSC'
APPEND
INTO TABLE dumy
FIELDS TERMINATED BY ','
OPTIONALLY ENCLOSED BY '"'
TRAILING NULLCOLS
id integer external,
init_date date "mm-dd-yyyy hh24:mi:ss",
final_date date "mm-dd-yyyy hh24:mi:ss",
item char
c:\tmp>type dumy.dat
1,12/22/2009 0:00:00,12/29/2009 0:00:00,"BRUSH"
2,12/22/2009 0:00:00,12/27/2009 0:00:00,"COMB"
c:\tmp>sqlplus hr/hr @dumy
SQL*Plus: Release 10.2.0.1.0 - Production on Sat Mar 13 10:40:54 2010
Copyright (c) 1982, 2005, Oracle. All rights reserved.
Connected to:
Oracle Database 10g Express Edition Release 10.2.0.1.0 - Production
SQL> select * from v$version;
BANNER
Oracle Database 10g Express Edition Release 10.2.0.1.0 - Product
PL/SQL Release 10.2.0.1.0 - Production
CORE    10.2.0.1.0      Production
TNS for 32-bit Windows: Version 10.2.0.1.0 - Production
NLSRTL Version 10.2.0.1.0 - Production
SQL> drop table dumy purge;
Table dropped.
SQL>
SQL> create table dumy
2 (
3 id number,
4 init_date date,
5 final_date date,
6 item varchar2(50)
7 );
Table created.
SQL>
SQL> exit
Disconnected from Oracle Database 10g Express Edition Release 10.2.0.1.0 - Prod
ction
c:\tmp>sqlldr hr/hr control=dumy.ctl
SQL*Loader: Release 10.2.0.1.0 - Production on Sat Mar 13 10:41:00 2010
Copyright (c) 1982, 2005, Oracle. All rights reserved.
Commit point reached - logical record count 1
Commit point reached - logical record count 2
c:\tmp>type dumy.log
SQL*Loader: Release 10.2.0.1.0 - Production on Sat Mar 13 10:41:00 2010
Copyright (c) 1982, 2005, Oracle. All rights reserved.
Control File:   dumy.ctl
Data File:      C:\tmp\dumy.dat
Bad File:     C:\tmp\dumy.BAD
Discard File: C:\tmp\dumy.DSC
(Allow all discards)
Number to load: ALL
Number to skip: 0
Errors allowed: 50
Bind array:     64 rows, maximum of 256000 bytes
Continuation:    none specified
Path used:      Conventional
Table DUMY, loaded from every logical record.
Insert option in effect for this table: APPEND
TRAILING NULLCOLS option in effect
   Column Name                  Position   Len Term Encl Datatype
ID                                  FIRST     *   , O(") CHARACTER
INIT_DATE                            NEXT     *   , O(") DATE mm-dd-yyyy hh24:
i:ss
FINAL_DATE                           NEXT     *   , O(") DATE mm-dd-yyyy hh24:
i:ss
ITEM                                 NEXT     *   , O(") CHARACTER
Table DUMY:
2 Rows successfully loaded.
0 Rows not loaded due to data errors.
0 Rows not loaded because all WHEN clauses were failed.
0 Rows not loaded because all fields were null.
Space allocated for bind array:                  66048 bytes(64 rows)
Read   buffer bytes: 1048576
Total logical records skipped:          0
Total logical records read:             2
Total logical records rejected:         0
Total logical records discarded:        0
Run began on Sat Mar 13 10:41:00 2010
Run ended on Sat Mar 13 10:41:01 2010
Elapsed time was:     00:00:00.89
CPU time was:         00:00:00.06
{code}
Do not use VARCHAR SQL*Loader data type which is not a portable data type but use CHAR instead.
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Sql loader fail to load

Hi,
i'm getting a very strange issue with sql loader. i want expert advice how to look into this matter and solve this problem. our application use sql loader to load text file into table. but sometime it reject the record and mark it bad. although those records are not actually bad. when i load them again it loaded without any error. . why sql loader reject them in first load and load successfully in next turn with same control file and data . anybody guide me how to investigate this issue. when sql loader rejects the row it through the error in log file
Record 23894: Rejected - Error on table GN_FILE_DATA_TABLE.
ORA-00604: error occurred at recursive SQL level 1
ORA-01861: literal does not match format string
Table GN_FILE_DATA_TABLE:
53009 Rows successfully loaded.
41827 Rows not loaded due to data errors.
0 Rows not loaded because all WHEN clauses were failed.
0 Rows not loaded because all fields were null.
Bind array size not used in direct path.
Column array rows :    5000
Stream buffer bytes: 256000
Read   buffer bytes: 1048576
Total logical records skipped:          1
Total logical records read:         94836
Total logical records rejected:     41827
Total logical records discarded:        0
Total stream buffers loaded by SQL*Loader main thread:    41867
Total stream buffers loaded by SQL*Loader load thread:      195
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Run ended on Tue May 29 04:31:14 2012
Elapsed time was:     00:00:44.34
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im using oracle version is 11g r2 and os is win 2008 server,loading data from remote server.
any idea?

