Need some Suggesstions-Improving JSP Response

Hi Friends,
This is about improving the response time of the JSPs. I mean I have to display data from a table through a JSP page. The Queries are very heavy. Each time the jsp page is accessed by the user, a database intensive query is executed , which inturn fills the result set and which is further used by the JSP to display the Report/Data of the Result Set. There is one thing that the data is likely, to show a change only once in a period of a Day that is 24 hours. So I believe it is going to be a very intensive operation. Because my JSP has at least 12 links and each link means 12 intensive Queries. SO it means that if I click at a link a Query gets executed (Everytime a click is made) and data is displayed.(The Same Data my get Queried again and again).
I think Since the Data changes only once in a Day(24 hours).How do I handle this situation without going into one SQL Execution per click of a link kind of Situation.
Which in turn Reduces the Response time of the JSP to a great extent.
And I guess makes the process inefficient also. Also toubling tha Database.
Please Help me with a Way out of it.
Thanks

if the result stays the same over a longer period you
could cache it by writing it as HTML and rebuild it
periodiclyYou mean to say that I get the Data and create an HTML of the same. and save it.
And the connect the Link on the Page to the Saved HTML file .
The JSP is however very complex, Friend.

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I am final year cs engg student. I have completed course in java,j2ee. I have done the library management project in servlet. I need some project titles for my final year project. My interests includes, networking, desktop applications.

Saish wrote:
I'm not sure how to help other than to advise you will probably have the best success with something that interests you personally. You mention desktop applications and networking. Perhaps start with something Swing (or JavaFX) and perhaps use that to monitor a network, detect intrusions, dynamically load balance, etc. Really, it's whatever will stimulate you through a long project. If you have an idea in mind, but are having difficulties with how to come up with a spiffy title, then post more detail, and we can try and help.
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Need Some Suggestions-JSP-ORACLE

Hi Friends,
This is about improving the response time of the JSPs. I mean I have to display data from a table through a JSP page. The Queries are very heavy. Each time the jsp page is accessed by the user, a database intensive query is executed , which inturn fills the result set and which is further used by the JSP to display the Report/Data of the Result Set. There is one thing that the data is likely, to show a change only once in a period of a Day that is 24 hours. So I believe it is going to be a very intensive operation. Because my JSP has at least 12 links and each link means 12 intensive Queries. SO it means that if I click at a link a Query gets executed (Everytime a click is made) and data is displayed.(The Same Data my get Queried again and again).
I think Since the Data changes only once in a Day(24 hours).How do I handle this situation without going into one SQL Execution per click of a link kind of Situation.
Which in turn Reduces the Response time of the JSP to a great extent.
And I guess makes the process inefficient also. Also toubling tha Database.
Please Help me with a Way out of it.
Thanks

Well, I think you landed in the wrong forum, but being the friendly bunch that we are, I'll make a suggestion or two.
First, have you tuned your queries at all? What does the tkprof output look like?
If your queries are all "tuned", you might look into materialized views that you refresh with a job on a nightly basis. Keep in mind that you can, and likely should created indexes on materialized views. Look at them as tables that you can refresh easily. Rember to gather stats at the end of your refresh as well.
Thanks,
Tyler

Need to refresh the jsp page

Hello Everyone,
I am not sure if I can tackle the below issue with just html or I need to control it throught my servlet, so posting it on this forum, in case it is a pure html issue, please let me know.
So here is the current situation:
My jsp page gets data from servlet and displays it in a html table. The fields are criteria, median, average...cells of average, median etc are color coded, green, yellow or red, depending on whether the criteria is met or not.
on wish list:
I want the column "criteria" to be of text type so that the user can change the criteria value and see what effect does it have on the colors of columns "average", "median" etc. I do not want to write this changed criteria value back to db, I just want my jsp page to refresh every time user changes value in criteria text box and recalculate the color code for the rest of the columns.
Here is what my jsp page looks like
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ taglib uri="http://paginationtag.miin.com" prefix="pagination-tag"%>
<html>
<body>
<table border="1">
    <c:forEach items="${sheetDataList}" var="releaseData">
    <tr>
      <td align="center"><input type="text" name="newcriteria" value="${releaseData.releasecriteria}" size="25"></td>
      <c:set var="yellowmark" value="${0.25*releaseData.releasecriteria+releaseData.releasecriteria}"/>
      <c:choose>
        <c:when test="${releaseData.average lt releaseData.releasecriteria}">
          <td bgcolor="green" align="center"><c:out value="${releaseData.average}"/></td>
        </c:when>
        <c:when test="${releaseData.average lt yellowmark}">
          <td bgcolor="yellow" align="center"><c:out value="${releaseData.average}"/></td>
        </c:when>
        <c:when test="${releaseData.average gt yellowmark}">
          <td bgcolor="red" align="center"><c:out value="${releaseData.average}"/></td>
        </c:when>
      </c:choose>
</table>
</body>
</html>Thanks.

