Learning Oracle Database will help Oracle programming

Dear All , Hi
did learning Oracle9i Database help in better understanding of Oracle Programming? pls. reply. i thank you all
regards,
Khalil

Hi Khalil,
Not sure what programming language you want to learn about.
If you are referring to sql and pl/sql Oracle 9i would serve you fine.
If you are referring to Oracle Data Mining APIs (java in particular), I would just note that they have changed significantly but you could still learn from using them.
Thanks, Mark

Similar Messages

Any programming language is required to learn oracle

Hi,
Could you pls advice me that do we learn any programming languange before learning oracle and work on that? with out any programming cannot we learn oracle?? bcz i am very intereste to learn oracle but i dont know any programming language. pls advice

First of all, you might want to consider that Oracle is the world's largest 'enterprise software' company, with many many many products. Therefore it would be useful to define the context - which products are you thinking about when you ask such a question.
Second, as others have pointed out, you will get a better answer when asking in an 'in-context' forum.
For example, if you are talking about databases, you might ask in the Database forum and find out that the primary languages are SQL, PL/SQL and Java (in that order) and secondary languages can include PERL, PHP, HTTP, and so on. However, if you are asking about Oracle Portal in the App Server forums, you would finf d out you could be quite happy with HTTP and Javascript. JDeveloper, as a Java IDE discussed in the development tools forum, encourages you to know Java but also be comfortable with JSP. SOA, in the SOA forum, encourages understanding of BPEL (yes, it is a language) as well as XML and Web Services.
You could, however, use this forum - or the Oracle Wiki - to help you understand what area you are interested in so you could ask in the right forums. <g>

Newbie Trying to restore Oracle database. please help

Hi All,
I am a newbie who is trying to restore Oracle database, I currently use RMAN to backup the database, but the database needs to be restored onto a test server, I'm not quite sure of what I need to do or where I need to start here.
I currently backup the following
SPfile
ControlFile
Datafile
Archive Log
If someone can point me in the right direction or maybe a link to a website, I would be very grateful.
Thanks.