It is very difficult to resolve a problem which can not be seen.it is true becoz i did not get any error
To get 'expert advice' you would need to do what you could have done yourself:i have spend almost 5 five hour before putting question here
compare and/or post the sql*loader control file (which we are not to see)i have mentioned in my post that i used same control file for both. bu jsut changing the name of input file in control file
and to look up the error message onlinecould you plz let me know which error should i look for online?
what i did before putting question here. i have merge the both bad and loaded file again and load it separately. both load remain successful.

Sql Loader Vs External table? Which one is preffered?

Hello guru,
We trying to load the data into about 160 tables. Here are the following things we are doing currently,
1. We get the flat file in .txt format
2. We are writing the control file for each flat file for thier respective tables
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I was wondering if this process is cumbersome, and i m not sure if external table could be simple in loading the tables compared to what we are doing ?And i have not used external tables, so wanted to know which on eis better ? So any idea is greatly appriciated !
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Thanks for you reply justin !
I found the below example for loading the data into external table...
CREATE OR REPLACE DIRECTORY dat_dir AS 'C:\Oradata\Data';
CREATE OR REPLACE DIRECTORY log_dir AS 'C:\Oradata\Log';
CREATE OR REPLACE DIRECTORY bad_dir AS 'C:\Oradata\Bad';
GRANT READ ON DIRECTORY dat_dir TO scott;
GRANT WRITE ON DIRECTORY log_dir TO scott;
GRANT WRITE ON DIRECTORY bad_dir TO scott;
CREATE TABLE revext (person      VARCHAR2(20),
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                     rev_feb     NUMBER(4),
                     rev_mar     NUMBER(4),
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                     rev_mai     NUMBER(4),
                     rev_jun     NUMBER(4),
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                     rev_aug     NUMBER(4),
                     rev_sep     NUMBER(4),
                     rev_oct     NUMBER(4),
                     rev_nov     NUMBER(4),
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ORGANIZATION EXTERNAL
   TYPE ORACLE_LOADER
   DEFAULT DIRECTORY dat_dir
   ACCESS PARAMETERS
     records delimited by newline
     badfile bad_dir:'revext%a_%p.bad'
     logfile log_dir:'revext%a_%p.log'
     fields terminated by ','
     missing field values are null
     ( person,
       rev_jan,
       rev_feb,
       rev_mar,
       rev_apr,
       rev_mai,
       rev_jun,
       rev_jul,
       rev_aug,
       rev_sep,
       rev_oct,
       rev_nov,
       rev_dez
   LOCATION ('revext.dat')
PARALLEL 4
REJECT LIMIT UNLIMITED;
CREATE TABLE revenue (
    person       VARCHAR2(20),
    month        VARCHAR2(3),
    revenue      NUMBER,
    CONSTRAINT revenue_pk PRIMARY KEY (person,month));
INSERT INTO revenue (person,month,revenue)
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1119Smith      01/01/1982AXYZ corporation xyz corp
1111collen      01/01/1990AABC corporation abc corp
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INTO TABLE "XYZ_tbl"
   ID                     POSITION(01:05)        CHAR                  "DECODE(RTRIM(:ID), NULL, 'NA', :ID)"       ,
   Name                POSITION(06:15)        CHAR                  "DECODE(RTRIM(:NAME), NULL, 'NA', :Name)"   ,
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My question is, can i use the options like NULLIF/ DECODE or changing datatypes when loading or functions like REPLACE / TO_DATE in External tables ? Any idea? Any example code or SQL will great
Thank you so much!

Sql * loader/Utl_file

Hi all,
As i know that both the UTL_FILE package and SQL* Loader are used to Load the flat file data into Apps Table.
My question is
1) Which one is the Best Method to use.
2) Advantages and disadvantages by using UTL_FILE and SQL* LOADER ;
Thanks In Advance
Goutham Konduru

Triple posting
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UTL_FILE package and SQL* Loader

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We are building an ASP.NET app that will be running on Microsoft Cloud which I think is the new name for Windows Azure. We're expecting this app to have many simultaneous users and want to make sure that we provide excellent performance to end users.
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hello,
SQL Database using shared resources on the Microsft data centre. Microsoft balance the resource usage of SQL Database so that no one application continuously dominates any resource.You can try the
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Regards,
Fanny Liu
If you have any feedback on our support, please click here.
Fanny Liu
TechNet Community Support

SQL*Loader options - which of the two is faster?