I don't know what you are doing wrong in your code, but it seems like you are calling the JS function correctly. My feeling is there is some JS error occurring, maybe use a javascript debugger or some alerts to see where the problem is. I made as close a copy of your code I could (with some improvised improvements for keeping track of row counts and accessing the the values for the first 2 columns of the table). At the top I filled to Lists with data so I could cycle through the rows and columns. Then I do the JavaScript and the CSS, followed by the table generation.
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<%
    java.util.List<java.util.List<luke.steve.RowObject>> sheetDataList = new java.util.ArrayList<java.util.List<luke.steve.RowObject>>();
    for (int r = 0; r < 10; r++) {
        java.util.List<luke.steve.RowObject> userActionData = new java.util.ArrayList<luke.steve.RowObject>();
        for(int c = 0; c < 5; c++) {
             userActionData.add(new luke.steve.RowObject());
        sheetDataList.add(userActionData);
    request.setAttribute("sheetDataList", sheetDataList);
%>
<html>
<head>
    <script type="text/javascript">
    
    </script>
    
    <style type="text/css">
      .green
       background-color: green;
      .red
        background-color: red;
      .yellow
        background-color: yellow;
    </style>
    <title>Color Switcher</title>
</head>
<body onload="setAllColors();" onunload="">
    <table border="1">
      <tbody>
        <c:forEach var="userActionData" items="${sheetDataList}" varStatus="rowCounter">
          <tr name="row${rowCounter.count}" id="row${rowCounter.count}">
            <td>${userActionData[0].userAction}</td>
            <td><form onsubmit="setColors(${rowCounter.count}); return false;"><input name="criteria" type="text" value="${userActionData[0].releaseCriteria}"/></form></td>
            <c:forEach var="releaseData" items="${userActionData}" varStatus="colCounter">
              <td>${releaseData.ninetyPercentile}</td>
            </c:forEach>
          </tr>
        </c:forEach>
      </tbody>
    </table>
</body>
</html>I made a dummy class called luke.steve.RowObject to hold the data (represents on releaseData object). The class just generates a bunch of random numbers for this test:
package luke.steve;
public class RowObject {
     public Integer getReleaseCriteria() {
          return Double.valueOf(Math.random()*500.0).intValue();
     public Integer getNinetyPercentile() {
          return Double.valueOf(Math.random()*500.0).intValue();
     public String getUserAction() {
          return "Action "+Double.valueOf(Math.random()*10.0).intValue();
}In this example it works in FF3 and IE7 (though it looks nicer in FF3).

Jsp response performance

Jsp response performance
          ===================
          The problem:
          We have performance problem while running a jsp-application.
          More specific let's assume the jsp-page generates 1000 lines as a response
          to the browser.
          I've done some testing and if the jsp makes 1000 print.out() it works out
          signaficantly
          slower then to create a StringBuffer(with 1000 lines) and do one print.out.
          Why is that ?
          I thought the print.out where buffered in the response...
          ..Per Lovdinger


Hi,
          When using the "out.print( ... )" in a JSP, I believe that it forces the
          compiled servlet to use a PrintWriter. Servlets that use PrintWriter
          instead of ServletOutputStream, are known to be at least 15% slower.
          If you can, I would suggest using a servlet instead of a JSP.
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          idea why the "out.print" is slow, and what you need to do if performance is
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Need some opinions for K9VGM-V

hello all, My computer is only to play and i have this Motherboard K9VGM-V, need some opinions about this. Is necessary to upgrade to another motherboard with my current system? need some pros and contra please about this motherboard. Any response will be appreciate.(im srry, english is not my main lenguage)
Sytem:
Amd Athlon X2 Dual-core 5200 AM2
2GB DDR2 667
ECS Geforce 9800GT
PSU 650W Thermaltake
Windows XP SP3

