How index Works.

Hi all,
Shall i know how the indexes work internally in Oracle database. Because when we are creating index in some fields, its slows down the speed of the query, and when creating some indexes speeds up the index.
So please help me How to determine the fields, in which i have to create index and in what basis.
Thanks and Regards,
Manu.

Index are reference to data in tables's columns on what they are based. Index work exactly in way like we have book's index describing its chapters and what page # chapter can be found.
They only contain reference to the data. There are two types on index.
B-tree index and bit map indexes.
Whenever new index created on column it stores column value and rowid of that row into the index. The index maintains all the values in the tree structure. i.e. if you create index on salary column (supose salary column contain the salary range 1000) in that case half of the branch on one side contain values upto 1 to 500 and on another side 501 to 1000. again 1 to 500 branch is subdivided into 1 to 250 and 251 to 500. like this oracle divides all the entered data. The actual value contained components are called leaves.
You can get more details at bellow given links.
http://www.orafaq.com/node/1403
Creating new index can hamper the DML performance so there should be ballance between performance of DML and select statments. Consider creating the index if it will be used by many select queries.
Consider the table columns for index creation which will appear in most of the where clause of select statments.

Similar Messages

How index works internally

Could plz any one tell how an index works when it is created ?

http://www.asktheoracle.net/how-do-indexes-work-internally-in-oracle.html

How bit map index works?

I am not getting an example for bitmap index mechanism.
Supposing their is a table T1 with column c1 having records
Y
N
N
Y
Y
N
and i query the table like
select * from t1 where c1 = 'Y'
How bit map index functions?
thanks,
Vinodh

I think you should check the google's new feature to explore -> [How bitmap Index Works|http://www.google.co.in/search?hl=en&rlz=1G1GGLQ_ENIN333&q=how+bitmap+index+works&meta=&aq=0&oq=how+bitma]
Regards.
Satyaki De.

How to work Index

hey buddy please explain that how to work index fast in oracle, your suggestion would be appreciated.

Hi,
I guess you need to use google often.
Read these links it may give you more idea on Index
http://www.databasedesign-resource.com/oracle-indexes.html
http://www.oracle.com/technetwork/indexes/documentation/index.html
http://www.dba-oracle.com/art_9i_indexing.htm
cheers
VT

How Index will work in Oracle

Hi All,
How Index will work in Oracle ? By using index, why the query performance will be increased ?

How Index will work in Oracle ? By using index, why
the query performance will be increased ?Have you ever looked at a large reference book?
When you want to find something in that book, do you look at each page consecutively until you find what you want or do you look at the index in the back of the book to find the page numbers that relate to what you want to find?
;)

Find out how z-index works

This "tool" also helps to undestand how postioning works
(relationship
parent/child, etc.):
http://tjkdesign.com/articles/z-index/teach_yourself_how_elements_stack.asp
Thierry
Articles and Tutorials:
http://www.TJKDesign.com/go/?0
http://www.divahtml.com/products/scripts_dreamweaver_extensions.php
- divaGPS - Add "you are here" highlighting to virtually any
menu
- divaFAQ - Create FAQ pages that toggle (show/hide) the
answers
- divaPOP - Easy, clean, standards-compliant popup windows.

"kim" <[email protected]> wrote in message
news:fg7q46$e1c$[email protected]..
> Very nice.
Thanks Kim
> Thanks for sharing.
You're welcome
Thierry
Articles and Tutorials:
http://www.TJKDesign.com/go/?0
http://www.divahtml.com/products/scripts_dreamweaver_extensions.php
- divaGPS - Add "you are here" highlighting to virtually any
menu
- divaFAQ - Create FAQ pages that toggle (show/hide) the
answers
- divaPOP - Easy, clean, standards-compliant popup windows.