Hi,
login to your box using ssh or telnet
1. rman> connect target /
3. rman >startup force nomount;
4. rman >restore spfile from '/u01/restore/restore/2009_02_07/o1_mf_s_678160942_4rstxj3k_.bkp';
5. rman > shutdown immediate;
6. rman > startup nomount;
7. rman > restore controlfile from '/u01/restore/restore/2009_02_07/o1_mf_s_678160942_4rstxj3k_.bkp';
8. rman > mount database;
9. rman > restore database;
10.rman > recover database;
11. rman > sql 'alter database open resetlogs';
below is the sample i've done on my test environment
RMAN> startup mount;
connected to target database (not started)
Oracle instance started
database mounted
Total System Global Area 167772160 bytes
Fixed Size 1218316 bytes
Variable Size 67111156 bytes
Database Buffers 96468992 bytes
Redo Buffers 2973696 bytes
RMAN> backup database;
Starting backup at 11-FEB-09
allocated channel: ORA_DISK_1
channel ORA_DISK_1: sid=158 devtype=DISK
channel ORA_DISK_1: starting full datafile backupset
channel ORA_DISK_1: specifying datafile(s) in backupset
input datafile fno=00001 name=/u01/app/oracle/oradata/ORCL1/datafile/o1_mf_system_4qzm5q6g_.dbf
input datafile fno=00003 name=/u01/app/oracle/oradata/ORCL1/datafile/o1_mf_sysaux_4qzm5qc1_.dbf
input datafile fno=00005 name=/u01/app/oracle/oradata/ORCL1/datafile/o1_mf_example_4qzmky86_.dbf
input datafile fno=00002 name=/u01/app/oracle/oradata/ORCL1/datafile/o1_mf_undotbs1_4qzm5sgk_.dbf
input datafile fno=00004 name=/u01/app/oracle/oradata/ORCL1/datafile/o1_mf_users_4qzm5vqj_.dbf
channel ORA_DISK_1: starting piece 1 at 11-FEB-09
channel ORA_DISK_1: finished piece 1 at 11-FEB-09
piece handle=/backup/ORCL1_1_1_678528722 tag=TAG20090211T081201 comment=NONE
channel ORA_DISK_1: backup set complete, elapsed time: 00:02:35
Finished backup at 11-FEB-09
Starting Control File and SPFILE Autobackup at 11-FEB-09
piece handle=/backup/c-1061732667-20090211-00 comment=NONE
Finished Control File and SPFILE Autobackup at 11-FEB-09
RMAN>
--- deleted all my file including spfile..
RMAN> shutdown immediate;
database dismounted
Oracle instance shut down
RMAN> exit
Recovery Manager complete.
[oracle]:/home/oracle>
[LinuxForOracle.bai.com]: orcl1 >rman target /
Recovery Manager: Release 10.2.0.1.0 - Production on Wed Feb 11 08:17:27 2009
Copyright (c) 1982, 2005, Oracle. All rights reserved.
connected to target database (not started)
RMAN> startup nomount;
startup failed: ORA-01078: failure in processing system parameters
LRM-00109: could not open parameter file '/u01/app/oracle/product/10.2.0.3/dbs/initorcl1.ora'
starting Oracle instance without parameter file for retrival of spfile
Oracle instance started
Total System Global Area 159383552 bytes
Fixed Size 1218268 bytes
Variable Size 54528292 bytes
Database Buffers 100663296 bytes
Redo Buffers 2973696 bytes
RMAN> restore spfile from '/backup/c-1061732667-20090211-00';
Starting restore at 11-FEB-09
using target database control file instead of recovery catalog
allocated channel: ORA_DISK_1
channel ORA_DISK_1: sid=36 devtype=DISK
channel ORA_DISK_1: autobackup found: /backup/c-1061732667-20090211-00
channel ORA_DISK_1: SPFILE restore from autobackup complete
Finished restore at 11-FEB-09
RMAN> shutdown immediate;
Oracle instance shut down
RMAN> startup nomount;
connected to target database (not started)
Oracle instance started
Total System Global Area 167772160 bytes
Fixed Size 1218316 bytes
Variable Size 67111156 bytes
Database Buffers 96468992 bytes
Redo Buffers 2973696 bytes
RMAN> restore controlfile from '/backup/c-1061732667-20090211-00';
Starting restore at 11-FEB-09
using channel ORA_DISK_1
channel ORA_DISK_1: restoring control file
channel ORA_DISK_1: restore complete, elapsed time: 00:00:16
output filename=/u01/app/oracle/oradata/ORCL1/controlfile/o1_mf_4s5n6jvq_.ctl
output filename=/u01/app/oracle/flash_recovery_area/ORCL1/controlfile/o1_mf_4s5n6n4f_.ctl
Finished restore at 11-FEB-09
RMAN> mount database;
database mounted
released channel: ORA_DISK_1
RMAN> restore database;
Starting restore at 11-FEB-09
Starting implicit crosscheck backup at 11-FEB-09
allocated channel: ORA_DISK_1
channel ORA_DISK_1: sid=156 devtype=DISK
Crosschecked 1 objects
Finished implicit crosscheck backup at 11-FEB-09
Starting implicit crosscheck copy at 11-FEB-09
using channel ORA_DISK_1
Finished implicit crosscheck copy at 11-FEB-09
searching for all files in the recovery area
cataloging files...
no files cataloged
using channel ORA_DISK_1
channel ORA_DISK_1: starting datafile backupset restore
channel ORA_DISK_1: specifying datafile(s) to restore from backup set
restoring datafile 00001 to /u01/app/oracle/oradata/ORCL1/datafile/o1_mf_system_4qzm5q6g_.dbf
restoring datafile 00002 to /u01/app/oracle/oradata/ORCL1/datafile/o1_mf_undotbs1_4qzm5sgk_.dbf
restoring datafile 00003 to /u01/app/oracle/oradata/ORCL1/datafile/o1_mf_sysaux_4qzm5qc1_.dbf
restoring datafile 00004 to /u01/app/oracle/oradata/ORCL1/datafile/o1_mf_users_4qzm5vqj_.dbf
restoring datafile 00005 to /u01/app/oracle/oradata/ORCL1/datafile/o1_mf_example_4qzmky86_.dbf
channel ORA_DISK_1: reading from backup piece /backup/ORCL1_1_1_678528722
channel ORA_DISK_1: restored backup piece 1
piece handle=/backup/ORCL1_1_1_678528722 tag=TAG20090211T081201
channel ORA_DISK_1: restore complete, elapsed time: 00:02:57
Finished restore at 11-FEB-09
RMAN> recover database;
Starting recover at 11-FEB-09
using channel ORA_DISK_1
starting media recovery
archive log thread 1 sequence 6 is already on disk as file /u01/app/oracle/flash_recovery_area/ORCL1/onlinelog/o1_mf_2_4qzmccv0_.log
archive log filename=/u01/app/oracle/flash_recovery_area/ORCL1/onlinelog/o1_mf_2_4qzmccv0_.log thread=1 sequence=6
media recovery complete, elapsed time: 00:00:01
Finished recover at 11-FEB-09
RMAN> sql 'alter database open resetlogs';
sql statement: alter database open resetlogs
RMAN> exit
[oracle]:/home/oracle>
[LinuxForOracle.bai.com]: orcl1 >sqlplus '/ as sysdba'
SQL> select name from v$database;
NAME
ORCL1
SQL>
i hope this will help you... enjoy!
Regards,
baidba

Ask for a way to learn Oracle and Developer 2000. HELP PLEASE!!

