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SQL Performance Tuning

by Matt Lagarro on May 14, 2011

Performance tuning your SQL Server applications shouldn’t be delegated to the end of your development process. In order for your SQL Server-based applications to run and scale at their full potential, you should consider performance and scalability during the early stages of the development.

You have probably run across some slow running applications that were SQL server based if you have been an SQL developer or a DBA. Often, when SQL performance problems arise, people point to different causes. For example, you may get one engineer arguing that the problem is with hardware while someone else may say that it’s related to new code. This approach is rarely helpful.

In an ideal scenario, proper architecture design is the best way to ensure that SQL server application performs optimally. This includes careful up front analysis of the functional requirements for database application, design that is highly scalable and following best coding practices.

Performance and scalability need to be built into any SQL Server database application whether it’s small or large. After the application is deployed, it can be very expensive and difficult to resolve performance and scalability issue.

The team responsible for SQL Development needs to have a strong background in design and implementation scalable applications that are optimized from the start.

In addition, performance and scalability testing should be scheduled throughout the software development cycle, long before the application is ready for production. Performance testing needs to be an integral part of the development process, starting in the earliest stages of the design of the database and continuing as is necessary throughout the entire process. Most performance and scalability problems are the result of poor design choices that usually can be caught and prevented early in the design process. If the problems are not addressed early on, to resolve performance issues, one may have to re-write a significant portion of the application.

When you are conducting performance tests, you should always proceed scientifically and test only one variable at a time. For instance, if you suspect that in order to increase performance you need to add an index to a table but you aren’t sure which column permutation is best, you should methodically test configuration at a time and record all execution times individually. If you don’t approach performance testing methodically, you will not be able to isolate the root of the problem. This is applicable to all aspect of performance testing including testing various hardware configurations, making SQL server configuration changes, or adding indexes.

You should always use large data sets when testing. You should also use hardware that is similar to the hardware that will be used when the application goes into production. Not doing this may result in your application failing miserably in the real production environment.

Many performance and scalability problems are not obvious. The reason for this is that many problems related to performance are not the result of a single issue but rather two or more problems. This makes it difficult and time consuming to isolate the root cause of the performance slowdown. To resolve complex performance issues one must isolate and address one problem at a time until achieving a satisfactory performance of their database application.

Click here for more information about sql server performance tuning and sql consulting.

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Dealing with SQL Deadlocks

by Matt Lagarro on May 14, 2011

SQL deadlocking can be a difficult and a complex problem to solve. SQL deadlocks may occur anytime the database application has to handle multiple users and complex transactions. SQL deadlocks can directly lead to server timeouts and end-user errors.

Deadlocking can happen to any database system that depends on locking to ensure that user transactions don’t interfere with each other. It’s important to understand what causes SQL deadlocks in order to isolate and resolve them.

Database transaction is the primary concept behind deadlocking. To provide users with a view of the database that is consistent, SQL Server must lock some of its resources while the work is being completed. A SQL Server deadlock happens when at least two processes attempt to acquire locks in a manner that is incompatible. The actual deadlock occurs when multiple processes are waiting on each other to get access to a resource that one of the other processes is already holding.

SQL Server threads can wait on application events, memory resources, other threads, parallel query resources, and locks. Deadlocking can happen with application events, memory waits, threads, parallelism and locks. The most common scenario of SQL Server deadlocking involves locking of actual table objects.

Deadlocks typically involve at least one resource and two transactions. It’s helpful to view deadlocks as occurring in two stages. The first stage happens when each thread is granted a lock on a particular resource. Usually, they are different resources, although they could also be the same.

The second stage happens when there is a blocked request and each thread requests a lock that is incompatible on a resource that belongs to the other thread. Prior to the thread being released, each thread waits on the other to release its lock. The SQL server will then detect the deadlocked state and roll back one of the transactions. This will typically lead to an end-user error.

It’s important to note that deadlocking is different than blocking. Some momentary blocking is normal and happens because one thread is waiting on another. In any database system that uses locking to maintain transaction isolation and data integrity, blocking is expected. However, blocking that is long in duration is considered a problem. Short periods of blocking occur frequently in a system that is active. The kind of blocking that needs to be avoided is when two threads block each other mutually. This type of blocking can result in deadlocks.

Usually, SQL Server will roll back the least expensive transaction involved in a deadlock. This can be overridden by using a SET DEADLOCK_PRIORITY session-level option. However, when both threads have the same DEADLOCK_PRIORITY setting, the Lock Monitor will select one of the processes as the victim.