Hi Regarding How to work on SAP Net Weaver CE 7.1 and BPM

Hi Friends
I need Some help from u r side
Currently i have got work on SAP Net Weaver CE 7.1 and BPM (Business Process Management)
How to Work on these SAP Net Weaver CE 7.1 and BPM (Business Process Management)
If u have any Documents .can u give that links
How Configure SAP Net Weaver CE 7.1 with NWDI can u tell me this think also
Regards
Vijay

Hi Friend,
You can follow following pointers hope it will help.
[SAP NetWeaver MDM-7.1 Key Mapping interoperability with SAP NetWeaver Process Integration-7.1 using Web Services u2013 Webinar Presentation|FEATURED EVENTS;
[Best Practices Workflow for Master Data Managemen|http://www.sdn.sap.com/irj/scn/index?rid=/library/uuid/50f1c01b-972d-2c10-3d9d-90887014fafb]
[Best Practices on Workflow Tools Usage for Master Date Management (MDM) Scenarios - Webinar Presentation|http://www.sdn.sap.com/irj/sdn/index?rid=/library/uuid/c0fee6f1-8795-2c10-8ca9-e4883bae5e81]
Regards
Jeetendra

Trying to understand how beans work.

I can't seem to figure out how beans work. Or more specifically how to target different parts of a bean. I think not knowing the terminology is a big part of this confusion too.
For instance. I have a jsp file and a bean. the jsp has a form input that submits to itself. the bean gets the info that was typed in and displays is in the <%= etcetc %> tag. Now, what im trying to do is also submit that value to my mysql db. This has created numerous problems for me. For one, i don't really know how to check if it's working (other than actually looking at the DB table). The other problem is how do i target that part of the bean to tell it to do that function (again, the terminolgy eludes me).
I'll post all of the code. There is a good chance that the DB code wont work. I'm really just hoping someone can explain to me
how i call the DB function from the JSP file.
I mean, is this even possible? Or do i need seperate beans for everything?? It seems kind of silly to not be able to do this.
ok, so here is the code.
JSP:

<%@ page errorPage="myError.jsp?from=hello.jsp"%>
<jsp:useBean id="simpleBean" scope="page" class="jspbook.ch3.simpleBean"/>

<jsp:setProperty name="simpleBean" property="fname"/>
<html>
<head>
     <title>Hello</title>
</head>
<body>
<center>
     <b><%= simpleBean.welcomeMsg() %></b>
</center>
<table align="center">
     <tr>
          <td>
               <form name="sdfsdf" action="test.jsp" method="post">
               <input type="text" name="fname" value="">
               <input type="submit" name="submit" value="submit">
               </form>
          </td>
     </tr>
</table>
</body>
</html>and here is the bean
package jspbook.ch3;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
public class simpleBean implements java.io.Serializable {
   private String emplid;
   private Connection con = null;
   private ResultSet rs = null;
   private PreparedStatement st = null;
   /* Member Variables */
   private String lname;
   private String fname;
public simpleBean()
        try
          Class.forName("org.gjt.mm.mysql.Driver");
          Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/stm?user=root&password=");
    catch(Exception e)
          System.out.println(e.getMessage());
      /* Initialize bean properties */
    setLname("");
    setFname("");
/* Accessor Methods */
public String getLname() {
    return lname;
public void setLname(String _lname) {
    lname = _lname;
public String getFname() {
    return fname;
public void setFname(String _fname) {
    fname = _fname;
/* Display personalized message */
public String welcomeMsg() {
    return "Hello " + fname + " " + lname +
      ", welcome to the wonderful world of JavaBeans!";
      public void insert()
       try
            String s1="insert into commstream (commTitle) values('"+fname+"')";
            st = con.prepareStatement(s1);
            st.executeUpdate();
            st.clearParameters();
            st.close();
       catch(Exception m)
}So there it is. If someone can explain the fundamentals to me, that would be great. What would also be great is if someone can make the above code work :)
I've checked online tuts/specs on this, but to be honest im just not grasping it.

