How To Select On A View, Locks The Table Update?
Feb 1, 2010
I have a Web site live and running now. I am using the Subsonic to handle the database connections etc. I am getting time out expired error while updating a table (say Employee). When I check sp_who2, I see the suspended connection for the PID which is updating with a block by anothor pid, so I run the profiler and found out when ever this suspended connection occur, the blocked pid is a select statement on the view (say ActiveEmployees, which is the same as the table but with some where conditions).
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[Code]....
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{
using (Entities
db = new Entities())
{
try
{
String
cartId = GetShoppingCartId();
var myCart = (from
cc in db.ShoppingCart
where cc.CartID ==
cartId select
cc);
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item in
myCart)
{
int
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if
(i < 1)
{
string
engname = item.EngName;
var myCart2 = (from
c in db.Data
where c.EngName ==
engname select
c);
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new
Temporary();
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Possible Duplicate:
Re-entrant locks in C#
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[code]....
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[code]....
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Feb 14, 2011
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package javaprint;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.image.BufferedImage;
import java.awt.image.ImageObserver;
import java.awt.print.*;
import java.io.IOException;
import java.io.InputStream;
import java.net.Proxy;
import java.net.URL;
import java.net.URLConnection;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.imageio.ImageIO;
public class jPrinter implements Printable
{
String ASP_NET_SessionId = null;
ArrayList<URL> pages = new ArrayList<URL>();
BufferedImage lastImage = null;
int lastRequestedIndex = 1;
public EcPrinter(ArrayList<URL> pages, String sessionId)
{
Thread.currentThread().setPriority(Thread.MIN_PRIORITY);
ImageIO.setUseCache(false);
this.pages = pages;
ASP_NET_SessionId = sessionId;
}
public int print(Graphics graphics, PageFormat pageFormat, int pageIndex)
{
if (pageIndex < pages.size())
{
URL url = pages.get(pageIndex);
BufferedImage img = null;
if (pageIndex == lastRequestedIndex)
{
img = lastImage;
}
else
{
URLConnection connection = url.openConnection(Proxy.NO_PROXY);
connection.setRequestProperty("Cookie", "ASP.NET_SessionId=" + ASP_NET_SessionId);
InputStream is = connection.getInputStream();
img = ImageIO.read(is);
lastImage = img;
}
graphics.drawImage(img, 0, 0, null);
return PAGE_EXISTS;
}
return NO_SUCH_PAGE;
}
}
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Mar 1, 2010
I'm sure this has been answered many times already, but I still can't seem to find exactly how to search for this issue, so apologies in advance.
Anyway, I have a VB script for entering a row of data into a table by a web user. When this row of data is entered, I wish to take some of the values from the columns of the "primary" table, and have that data automatically create a new row of data in a "secondary" table. I think I'm part of the way there, here is my script:
[code]...
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Here's my scenario:
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[Code]....
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$(document).ready(function () {
$(.table).click (function ()}
(this).parent().remove();
[code]...
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Jan 5, 2011
I have two tables in a database and I want to select one value from one of that table. For that I want to pass one value and if that value stored in the table I want pick the id representing the value in the next table.
That means the operation is that first I select a row of data from first table by using a user control in that row there is a value (example "apple") and I want pass that value("apple") to the second table. In the second table the value ("apple") having a id (example "australian") and I want that the query search for that id ("australian") and show that in the text box.
[code]....
Imagine that this is the two tables using a usercontrol I select first a row from first table and I want to pass that value "apple" to second table and find out the id of "australian" (that is equivalent id for apple in the second tabl ) from the second table and show that in a text box.
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Aug 11, 2010
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Aug 16, 2010
I am developing a site using VS2008, so I have AJAX 3.5, and the site is meant for using IE8 browser only. I have a TabPanel with 6 tabs, one of them uses controls with postbacks. I had an UpdatePanel outside the TabPanel so the entire panel will perform a refresh on postback. However, the refresh is a little slow so I tried using an UpdatePanel inside the specific tab to refresh only the controls I need updated. It worked, but what ends up happening is the subsequent AJAX controls (I have NumericUpDownExtenders) and tabs become locked (can't click on them). Is this a problem because the Update Panel is already nested inside an AJAX control (TabPanel)? Or is there some other way to go about doing this?
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Oct 7, 2010
I have update statement.
UPDATE SPECT SET SRE = CLSS.NEWSID
FROM SPECT
INNER JOIN
student (NOLOCK) ON student.ID = SPECT.ID
INNER JOIN CLSS
ON CLSS.GID = SPECT.GID
ON CLSS.GID = student.GID
WHERE student.PID = '20201'
AND CLSS.PID = '20201'
AND SRE IS NOT NULL
However, student.PID and ClSS.PID need dynamically reach through from table CLSS to get each row of PID.
Here my table CLSS
[code]...
How to finish this one?
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