When rolling back a victim transaction, the SQL Server engine will abort the batch, roll back its transaction, and cancel the query. This is different from a 1205 error. SQL deadlock cannot be detected from within Transact SQL by using command @@ERROR. This has a severity level of 13 which can be corrected by the user, and therefore the client may resubmit the query.
There are several tools that can help isolate sources of SQL deadlocks. These tools detect objects and transactions involved in a deadlock. Most of these tools use a periodic detection system that inspects the processes every several seconds to determine if there are any deadlock cycles.

While completely eliminating deadlocks from a highly transactional application is not an easy task, it can be accomplished through a combination of following best design practices and using tools that detect and isolate SQL deadlocks.

Click here for more information about sql server performance tuning and sql deadlocks.

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Flash Technology. Give Your Imagination The Proper Instrument!

by Rafael W. Hill on May 13, 2011

Today is one of those mornings that you feel full of energy and imagination. Do you want to make a good use of it? Make a video to promote your business or to give it as a present for your best friend’s birthday. Videos are always the best way to attract the attention of certain audiences. Whether for your customers or your friends, creating a video is a good way to give free rein to your imagination. Today, you will learn how flash can help you.

Flash is a very useful program that will help you to create animation and videos with no need to have programming skills. No matter how long or short your video is, Flash gives you a wide variety of options to create from a short commercial to promote your business to a long video full of animations for your friends. On the other hand, even though you don’t want to add animations or changes to your video you need Flash to display it on your web site. You must import your video into Flash because FLV is the most popular format to display videos on the Net. The steps are simple. To create your own video without cost you just need a computer, the Flash program and this article, of course! Let’s see how to do it.

The first thing you need to do is to import the video you have into Flash. Most of the video formats can be imported into Flash, with the ironic exception of FLV (flash video files) format. So, open the program, open the library palette and make a new embedded video symbol. Click with the right button of your mouse on the symbol and go to properties to import a video to your computer. Once you have imported your video, you need to click on “Export” to convert it into FLV. Now, it is ready to be uploaded to the server.

But, wait a second! Are you sure you don’t want to add some funny animations to your video? There are just a few steps that you need to follow. First, choose the element you want to animate. It doesn’t matter what kind of element you chose. It can be a drawing, a text or an imported image. Now, create a symbol and name it. Then, go to the symbol properties and click on “Movie Clip″ to specify what kind of symbol you want to use.

Now, it is time to animate. You need to create a layer for each symbol you have. Every layer will have a key-frame in the timeline. Now, you need to create a new key-frame and move your symbol to the destination area. Once you have done it you need to click on one of the regular frames between one of your two key-frames. You will see a menu at the bottom with many animation options. Select the desired kind of animation and fill the time between the two key-frames. You can repeat these steps with all the elements you want. You can also create complicated animations making different animation sequences and adding free flash templates. Once you finish them you can export your new video to display it on the Net.

Rafael W. Hill is an animator whose imagination and premium flash templates are his best tools to make the most wonderful videos ever. He often uses the themes from massivetemplates.com to upgrade his websites.

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Why your site needs WordPress ?

by Gloree McGraw on May 12, 2011

Wordpress is not only weblog platform now and it is hugely employing as content management system. If you are preparing to us wordpress as your internet site or for your online enterprise then It ought to be final alternative for you.

Now you may possibly start off considering regarding why Wordpress afterwards check the following points.

Free. If you have certainly not noticed about open up obtain edgeware, you may be wondering why something as great as WordPress is cost-free. WordPress is no cost due to the fact it has been created by a worldwide neighborhood of developers, who do it as a pastime and simply because they loved the open supply spirit. Not solely WordPress by itself is free but additionally a lot of its themes and plugins are totally free, that suggests which one can produce a really rocking site for free of charge.

Simple to use. Simplicity of use is yet another main reason why WordPress is a wonderful option for an online operating system. This implies that another person with wee happening will be able to deal with WordPress with no or just a little help from the pros.

Secure. As far as online company is concerned, safety is of the largest importance. If your platform is insecure, this is a risk to everything you do and you just can?t afford to go for an insecure platform. Luckily, in regards to security, WordPress tops the list. It is correct which there is no unhackable software and nobody can money back guarantee you which also with the most stringent security measures your WordPress site will by no means be hacked but it accomplishes generate a variation whether or not you install a safety fortress or an straightforward goal for a beginner hacker.