iPhoto is a relational database program
In the strongly recommended managed library (you have chosen to ignore this recommendation and use a referenced library) imported photos are copied to the iPhoto library and stored in the originals folder, a thumbnail jPEG is created and places in the data folder and when any modification is made (including autorotation) a modified version of the photo is created and placed in the modified folder. iPhoto updates its database entries to reflect everything it does.
It is critical that you do not make any modifications of any sort to the content or structure of the iPhoto library - doing so is likely to corrupt the library and cause you to lose data.
When you use the referenced mode which you are doing (and which is not recommended) you are taking total responsibility for the original photos which included not moving or modifying them while iPhoto is referencing them
Unfortunately, all pictures from a certain import has duplicated in iPhoto.... so I "moved to trash" all pictures from that import
Did you do this with the iPhoto trash? or did you use the finder to modify the contents of the iPhoto library.
If I "move to trash", I assumed it got rid of whatever index (and preview cache) to that particular JPEG. I was actually surprised it did not delete the actual JPEG but I'm ok with that.
again - iPhoto trash or finder trash. If you move a photo to the iPhoto trash and empty it all traces of that photo in the iPhoto library will be removed - nothing will be done to any file outside of the iPhoto library -- ever
LN

Can u explain me how to work with OOPs ABAP

Hi,
Can u explain me how to work with OOPS Abap, If possible pls send me some sample programs regarding OOps concept used in Realtime.
Thanks.