Hi, I am loading data into a staging table, using sqlldr. There are no indexes, and the table can be truncated.
the number of rows is known prior to the call, so i can set rows=...
it is a fixed size CHAR/INTEGER record of around 100 bytes.
Oracle is 10g.
Now I am getting following sqlldr warning:
SQL*Loader-281: Warning: ROWS parameter ignored in parallel mode.
Cause: Specifying save points using the ROWS parameter is
not supported for parallel loads.
Action: Remove the ROWS parameter from the command-line
arguments or specify a non-parallel direct load to have save
points performed.
Hence my question is, which of the two is faster?
I could either:
- trigger a direct load with TRUNCATE in the control file, and rows=<total number of rows>
or
- truncate table before loading, trigger a parallel load, APPEND, and give sqlldr potentially separate files in the correct parallellism that it can handle (so, e.g., 16 small files)
thanks
Arne

Hi,
1. Go to WAD.
2. Open any web template ( Search for * analysis )
3. Select one template .
4. Save as ..new name
5. In the data provider change the data provider name and change the report name.
6. test it .
5. If you want to chane the layout and all , go to DHTML code and change as per your requirement .
6. You can directly publish it from Query also ..it is fast .This will directly attach to your portAL.
Regards
Nilesh

Using SQL Loader in more than one table

Hi all,
I have a new question for those who have used SQL Loader. I
have never used it and I just know that I need a control file to
tell SQL Loader what is my flat file layout and what table the
information goes to. My problem is: my flat file has information
that goes to two tables in my schema. Those files are very big
(aprox 280Mb) and I would like to read them just once. Can I do
this with SQL Loader?
Other question, is that the fastest way to import data from
flat files becouse I am using PERL and it takes aprox. 9 hours
to import 10 of those files. I could use UTL_FILE to read it but
I heard that SQL Loader was better.
Thanks for your cooperation
(Robocop)
Marcelo Lopes
Rio de Janeiro - Brazil

SQL*Loader is the fastest way to load, particularly in direct parallel mode, and can certainly load to multiple tables.
>
My advice would be to have a look at the examples given in the Oracle Utilities guide, there is one for loading to multiple
tables, which I have pasted below.
>
-- Loads EMP records from first 23 characters
-- Creates and loads PROJ records for each PROJNO listed
-- for each employee
LOAD DATA
INFILE ’ulcase5.dat’
BADFILE ’ulcase5.bad’
DISCARDFILE ’ulcase5.dsc’
REPLACE
INTO TABLE emp
(empno POSITION(1:4) INTEGER EXTERNAL,
ename POSITION(6:15) CHAR,
deptno POSITION(17:18) CHAR,
mgr POSITION(20:23) INTEGER EXTERNAL)
INTO TABLE proj
-- PROJ has two columns, both not null: EMPNO and PROJNO
WHEN projno != ’ ’
(empno POSITION(1:4) INTEGER EXTERNAL,
projno POSITION(25:27) INTEGER EXTERNAL) -- 1st proj
INTO TABLE proj
WHEN projno != ’ ’
(empno POSITION(1:4) INTEGER EXTERNAL,
projno POSITION(29:31 INTEGER EXTERNAL) -- 2nd proj
INTO TABLE proj
WHEN projno != ’ ’
(empno POSITION(1:4) INTEGER EXTERNAL,
projno POSITION(33:35) INTEGER EXTERNAL) -- 3rd proj
see the documentation for a complete explanation of the configuration.
Thanks, I will read it.

Decode Not working in sql loader

I had a requirement of loading flatfile into staging table using SQL Loader, One of the columns in the the Flat file is having values FALSE or TRUE and my requirement is that I load 0 for FALSE and 1 for TRUE which can be achieved by simple DECODE function...I did use decode and tried to load several times but did not work. What might be the problem
LOAD DATA
INFILE 'sql_4ODS.txt'
BADFILE 'SQL_4ODS.badtxt'
APPEND
INTO TABLE members
FIELDS TERMINATED BY "|"
( Person_ID,
FNAME,
LNAME,
Contact,
status "decode(:status, 'TRUE', '1','FALSE','0')"
I did try putting a trim as well as SUBSTR but did not work....the cloumn just doent get any values in the output (just null or say free space)
Any help would be great.....

Hello user8937215.
Please provide a create table statement and a sample of data file contents. I would expect DECODE or CASE to work based on the information provided.
Cheers,
Luke
Please mark the answer as helpful or answered if it is so. If not, provide additional details.
Always try to provide create table and insert table statements to help the forum members help you better.

SQL Loader or UTL_FILE , Which is better ??

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