Hi,
I want to learn Oracle database and developer 2000. So I need the softwares.I am going to download
1. Oracle Forms Developer/Server Release 6i for Windows NT
2. Oracle8i Personal Edition on NT
Before download them, I want to know if they can work together. I am in Australia, do you know where I can get the free softwares, or with lower price.
If you have another way for self-training, please let me know.
Thanks in advance.
Sue

They do work together, though the installation process is moderately complicated. You may want to check this web site: http://www.chow1.myweb.nl/
This site has some experiences and procedures that have worked in the past for this combination.
You should also check Amazon.com or your local tech bookstore for books on Developer.

Database link help in oracle

i try to get a resultset from database link but its return empty,so i tried to put the tables in the machine and its successed but with links did not.
can somebody help me.

database link help in oracleOr perhaps your do! Whoops.

Learning Oracle 9i DBA

Dear Experts,
I am planning to learn Oracle 9i DBA and make career in this field.
I have installed Oracle 9i in my Laptop with OS running Wix Xp Sp2.
Please guide me in learning and How or with do i start.
And also if any reference books easy to understatnd please let me know.
Thanks & Regards
Siraj

user541965 wrote:
Dear Experts,
I am planning to learn Oracle 9i DBA and make career in this field.
I have installed Oracle 9i in my Laptop with OS running Wix Xp Sp2.
Please guide me in learning and How or with do i start.
And also if any reference books easy to understatnd please let me know.
Thanks & Regards
SirajSiraj,
I second to Someoneelse's reply that you must start with that product version which is supported now and will be supported in the future , atleast for some time. This includes both 10g , 11g and both are freely available for download at http://otn.oracle.com.
That said, for anyone who is starting with Oracle, one must bookmarked site is , http://tahiti.oracle.com. This is Oracle's documentation which is free and very helpful. Out of this, in the first place, you should start reading Concepts Guide. This would make you understand what Oracle is and how it works. But, docs can be very boring and long to read so besides this, I shall recommend to buy these 2 books ,
http://www.amazon.com/Expert-One-Oracle-Thomas-Kyte/dp/1861004826
http://www.amazon.com/Expert-Oracle-Database-Architecture-Programming/dp/1590595300/ref=pd_sim_b_2
Both are by Thomas Kyte. These books will help you in getting an overall picture with some very good insight which at times, is missing from docs. Besides all this, this forum is always there where you can bring your doubts.
HTH
Aman....

Need Best way to start learning Oracle 11g DBA

Hi.This is Tejaswi.
I want to learn Oracle 11g DBA.I've downloaded all software's and Documentation for Orcl 11g R2. Now. i want to start Learning DBA. Can any one suggest me the best way to Start learning DBA?
Please suggest me the good books For Oracle Architecture and SQL.......

Hello Tejaswi,
The advice you got about reading the Oracle Concepts and 2 Day DBA documentation is very good advice.
I found that knowing some SQL*Plus and SQL Developer was also very helpful as, they both provide a way to interface with the database and try the things you read about. For SQL Plus, I used the book:
Oracle SQL*Plus: The Definitive Guide, 2nd Edition
By Jonathan Gennick
Publisher : O'Reilly
ISBN : 0-596-00746-9 I openly recommend it. It is easy to read, the book is very well thought out, it covers what you really need to know (and more too). The author explains the subjects very well. I would definitely learn some SQL Plus and SQL developer before getting into the 2 Day DBA document (make those 2 days about 7 days each if not more).
To learn SQL, I "sort of" used (I say "sort of" because I only read some parts of it available online and at the local bookstore):
Oracle SQL by Example
By Alice Rischert
Publisher: Prentice Hallit probably has more SQL than you'd need as a DBA but, it is an excellent book you may want to consider.
If you are starting from scratch, as I did, you'll find that you need to learn multiple things at the same time. I believe SQL Plus is the best place to start, along with possibly the Concepts document. That will give you a base to build upon.
HTH,
John.