Very customizable. You could absolutely want your online platform to have a unique look. With WordPress this is simple to achieve. There are hundreds of themes you can choose from and thousands of plugins to add in order to get exactly the functionality you need. If you are a web custom made and/or web developer, one can also use current themes and plugins and modify them precisely to your liking. Not quite a few other CMS offer this kind of personalization freedom!

Fantastic community. Last, but not minimum, one more main reason why WordPress is such a stellar online platform is its neighborhood. The message boards at WordPress.org and the various WordPress-related sites contain lots of threads about everything WordPress-related. Moreover, virtually constantly once you are stuck with a difficulty and ask for improve, intelligent and skillful WordPress gurus hurry to your assist. The WordPress neighborhood is simply fantastic and you could occurence it yourself.

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Excellent online flashgames

by Stephan Wiedemann on May 12, 2011

If you are searching for entertainment, then good online games have to be among your earliest alternatives. Free online games provide great advantage they can be found online completely free. Everything required for it are a PC which includes a internet browser along with the the Flash Player software.

But what marks great online flash games? How does a terrific online game vary from a boring one?

If somebody prefers an onlinegame or not is, certainly, a question of preference. Yet an important factor is definitely, that good online games must be totally free. Most good online games can actually be played completely free of charge. All of these online games earn money for their makers via advertising, that are typically shown on their online websites. Actually an excellent thing, for the reason that it will keep the online games free available for you. Or does one instead commit large amounts of income for some minutes of enjoyment?

One more fundamental issue for a good online game is definitely an entry that needs to be as simple as achievable. No person would rather go through a lengthy and boring manual or play through couple of hours of courses before enjoying a round of an entertaining online game. Good online games need to be explaining themselves by playing.

Good online games must also offer you an addictive gameplay. Who would like to play the thousandth remake of an old video game with out fascinating new idea? Good online games should certainly amaze their gamers from the very first second of play!

But online flash games must also inspire the players more than five minutes. There are actually quite a few free internet games on-line that offer fun that can last for hours. Many online games nowadays deliver challenging principles, and motivate players to return to play frequently. Notably role play games or upgrade games offer you great replayability, and preserve players on the screens for hours. So get your keyboard all set and commence playing.

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Where to Find The top Graphic Design Careers

by Karri Owens on May 8, 2011

Whether you are just out of school or just feeling ready for something new, good graphic design jobs abound. We are residing in a visual society most of us spend hours on the net perusing site after site. Most of these sites has visuals, the ones visuals were designed by someone. That a person could be you. And even if you don’t want to explore graphic design jobs centered on the internet, there are so many other areas, packaging, print design, advertising, marketing and within all of these areas there are graphic design jobs that you might be able to fill.

Where do I start? Start looking on the internet. Enter “graphic design jobs” into your favorite search engine and start exploring. You can find many different types of sites – just about all involve job searches by type of job and location. If you want to apply for all of these jobs you will need your resume and portfolio. So be ready. Some will be standard job search sites while others will be professional organizations. Spend time just looking through the sites and saving sites that you will want to return to. I recommend making a “graphic design jobs search” folder in the “favorites” or “bookmarks” section of your browser. Make use of this when you save the links you wish to return to.

If you are a member of a professional organization this is a great place to look first. As a student it is possible to join reasonably. Often you will find o associate memberships which might be also economical. Being a member of a specialist organization also looks good and adds credibility on the resume.

Preparing for your graphic design jobs search.

You know where you want to go. Now you should get ready. Is your resume ready? You will find sites on the internet that show you how to write resumes and give you guidelines for assessing the one you currently have. If you think you may need more experience to include in your resume, volunteer to do some jobs for non-profit organizations. Make sure you do an excellent job and have them if they will be a reference you can contribute on your resume.

You will also need a portfolio in your search for graphic design jobs. There are several kinds of portfolios – paper, web and DVD/CD portfolios. Again, you can study a lot about refining your portfolio by searching the web for information about designing a portfolio. A lot of the job search sites, especially professional organizations let you upload your portfolio to their site, along with your resume. Web-sites you can post your resume, although not the portfolio.

It may be well worth the time and money to have your own web page so that you can put a link in your portfolio in your resume. In case your search for graphic design jobs includes web design, then make sure that your web site is reflecting the work that you can do in this area. Devote some time with it. Keep refining and changing it. Ask visitors to view it and give you comments, especially past instructors or mentors. In reality, it′s a good idea to have your present or past instructors or mentors review all your job search materials, resume, portfolio, DVD/CD, and site.