Quote from: Sm3K3R on 20-March-09, 22:16:45
Recheck if the RAM sticks are inserted into the right DIMM-s for dual channel to work
Also disable in BIOS Cool & Quiet and see if this solves the problem
Whats the score in Aquamark 3?
Edit:Have you installed AMD Dual Core Optimizer ?
I guess they are insert right.. my motherboard only have 2 slots so i guess its works that way. how i can check if they are actually working as dual channel?.
K im gonna disable cool and quiet.. anything else i need to know that can improve my fps?
Aquamark 3?.. gonna check now
AMD Dual Core Optimizer? No.. i dont have that.. im already downloading it
thx for the reply
EDIT:
AMD Dual core Optimizer installed.
K on Aquamark 3 (this test is from 2004 ¬¬) i have 98391.. 18273 on GX and 10658 on CPU.
cool and quiet was disabled on BIOS.. the only thing i changed on my BIOS was the clock from 200 to 211 everything else is on default, i have to say last week i buyed a new Processor a VideoCard and RAM listed before.
From Orleans 3800+ Single core to 5200+ Dual core
From 7300GS to 9800GT
From 2x 512MB DDR2 800 to 2x 1GB DDR2 667 (both were Dual-channel i guess they were the same)

Getting a new touch nokia , please i need some adv...

ok , now i have an e75 nice phone , but i want a touch nokia , ok so there is the 5800 xpress music , 5530 xm , n97 , and n900 , n900 nice phone , but i am not going to use all these specifications and i am more of a media man and the n900 looks like a black laptop , so it is of the list , now we have the 5800 and the 5530 xm , 5800 and n97 i need some advice , does the contacts in the home screen on the 5800 xm have facebook ?or does it even have facebook in the home screen ? anddoes it have an email applicatiopn like the e75 , e71 n97... and can i get e-mail notifications in the home screen ? and wich one is better e75 or 5800 xpress music ?
Reality is wrong....dreams are for real... 2pac .
don't forget to hit that green kudos
Solved!
Go to Solution.

Hi, of the phones you mentioned the N97 will give the best media experience. Now as to the previous post , it is somewhat incorrect. The phones specs are virtually Identical, but run on entirely different operating systems N97 Symbian 60 V5 and N900 Maemo a brand new Linux based operating system, probably much better for web browsing, and superior for flash content. As your interest is in music/video, and you don't want a 'black computer' probably the N97 is still your best bet of the phones you've mentioned. The N900 is as yet not fully tried and tested, but in theory with it's larger phone memory should be better for web browsing and running multiple apps, we'll see. But with v2.0 software my N97 is now running smoothly and working well as a phone and media player, and initial complaints have reduced in number and most problems seem to have been solved. Untill the N900 is truly on-line in numbers it will be hard to judge, and there are already a few problems turning up on this site. Most complex 'smartphones' have faults, check the web, people have problems with iPhone, Sony Erickson just withdrew their latest offering,Samsung has it's critics. It all boils down to personal choice. I think the N97 is now a good phone, plenty of help and advice on trouble shooting, and will improve more with future firmware updates(maybe it should have been launched 'perfect' but it wasn't,neither are other makes) Choose the one you fancy, stick with it and almost any problem you find can usually be solved by researching forums like this.
Enjoy whatever you choose.
Good Luck
PS if you want to compare specific phones specification many web sites will give you side by side comparisons !
If I have helped at all, a click on the White Star is always appreciated :
you can also help others by marking 'accept as solution'

Need some help...in need of a different way.

Hi, I'm new to Java and need some help. I have 2 questions that are similar in nature.
1st Question:
In a program that I'm writting I have a do-while loop which at the end brings up a dialog box that asks the user to enter '1' for 'Yes' or '2' for 'No' to continue.
I would rather have the option of having the user enter 'y' or 'Y' for Yes and 'n' or 'N' for No.
Here is what I have currently:
int x;
String data;
do{
//Blah blah code
data = JOptionPane.showInputDialog(null, "Enter 1 for Yes or 2 for No");
x = Integer.parseInt(data);
}while(x == 1);
x++;
2nd Question:
In another part of my program I have a Case statement that asks the user to enter a number or a letter from a list of choices. They can enter '2' , 't', or 'T'.
I would rather have all of this in an if-else chain. Is this possibe? if so, how would I do it.
Thanks.