3 weeks into learning Oracle, and I think I am ready for the next step.

Hi all,
I am in need of some suggestions. I have been learning oracle for almost 4 weeks now, and I need to design a database with some real world functionality. I want it to be fairly difficult so that I am able to learn things by being "thrown to the wolves" so to speak. I will be designing it from scratch basically: requirements gathering, ERD and Normalization, Table creation, and then implementing functionality in increments. I know that is a lot on my plate, but I'm sure I can do it with the amount of resources and documentation there is available.
First things first, I will be using Oracle 10g XE as the database software. I am trying to determine what kind of database I want to design though. I really would like to stay away from the traditional/generic databases, if you know what I mean. Or if it is one of the popular starter DBs, then something with a twist maybe. Here is one of the things I have thought about, hopefully some of you guys that respond can shoot some more ideas at me:
Corporate Inventory database for a company that does a lot of field service work with local parts, but would sometimes require parts to be shipped from other locs:
DB would track inventory for all offices throughout company.
Basic users could only view inventory for each office.
Mid-level users could add/remove items at their local office, and request items to be shipped from other offices.
Management-users could add/remove items, request items, and would be able to approve any pending inventory transfers.
DBA - The administrator, can add new users, remove users, and all the other power that comes with being a DBA.
Does something like this seem like a good project? I would be able to address concurrency, error handling (with codes), multiple user types, etc.
Can somebody suggest a front-end for this?
I was thinking to maybe make a JSP/JSF web based service (to be run locally at first) for all of the forms and such and then use the Oracle XE for the back-end. Does anybody think there is something more suitable?
Also, if anybody can think of another DB system to design that may be better to learn from or more interesting, please suggest it.
Best regards to all those positive community members,
Jason

I would like to take this project slow, I mean I do not plan on having this be a working application in 2 weeks. I would like to slowly develop it and move on to each step after the previous step is understood.
Such as, first start by understanding what tables and keys I will be needing in order to have a database which tracks inventory. Then create users that only have certain privileges. Then start to slowly create the functions/procedures and triggers that will be used to perform certain transactions on the database, starting with the most simple ones first. Finally decide on a front-end that will be best for allowing users to perform transactions in a friendly interface.
By no means do I think this is simple, but I do believe if I approach it correctly I can learn a lot. I was basically just hoping the experienced users in this community could help me understand the best approach and some basic ideas I may need to understand about developing a project like this.

Need to learn Oracle Financials-Need Info

Need to learn Oracle Financials.Anyone with any info.
Please email [email protected]

There are so many versions and packages of Oracle. Which one should I learn?
latest version is oracle 10g
but i think you will go oracle 9i rel 2
because all commercial application use oracle 9i database.
Which is the easiest way to get trained and certified? What kind of certification do I need?
you need a oracle 9i dba certification
or may be 9i developer certification
it up to you
but oracle 9i dba is more valuable than developer track
you will learn this from oracle university
excellent oracle material for ocp (but it is too costly also)
http://otn.oracle.com/training/index.html
Or u will read your self
all oracle docs available athttp://otn.oracle.com/documentation/index.html
better you will read first this
http://download-west.oracle.com/docs/cd/B10501_01/server.920/a96524/toc.htm
download oracle software
http://otn.oracle.com/software/index.html
My need: to find a job that was similar to previous ones that I had. My previous job function was to develop database applications using Visual FoxPro,
in oracle ,oracle developer is used for such type of application
its front end tool
gui tool like v.foxpro
and oracle database is backend tool for store information
i think v.fox pro perform both work as frontend as backend
in oracle
oracle developer is front end(old name is D2k)
oracle database is back end
i am also a developer but now find job as dba.
i am always intersting in DBA . but in IT market
there is no entry level DBA job and
its very difficult to go for dba job without experience.
so my suggestion is
read your self
install oracle on u r pc read docs from otn.oracle.com web site
and find a job on oracle platform
BEST OF LUCK AND I HOPE YOU WILL GET A BETTER JOB SOON
hope it will help you
kuljeet pal singh

What are the softwares that I need to learn Oracle Apps- Financial module?