Now, you are ready to find graphic design jobs that fit your skills and talent.

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How to Choose the best Website Host

by Marc Marseille on May 8, 2011

Each person who wants to earn money online understands that having a website is a vital part of that process. Through your website you should be able to earn money with advertising, sell products, create a good reputation for yourself, advertise your services and any number of other things that can help you earn quite a nice living. Obviously, if you want to have a excellent website, you’ll need to have a good hosting provider. It does not matter what any one says, not every hosting company is the same. Some are definitely better than others.

When you start to look for hosting the first thing on your mind is probably going to be the price these companies want you to pay. If you are like most, you’re hoping to get as much as you possibly can for as little as you can. Don′t worry, there isn′t anything at all inappropriate with this, it is a goal many of us have. Of course, from time to time, allowing yourself to pay more money for better service is exactly what you need to do to make sure that you succeed. So, instead of just looking at the numbers, look at the things you will get for those numbers. [youtube:6sI5XmNau3U?fs=1;[link:why is my site not ranking in Google];http://www.youtube.com/watch?v=6sI5XmNau3U?fs=1&ampfeature=related]

When you begin out, you do not need as much space as you require after you’ve located true success. Once in a while it can be better to just focus on the things that you need right now and then upgrade as you need to over time to get more bandwidth or hard disk space. This will allow you to expand with your business. Look for a web hosting service organization that will allow you to upgrade without a whole bunch of hassle.

As an Internet Marketer, you’ll need to look for a host that has plenty of wiggle room to try different types of things. Some hosts try to control the avenues others take to get to your site. They are likely to attempt to command what you post. These are certainly not sites that you should be paying to web host your enterprise. Be sure to carefully go through all of the fine print before you sign up and make sure that you are not accidentally offering them control over your content, your earnings, your links, etc.

It can be really tempting to select the 12-monthly rate for hosting. When you’ve found a fantastic web host this can be a good way to save some money. If you will be only starting out, nevertheless, this could be a great way to lose money. You don′t want to get secured into a sponsor that is going to be bad for you. It is way better to try out a host for a month or two before signing up for a full year of service. Don′t get coerced into paying for hosting that forces you to make a big commitment immediately.

The proper way to select your hosting is to do your research. Learn every thing you can about the different hosts and what people think of them.

When choosing the best rated hosting make sure you bear in mind in addition obtaining your internet site positioning by means of search engine positioning formula.

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Graphic Designing- Accurately represents your business persona

by Kapil Garg on May 7, 2011

Now a days the internet is part of life so is the Graphic designing, which has great role in any business success. Graphic Designing is a process and creating art work by using text, graphic and effective messages in the company logos along with the different types of visual communication solutions. Creativity is best with using items like- catchy colors, text for description, images to given a new definition to creativity, using latest technology and skills.

Graphic designing help in communication with visual effect to communicate business idea, products and services that goes in to viewer’s mind to create a mind space for a brand or products. Website is most widely used way of communications and its visual part can attract customer which actually act as an online brochure website and look more valuable. Though, graphic designing needs of any businesses house may differ from company to company, and to their types of need and budget. Graphic design surely act as a catalyst and attract visitors, motivate them for a purchase after they to read your website content and view graphical representation in a effective way.

It can use anything to create a great graphic which may include numbers, shapes, words and different colors and Images to create a visual experience and represent a messages and ideas to a website. It can be concluded that a great graphics designing service make your business stand out and put you ahead of your competitors and help you to achieve long term goals and objectives of the firm by attracting viewers and give the pleasant experience on website. Logos is one of the main part of it as it give a symbolic identity to a company and can be used on websites, flyers, letterheads, business cards, etc.

Few of Advantages:

Graphic designing is a crucial way to any online business, making it stand out head and shoulders from the competition. It successfully attracts and holds a visitor’s attention from the beginning to the last page. Some more advantages are mentioned below:

1. It represents your business mission and vision with the customized logo and shapes with color combination which is 100% unique for your online business.
2. A well mixed graphic campaign for business promotion and media can great impact on viewers and help you advertise and communicate about the product or services.
3. It helps in formatting and predicting the long term plans and objectives of any firm.
4. Its helps you in branding and putting your feet strongly on the success path ahead of your competitors.
5. Website is one of the strongest tool used by business houses and it act as gateway to global market place.
6. You Stand out from your competition and help in effective for online business.
7. Last but not the least, it’s a identity to you that make you happy that you are unique and one in millions.
8. You are the one in million becouse you have unique identity.