I would rather have the option of having the user enter 'y' or 'Y' for Yes and 'n' or
'N' for No. You can test the first letter of whatever the user inputs like this:String response = JOptionPane.showInputDialog(null, "Enter (Y)es or (N)o");
response = response.toLowerCase();
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Foundation Zurb
http://foundation.zurb.com/templates.php
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Initializr (HTML5 Boilerplate, Responsive or Bootstrap)
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Need some help with the Select query.

Need some help with the Select query.
I had created a Z table with the following fields :
ZADS :
MANDT
VKORG
ABGRU.
I had written a select query as below :
select single vkorg abgru from ZADS into it_rej.
IT_REJ is a Work area:
DATA : BEGIN OF IT_REJ,
        VKORG TYPE VBAK-VKORG,
        ABGRU TYPE VBAP-ABGRU,
       END OF IT_REJ.
This is causing performance issue. They are asking me to include the where condition for this select query.
What should be my select query here?
Please suggest....
Any suggestion will be apprecaiated!
Regards,
Developer

Hello Everybody!
Thank you for all your response!
I had changes this work area into Internal table and changed the select query. PLease let me know if this causes any performance issues?
I had created a Z table with the following fields :
ZADS :
MANDT
VKORG
ABGRU.
I had written a select query as below :
I had removed the select single and insted of using the Structure it_rej, I had changed it into Internal table
select vkorg abgru from ZADS into it_rej.
Earlier :
IT_REJ is a Work area:
DATA : BEGIN OF IT_REJ,
VKORG TYPE VBAK-VKORG,
ABGRU TYPE VBAP-ABGRU,
END OF IT_REJ.
Now :
DATA : BEGIN OF IT_REJ occurs 0,
VKORG TYPE VBAK-VKORG,
ABGRU TYPE VBAP-ABGRU,
END OF IT_REJ.
I guess this will fix the issue correct?
PLease suggest!
Regards,
Developer.

Need report generator for jsp

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balaji

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Need some help in developing routines

Hi Ajay/all,
I need some help in writing the routines to my business requirement. If you could send me your mail id I could mail you the requirement.I appreciate ur response.
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hi ,
Look in this link
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<a href="http://help.sap.com/saphelp_nw04/helpdata/en/80/1a62bfe07211d2acb80000e829fbfe/content.htm">http://help.sap.com/saphelp_nw04/helpdata/en/80/1a62bfe07211d2acb80000e829fbfe/content.htm</a>
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How can I improve the response time of the user interface?

I'm after some tips on how to improve the response time to mouse clicks on a VI front panel.
I have data acquistion application which used to run fine, but after spending a couple of weeks making a whole bunch of changes to it I find that the user interface has become a bit sluggish.
My main GUI VI has a while loop running 16 times a second, updating some waveform charts and polling about a dozen buttons on the front panel.
There is sometimes a delay (variable, but up to 2 seconds sometimes) from when I click on a button to when it becomes depressed. I have wired the iteration terminal of the while loop to an indicator on the front panel and can see that the while loop is ticking over during the delayed response to the mouse click, so I know that the problem is not that the whole program is running slow, just the response to mouse clicks.
Also, just for debugging purposes, I have indicators of the iterations of all the main while loops in my program on the front panel, so I can see that there are no loops running abnormally fast either.
One thing I've tried is to turn off multi-threading, and this does seem to work - the response to mouse clicks is much faster. However, it has the side effect of making the main GUI while loop run less evenly. I was trying to get a fairly smooth waveform scrolling across the screen, and when multi-threading is off it gets a bit jerky.
Any other suggestion welcome..
(I am using LabVIEW 7.1, Windows 2000).
Regards,
Mark.