Hi All,
I'm a PL/SQL developer and supposed to learn Oracle Apps - Financial Module from Technical perspective as a part of my new job requirement. So, could you please help me figure out the softwares required to start learning Oracle Apps. ?
I think, I need servers and clients of E-Business Suite & RDBMS (10 g or 11g). I'm afraid whether 200GB of free disk- space & 3 GB RAM on my Desktop may not be sufficient if I install both servers & Clients.
So, please suggest the essential components of E-business Suite and RDBMS I should get to start learning Financial Module considering the above limitation.
All suggestions are welcomed!
Regards,
MK

Hi Mk;
I'm a PL/SQL developer and supposed to learn Oracle Apps - Financial Module from Technical perspective as a part of my new job requirement. So, could you please help me figure out the softwares required to start learning Oracle Apps. ?You need to E-Business Suite r11 or r12 version
I think, I need servers and clients of E-Business Suite & RDBMS (10 g or 11g). I'm afraid whether 200GB of free disk- space & 3 GB RAM on my Desktop may not be sufficient if I install both servers & Clients.
So, please suggest the essential components of E-business Suite and RDBMS I should get to start learning Financial Module considering the above limitation.When u make EBS installation(DEMO which comes wiht data), db will be create automaticly. For You can make installation on external disk wiht VMware option. For installation steps-installlation files-stage,require disk size etc.. check my blog
http://heliosguneserol.wordpress.com/category/step-by-step-oracle-e-business-suite-installation/
There is also DEMO instance avaliable on below link
www.solutionbeacon.com
Regard
Helios

How fast is it possible to learn Oracle if I'm proficient in mySQL?

Hi ladies and gents,
I am planning on creating an estate agency website. I have about 3 months to do that. I did computer science in uni, so i know java, c++, SQL, x/html, html, a bit of javascript, css. I bought a PHP and Oracle book.
My question is, considering the fact that I have never created a website with a fully functional database on, how long does it normally take for experience people to create such a site?
If I am a fast learner would I be able to do it in 3 months? I am really scared that I am taking on a challenge that I will not be able to handle. I will be fully committed and obviously will be spending day and night on designing and coding the site.
Finally the most important question I want people to answer is this, if I am already proficient in SQL, will learning Oracle take much time? Can I not do the site with SQL instead of Oracle at the moment?
Massive "Thanks" to any who answers my questions. I am mainly interested in your views so any reply will be welcome.

I've no idea on the project, having never done anything like that myself, but a working knowledge of SQL, whilst handy, isn't the be all and end all of working with a database.
Firstly, you've got to get the design of the database right - normalised tables, primary keys, foreign keys, etc. Getting that right makes the rest of your job much easier!
Secondly, a lot depends on the database you're working with. You'd take a different approach SQL / code wise when using Access than you would when using Oracle. So, you'd have to get familiar with the capabilities of your particular database platform in order to be able to make the best use out of it. (For example, Oracle has a different method of ensuring read consistency than MS SQL Server does, and what you can do in one big SQL statement in Oracle, you would break up into smaller queries and use temporary tables to hold the data.)
Thirdly, the SQL used in each database platform is slightly different - most of it is standard, but there are bolt-ons which are not the same across the databases (eg. in the case of Oracle, how you handle DATEs is not the same as how you'd do it in SQL Server, Sybase, etc.)
If I were you, I'd stick to using something that I knew, rather than trying to learn everything in 3 months! However, if you were wanting to bolt a website onto an Oracle database, I believe APEX could well suit your needs.

How to start learning Oracle SOA

Hi All
I am a Siebel Guy with 7+ years of experience. I would like to learn Oracle SOA Suite including BPEL, BPM, OSB and AIA.
Please suggest me how to start and proceed.
It will be helpful for me.
Thanks in Advance.
C.R.Bala
Bangalore
India

Start with by understanding what is SOA ? Why do we need SOA ?
Introduction Video
http://www.oracle.com/webfolder/technetwork/tutorials/demos/fmw/SOASuite11g/SOA_Suite_11g/SOA_Suite_11g.html
Some examples provided below from Oracle. Scroll down you can see video which talks about how to install weblogic, soa, osb much more.
http://java.net/projects/oraclesoasuite11g/pages/Home
If you have any issues then let us know we have ppl to help you.
It is considered good etiquette to reward answerers with points (as "helpful" - 5 pts - or "correct" - 10pts).
Thanks,
Vijay

Learning Oracle BPM v10.3

Hello Experts,
Our client owns a bunch of Oracle tools. My next requirement in this project is to LEARN then CREATE a BPM project using Oracle BPM v10.3.
So far I have found only 1 tutorial and NOT the greatest documentation/training matetrial on Oracle BPM v10.3.
What would you guys suggest as a way to learn Oracle BPM v10.3?
FYI - We are using Oracle BPM v10.3 so not interested in BPM 11g.
Your help really appreciated if any of you can share some kind of training docs with me.
Thanks in advanced for any responses!
Kind Regards,
Bhavin
London, UK