hii,
Please check this online document (starting page 1291).
http://help.sap.com/printdocu/core/Print46c/en/data/pdf/BCABA/BCABA.pdf
Also check this links as well.
http://help.sap.com/saphelp_nw2004s/helpdata/en/ce/b518b6513611d194a50000e8353423/frameset.htm
http://www.sapgenie.com/abap/OO/
http://www.futureobjects.de/content/intro_oo_e.html
http://www.sap-img.com/abap/business-add-in-you-need-to-understand-abap-oo-interface-concept.htm
/people/ravikumar.allampallam/blog/2005/02/11/abap-oo-in-action
What is Object Orientation?
Object orientation (OO), or to be more precise, object-oriented programming, is a problem-solving method in which the software solution reflects objects in the real world.
A comprehensive introduction to object orientation as a whole would go far beyond the limits of this introduction to ABAP Objects. This documentation introduces a selection of terms that are used universally in object orientation and also occur in ABAP Objects. In subsequent sections, it goes on to discuss in more detail how these terms are used in ABAP Objects. The end of this section contains a list of further reading, with a selection of titles about object orientation.
Objects
An object is a section of source code that contains data and provides services. The data forms the attributes of the object. The services are known as methods (also known as operations or functions). Typically, methods operate on private data (the attributes, or state of the object), which is only visible to the methods of the object. Thus the attributes of an object cannot be changed directly by the user, but only by the methods of the object. This guarantees the internal consistency of the object.
Classes
Classes describe objects. From a technical point of view, objects are runtime instances of a class. In theory, you can create any number of objects based on a single class. Each instance (object) of a class has a unique identity and its own set of values for its attributes.
Object References
In a program, you identify and address objects using unique object references. Object references allow you to access the attributes and methods of an object.
In object-oriented programming, objects usually have the following properties:
Encapsulation
Objects restrict the visibility of their resources (attributes and methods) to other users. Every object has an interface, which determines how other objects can interact with it. The implementation of the object is encapsulated, that is, invisible outside the object itself.
Polymorphism
Identical (identically-named) methods behave differently in different classes. Object-oriented programming contains constructions called interfaces. They enable you to address methods with the same name in different objects. Although the form of address is always the same, the implementation of the method is specific to a particular class.
Inheritance
You can use an existing class to derive a new class. Derived classes inherit the data and methods of the superclass. However, they can overwrite existing methods, and also add new ones.
Uses of Object Orientation
Below are some of the advantages of object-oriented programming:
Complex software systems become easier to understand, since object-oriented structuring provides a closer representation of reality than other programming techniques.
In a well-designed object-oriented system, it should be possible to implement changes at class level, without having to make alterations at other points in the system. This reduces the overall amount of maintenance required.
Through polymorphism and inheritance, object-oriented programming allows you to reuse individual components.
In an object-oriented system, the amount of work involved in revising and maintaining the system is reduced, since many problems can be detected and corrected in the design phase.
Achieving these goals requires:
Object-oriented programming languages
Object-oriented programming techniques do not necessarily depend on object-oriented programming languages. However, the efficiency of object-oriented programming depends directly on how object-oriented language techniques are implemented in the system kernel.
Object-oriented tools
Object-oriented tools allow you to create object-oriented programs in object-oriented languages. They allow you to model and store development objects and the relationships between them.
Object-oriented modeling
The object-orientation modeling of a software system is the most important, most time-consuming, and most difficult requirement for attaining the above goals. Object-oriented design involves more than just object-oriented programming, and provides logical advantages that are independent of the actual implementation
http://www.sapgenie.com/abap/OO/index.htm
http://www.geocities.com/victorav15/sapr3/abap_ood.html
http://www.brabandt.de/html/abap_oo.html
Check this cool weblog:
/people/thomas.jung3/blog/2004/12/08/abap-persistent-classes-coding-without-sql
/people/thomas.jung3/blog/2004/12/08/abap-persistent-classes-coding-without-sql
/people/sap.user72/blog/2005/05/10/a-small-tip-for-the-beginners-in-oo-abap
/people/ravikumar.allampallam/blog/2005/02/11/abap-oo-in-action
/people/thomas.jung3/blog/2005/09/08/oo-abap-dynpro-programming
http://help.sap.com/saphelp_nw04/helpdata/en/c3/225b6254f411d194a60000e8353423/frameset.htm
http://www.sapgenie.com/abap/OO/
http://www.sapgenie.com/abap/OO/index.htm
http://help.sap.com/saphelp_nw04/helpdata/en/c3/225b5654f411d194a60000e8353423/content.htm
http://www.esnips.com/doc/375fff1b-5a62-444d-8ec1-55508c308b17/prefinalppt.ppt
http://www.esnips.com/doc/2c76dc57-e74a-4539-a20e-29383317e804/OO-abap.pdf
http://www.esnips.com/doc/5c65b0dd-eddf-4512-8e32-ecd26735f0f2/prefinalppt.ppt
http://www.allsaplinks.com/
http://www.sap-img.com/
http://www.sapgenie.com/
http://help.sap.com
http://www.sapgenie.com/abap/OO/
http://www.sapgenie.com/abap/OO/index.htm
http://www.sapgenie.com/abap/controls/index.htm
http://www.esnips.com/doc/2c76dc57-e74a-4539-a20e-29383317e804/OO-abap.pdf
http://www.esnips.com/doc/0ef39d4b-586a-4637-abbb-e4f69d2d9307/SAP-CONTROLS-WORKSHOP.pdf
http://www.sapgenie.com/abap/OO/index.htm
http://help.sap.com/saphelp_erp2005/helpdata/en/ce/b518b6513611d194a50000e8353423/frameset.htm
http://www.sapgenie.com/abap/OO/
these links
http://help.sap.com/saphelp_47x200/helpdata/en/ce/b518b6513611d194a50000e8353423/content.htm
For funtion module to class
http://help.sap.com/saphelp_47x200/helpdata/en/c3/225b5954f411d194a60000e8353423/content.htm
for classes
http://help.sap.com/saphelp_47x200/helpdata/en/c3/225b5c54f411d194a60000e8353423/content.htm
for methods
http://help.sap.com/saphelp_47x200/helpdata/en/08/d27c03b81011d194f60000e8353423/content.htm
for inheritance
http://help.sap.com/saphelp_47x200/helpdata/en/dd/4049c40f4611d3b9380000e8353423/content.htm
for interfaces
http://help.sap.com/saphelp_47x200/helpdata/en/c3/225b6254f411d194a60000e8353423/content.htm
For basic stuff......
abap oops
http://esnips.com/doc/5c65b0dd-eddf-4512-8e32-ecd26735f0f2/prefinalppt.ppt
http://esnips.com/doc/2c76dc57-e74a-4539-a20e-29383317e804/OO-abap.pdf
http://esnips.com/doc/0ef39d4b-586a-4637-abbb-e4f69d2d9307/SAP-CONTROLS-WORKSHOP.pdf
http://esnips.com/doc/92be4457-1b6e-4061-92e5-8e4b3a6e3239/Object-Oriented-ABAP.ppt
http://esnips.com/doc/448e8302-68b1-4046-9fef-8fa8808caee0/abap-objects-by-helen.pdf
http://esnips.com/doc/39fdc647-1aed-4b40-a476-4d3042b6ec28/class_builder.ppt
http://help.sap.com/saphelp_nw04/helpdata/en/c3/225b5654f411d194a60000e8353423/frameset.htm
ABAP Business Development and Service Provisioning/ABAP Objects
General information
What is Object Orientation?
some blogs
A small tip for the beginners in OO ABAP
Object Oriented ABAP (OO-ABAP)
and others wiki OO Abap
cheers,
sharad
Edited by: sharad narayan on Apr 29, 2008 12:19 PM

How APPS_TS_QUEUES works ?