Hi Altenbach,
Thanks for your reply. In answer to your questions:
I am doing both DAQ board and serial data acquisition. I am using NIDAQ traditional for the DAQ board, and VISA for the serial. I have other similar versions of this program that do only DAQ board, or only serial, and these work fine. It was only when I combined them both into the same program that I ran into problems.
The multiple while loops are actually in separate VIs. I have one VI that acquires data from the DAQ card, another VI that acquires data from the serial port, another VI that processes the data and saves to file, and another VI, the GUI VI, that displays the data in graphs and charts. The data is transferred betwen the VIs via LV2 globals.
The GUI VI is a bit more complicated than I first mentioned. It has tab control, with 4 waveform charts on one page, 4 waveform graphs on another page, and 3 waveform graphs on another page. The charts have a history length of 2560, and 16 data points are added 16 times a second. The wavefom graphs are only updated once per minute.
I don't use the value property at all, but I do use lots of property nodes for changing the properties of the graphs and charts e.g. changing plot colours, Y scale range etc. There is only one local variable (for the Tab control). All the graphs and charts have data wired directly to their terminals.
I haven't done any profiling yet.
I am building arrays in uninitialised shift registers, but this is all well under control. As the experiement goes on, more data is collected and stored, and so the memory usage does gradually increase, but only to the extent that I would expect.
The CPU usage is 100%, but I thought this was always the case when using NIDAQ with DAQ cards. Or am I wrong about this? (As a side note, I am using NIDAQ traditional, but would NIDAQmx be better?)
Execution priority of the GUI vi (and all the other VIs for that matter) is set to normal.
The program is a bit large to post here, and I'm not sure if my company would be happy for me to publicise it anyway, so I suspect that this is turning into one of those questions that are going to be impossible to answer.
Just as a more general question, why would turning off multi-threading improve the user interface response?
Thanks,
Mark.

Need some help after inserting CMS system

Hi on my site ive inserted an CMS system from Cushy. It all work that isnt the problem. The problem is that my page is a mess now.. The only thing ive addes is a cms code so im hoping the solution isnt hard to do.
There are three pages that are complete changed.
The home page
http://www.vakantiewoningeninsuriname.nl/index.html
The text colomn right under is moved.How can i place this back?
on http://www.dorff.nl/ you can see how it was before i add the CMS.
The next page is:
http://www.vakantiewoningeninsuriname.nl/bezienswaardighedenparamaribo.html
You can see there is a lot extra space between the head and the text. And you see that the text is not only at the right side anymmore.
This is how it should be:
http://www.dorff.nl/bezienswaardighedenparamaribo.html
The same goes for this page:
http://www.vakantiewoningeninsuriname.nl/prijzen.html
And this is how it have to be:
http://www.dorff.nl/prijzen.html
Hope you can help, thank you for looking..
Regards Brian

Dear Nancy,
Thank you for your response,
I will try to explain again what is wrong. On my site you see this page:
http://www.vakantiewoningeninsuriname.nl/prijzen.html
Problem is that the picture below is on the right side of the page instead of the left like the other pictures.
On:
http://www.dorff.nl/prijzen.html
You can see how it should looks.. Pictures to the left and text on the right. Dont know what happened when im adding the Cuschy CMS. Hope you can see what is wrong.
Regards Brian
Date: Wed, 2 May 2012 13:04:14 -0600
From: [email protected]
To: [email protected]
Subject: Need some help after inserting CMS system
    Re: Need some help after inserting CMS system
    created by Nancy O. in Dreamweaver - View the full discussion
Change this:
Prijzen
Bij ons kunt u terecht met elk budget. Wij hebben woningen voor mensen die een langere tijd blijven maar ook voor vakantiegangers. Daarom hebben wij verschillende prijzen gehanteerd.
to this: <!Begin CushyCMS>
h2. Prijzen
Bij ons kunt u terecht met elk budget. Wij hebben woningen voor mensen die een langere tijd blijven maar ook voor vakantiegangers. Daarom hebben wij verschillende prijzen gehanteerd.
<!end CushyCMS>   Nancy O.Alt-Web Design & PublishingWeb | Graphics | Print | Media Specialists http://alt-web.com/http://twitter.com/altweb http://alt-web.blogspot.com/
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Need some help on JAVA CHAT SERVER

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Have you read any of these?
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Need some Suggesstions-Improving JSP Response

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