Here's a step-by-step on how to consume and invoke a web service from Oracle BPM:
Consuming web services in Studio requires only a WSDL file or URL and Studio then generates all of the appropriate external resources to access it within the PBL.
1. Access http://www.xmethods.net in your web browser.
2. Click Full List.
3. Search for getRandomBushism and click on it.
4. Select and copy the string http://greg.froh.ca/fun/random_bushism/soap/?wsdl to the clipboard
5. Create a new module in the Catalog called “WebSvcs” (open the “Project” flap ->expand the Catalog -> right mouse click “Calalog” ->click “New Module” -> name the new module “WebSvcs”).
6. Right-click the WebSvcs module and select Catalogue Component -> Web Service.
7. Paste the URL saved previously in the clipboard to the WSDL Address field.
8. Click the Next button. Studio will then introspect the WSDL file across the Internet and load the appropriate definitions into the Catalog and External Resources.
9. In Studio, open a process and create an interactive activity named “Get Thought For The Day” in any of roles.
10. Open the method for the activity (double click it) and drag the getRandomBushism( ) method you just exposed from the catalog to the PBL to invoke the service.
11. Modify the logic slightly so it looks like the logic shown below.
randomBushism as WebSvcs.Wsdl.RandomBushism = WebSvcs.Wsdl.RandomBushism()
getRandomBushism(RandomBushismService, out result : randomBushism)
// this display statement should not be used in production
// - it's used here just to show you the result in the easiest way
display randomBushism.bushism12. Right mouse click anywhere in the white space of the logic and click Run This. You should see the result of your call to the web service returned.
Dan

LEARNING ORACLE D-BASE

Hey, I'm interested in learning oracle d-base and I would like to get your opinions on how I can do it without attending a school. Does anyone have e-books where I can learn this stuff??
I have the software so pls if anyne is willing to help me out with some e-books to understand the whole environment, please e-mail them to:
[email protected]
Thanks and bye.

Road map to Oracle Documentation Required Training.*
(from Thomas Kyte "Effective Oracle by Design" book with my 2 cents).
1. Concept Guide (Concept Guide act as a readable index to the rest of documentation.
2. New Features
3. Administration Guide
4. Recovery and backup concepts
5. Recovery manager Reference
6. Recovery and backup concepts (6. and 7 are intended in this list)
7. Recovery manager Reference ( a sounded backup plan is may be the most important part of being a dba. )
8. Performance Tuning Guide reference.
i assume you already know enough SQL and PL/Sql
:)

How to make Oracle program executed through windows XP command line.

I know this thread may not be appropriate to be posted here. However, I couldn't find place to post this question. However, the question is related to Oracle program execution. So I post here for help.
I creted a windows XP shell program to execute a few oracle program to refresh data on database. All oracle programs work very well. But the windows shell program is not working properly. I seek your input to solve this problem. Here is the basic windows shell script:
set oracle_sid=mydb
set MyDir=C:\refresh
sqlplus -s username_1/password_1@mydb @%MyDir%\updt_table.sql
exit
sqlldr username_2/password_2@mydb control=C:\refresh\control_file_1.ctl
sqlldr username_2/password_2@mydb control=C:\refresh\control_file_2.ctl
sqlldr username_2/password_2@mydb control=C:\refresh\control_file_3.ctl
sqlldr username_2/password_2@mydb control=C:\refresh\control_file_4.ctl
sqlldr username_2/password_2@mydb control=C:\refresh\control_file_5.ctl
set oracle_sid=mydb
set MyDir=C:\refresh
sqlplus -s username_2/password_2@mydb @%MyDir%\refresh_table.sql
exit
The problem is: The first sqlplus is to connect to username_1. after windows shell execute and finish updt_table.sql as well as exit from that db schema, it suppose to go to next sql loader command line to login as username_2 to start sql loader control file to load data. The actual situation is: command line hang on at first "exit" and didn't login username_2 to do sql loader work. Please advise me where the problem is and how to fix it. Thanks for your kind help.

krystian:
I have tried this before I post for help. If I moved "exit" after updt_table.sql, the shell only finish the first part of command to update one table. Then windows shell hang on there and do nothing. It didn't go to login as username_2 to execute sql loader control files. This is where the problem is. How to force the windwos shell log into as username_2 to do next step? Thanks again.

Learning Oracle Database will help Oracle programming

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