Dear ALL,
I want ask a simple question ,
what is APPS_TS_QUEUES and how it works in oracle.
regards
imron s

I want ask a simple question ,
what is APPS_TS_QUEUES and how it works in oracle.APPS_TS_QUEUES -- Advanced Queuing and dependent tables and indexes
http://docs.oracle.com/cd/E18727_01/doc.121/e12842/T422699g637113.htm#3708397
https://forums.oracle.com/forums/search.jspa?threadID=&q=APPS_TS_QUEUES&objID=c3&dateRange=all&userID=&numResults=15&rankBy=10001
https://forums.oracle.com/forums/search.jspa?threadID=&q=APPS_TS_QUEUES+AND+OATM&objID=c3&dateRange=all&userID=&numResults=15&rankBy=10001
https://forums.oracle.com/forums/search.jspa?threadID=&q=OATM&objID=c3&dateRange=all&userID=&numResults=15&rankBy=10001
Thanks,
Hussein

Anyone know how it works to have multiple websites on iweb? I would like to make a separate one from the one I'm using now and have them both up and running

Does anyone know how it works to create more than one site on iweb - I have my primary site and mobile me connected to my domain name for that site, but now I'd like to add a completely different site and domain name.

Here is some additional info on multiple sites in a single MMe account:
How to have multiple sites in a single MMe account with one or more sites having a domain name.
A. All sites are in the same Domain.sites2 files
1 - only one site can use the CNAME method of domain name forwarding and it must the top site in the left hand pane of iWeb.
Click to view full size
2 - the other sites must use URL domain name forwarding which directs the domain name to the site's full MMe URL, http://web.me.com/MMe_Username/Site_Name, or, if there is no domain name, just MobileMe's full URL.
B. Each site is in its own Domain.sites2 file.
Again, only one site can use CNAME forwarding. This presents a problem since CNAME forwarding directs the domain name to the basic MMe account URL: http://web.me.com/MMe_Username/ which uses an index.html file in the root folder of the account, iDisk/Web/Sites. Each time a new site is published or an existing site uses the File->Publish Entire Site a new index.html file is created in that root directory, iDisk/Web/Sites folder, directing the browser to that particular site. This file is what the CNAME method uses to find the site it represents. Therefore some steps must be taken to assure that the index.html file in the MMe Accounts root directory always points to the correct site. This can be accomplished is three ways.
1 - don't use the CNAME method. Just use URL forwarding . This, IMO, is the simplest method as it doesn't requre any additional effort on the user once the domain name has been set up.
2 - use the following method suggested by Wyodor in this topic: Is it possible to have multiple sites when using ur Domain name?
In iWeb domainfile 1:
Create a dummy site : _dummy
with a blank page.
Create your working site : Whatever
Add pages
Publish both Sites to the same same location on the same server.
Your _dummy site is now the default Site.
Check.
In iWeb domainfile 2:
Create/Use your CurrentSite.
Move a page to the top of the Site and back. Publish the Site.
iWeb will create a new index.html file in the root of the server and from now on CurrentSite is the default site.
Check.
From now on, never move your Whatever Site to the top of the list in the iWeb sidebar and never change the page in the _dummy site.
Simply do not touch your _dummy ever again. And never forget that.
3 - use Ethmoid's suggested method in Using two sites - setting one up with separate domain? or republishing the entire site that uses CNAME forwarding. Just making a minor change and publishing the site changes does not create a new index.html file.
The entire site must be republsihing in order to get that new site.
Or keep a copy of the CNAME site's index.html file on your Mac and replace it manually in the iDisk/Web/Sites fodler when necessary.
NOTE: the CNAME method provides a shorter URL: http://www.Domain_Name.com/Site_Name/Page_Name. CNAME does not have masking.
The URL forwarding displays the full MMe URL:   http://web.me.com/MMe_Username/Domain_Name/Page_Name.   With domain name masking that will be shortened to:   http://www.Domain_Name.com for every page of your site.
WARNING: with masking visitors will only be able to bookmark and enter at the first page of the site. If a page is refreshed the visitor is taken back to the first page. Also search engines will only be able to index the first page of the site.
OT

How accelerator works

Dear Sir,
Can u tell me How accelerator works mean how it increase the performance of query execution?
Thanks and Regards
Lalit Kumar

HI,
BI accelerator is a highly scalable analytic server that processes queries initiated by users of SAP NetWeaver BI. Its uniqueness and the features that make BI accelerator highly scalable is the use of
- SAPu2019s TREX search technology in conjunction
- with blade server architecture provided by its hardware partners.
This is how it works:
1) Data is loaded from source systems into an SAP InfoCube.
2) index is built for this InfoCube and stored inside the BI accelerator appliance.
3) These are search engine indexes built using SAPu2019s TREX search technology.They are stored in a file system (not a database system) using vertical decomposition (a column-based approach as opposed to the row-based approach that requires more read time). This results in highly compressed data sets that further contribute to fast processing speeds.
4) BI accelerator indexes are loaded into memory where the query is processed. In memory, joins and aggregations are done at run time. Loading of indexes into memory happens automatically at first query request, or it can be set for preloading whenever new data is loaded.
5) At run time, query requests are sent to the analytic engine, which reroutes the query to the BI accelerator.
Just to add more:
-> Currently the data source for BI accelerator can only be an SAP Info Cube. It does not work with other SAP data sources such as ODS.
- >Thereu2019s currently a one-to-one relationship between an instance of SAP NetWeaver BI and a BI accelerator. Sharing of multiple SAP NetWeaver BI instances with a single BI accelerator is not yet supported.
->Works only with BW 7.0

How desc works

friends I want to know how describe works in oracle means,what is the code and from which tables it takes diff values and can we define our own version of desc that will include constraints and indexes defines on various columns because the information provide by desc is not sufficient

dj wrote:
friends I want to know how describe works in oracle means,what is the code and from which tables it takes diff values and can we define our own version of desc that will include constraints and indexes defines on various columns because the information provide by desc is not sufficientwrite SQL code to do what you desire

How to work in Business Graphies (Internet Graphics Server)

Hi Friends
I have some help
1. How to work in Business Graphies.
2. How to Configuration IGS (Internet Graphics Server)
3. How to Increase and decrease that u201CBarcodesu201D depending on our Customer details.
Like Business Application. Once Business Profit has high that time u201CBarcodesu201D also Increase where as Once Business Profit has low that time u201CBarcodesu201D also decreases.
Can u tell me?
Regards
Vijay Kalluri

Hi Vijay,
Refer the below links, can give you a fair idea about using Business Graphics in Portal (WDJ/WDA).
Using Business Graphics
http://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/3261cd90-0201-0010-268c-d8d72e358af6?quicklink=index&overridelayout=true
How to Create Business Graphics in Web Dynpro for ABAP
http://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/ca932ebc-0901-0010-68a0-b4dd81a4bf81
Introduction to Web Dynpro Business Graphics in SAP
http://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/717cae90-0201-0010-a5a4-bbc6713f3779?quicklink=events&overridelayout=true
Web Dynpro - Using the Internet Graphics Server in Web Dynpro Java
http://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/50c7a90f-21a3-2910-87b5-e1f0e39462ae?quicklink=index&overridelayout=true
Business Graphics in WD Java Demo
http://www.sdn.sap.com/irj/scn/elearn?rid=/library/uuid/203df40b-6c7a-2a10-418d-99f87d32d3ca&overridelayout=true
Check the below URL if your IGS configured or not:
http://<hostname>:4XX80/
this should result in 'SAP IGS is running' on browser.
Thanks,
MS

How it works transference by file format

how it works in sap to rise in the share transfers banacarias business partner> Payment System> transfer> House bank> File Format

There is a forum called Core SAP Business One other thing .... is that Poster in Spanish
https://forumsa.sdn.sap.com/index.jsp?categoryID=1
In this path lies SAP Business One and leave the post where appropriate
Greetings

How index Works.

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