So in conclusion, Graphic designing is surely an amazing tool which definitely helps you to utilize the power of your website for the purpose of reaching out to your focused target audience. Thus, don’t delay and visit to the site http://www.graphicdesigningworks.com/ and make use of appealing and pleasant graphics to make your visitor stay glued to your website.

Learn more about Graphic Designing Services. Check out the web site where you can find out all about Graphic Designing and what it can do for you.

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Comprehending Incoming Links: One Way Backlinks Utilizing Website Directory Submissions

by Marc Marseille on May 7, 2011

A site directory is similar to an on-line white pages. It is basically a directory of websites organized into the most appropriate categories. Inclusion into a search engine friendly internet web site directory would help a site create traffic, however more significantly, they are a great source of backlinks.

The truth is, there are 2 kinds of website directories paid directories and free directories. Various free directories present the ability to be able to produce reciprocal backlinks and one way backlinks. A reciprocal link means you likewise need to put a link on your very own online web site pointing back to the site directory. Some of such directories might likewise include an option to be able to pay an amount so as to prevent the need for a reciprocal link.[youtube:6sI5XmNau3U?fs=1;[link:why is my site not ranking in Google];http://www.youtube.com/watch?v=6sI5XmNau3U?fs=1&feature=related]

In addition to DMOZ, there are really a lot of various free directories on the world wide web that are even great high pr one way backlinks sources. Whenever choosing free directories to be able to submit your very own site to, it is wise to be able to choose directories which are search engine friendly and not just spam on line sites with inappropriate web sites or categories. Even though world wide web directories are good for generating one way backlinks, submitting your own on line website to spam directories would not help your very own rankings in the search engines.

A one way backlink could actually be generated by way of submitting your very own site to search engine friendly directories for you to be included. Inclusion is not assured at all times so it really depends on the directory. The more respectable directories just accept high quality sites which offer appropriate subject matter. You should likewise be sure that you actually submit your very own site to vital categories.

Whether free or paid, you really ought to submit to directories which are dependable. Directory submission have really lost a lot of importance in the past few years because of the huge amounts of directories that were created for the sole intention of making backlinks. There are actually still many search engine friendly directories on the internet, but various net directories have actually opted to paid submission to be able to eliminate spammers.

Many dealers shy away from submitting their website to paid directories due to the amount which are actually included. The fact is that some solid backlinks from paid directories like Yahoo.com could truly help an online website rank much higher compared to a larger quantity of free directory submissions. Hence, it is actually recommended that site owners submit to at least several of the top paid directories.

In conclusion, generating backlinks by means of directory submission is great source to probable traffic and to make backlinks. Though directory submissions have actually lost some effectiveness due to several spam directories, there are still high quality directories that are actually edited by people to be search engine friendly. The key to being sure that your very own site is included in these quality directories has a whole lot to do with submitting appropriate sites with good subject.

One way incoming links is the recurring factor in search engine advertising, Get your free backlinks site evaluation for your webpage by going to organic seo company.

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Properties Which Most ASP.NET Server Controls Have In Common

by Mark Anderson on May 6, 2011

The server controls found in ASP.NET are specialized server-side objects unique to the ASP.NET development environment which offer a method of adding elements to a web page which have enhanced functionality. To customize the way in which a given server control will function, you specify its properties, the attributes which the control possess. Some properties are unique to a given type of control. However, there are also a number of properties which are common to all server controls. This article examines these common properties.

To set the properties of a given control, simply right-click the control and choose Properties from the context menu. Alternatively, if the Properties window is already visible, simply highlight the control to displays its properties.

Each control has “ID” property which allows you to add a unique name to each element. This ties in with the “id” attribute assigned to HTML elements but is also used by server-side code as a way of referring to the element. All server controls must have an ID, so a default ID is assigned to a control as soon as it is created. Whilst it is possible to be lazy and leave these default IDs in place, it makes much more sense to give each control a descriptive name which matches its role within the context of that page. Many developers like to add further clarity to the name of a control by using a short prefix denoting its type; for example, “txt…” for TextBox controls and “lbl… ” for label controls.

Those properties located in the “Appearance” section of the Properties window determine how the control looks. It contains such properties as the “BackColor” and “ForeColor” as well as the sub-category “Font”. The “Font” sub-category allows you to set the font, size and style of the text within a control. The text property determines the text which is displayed on the control. With some control, like the TextBox control, the text property is normally left blank. With other controls, such as labels and buttons, the text property is essential and will need to be changed from its default value.

Use the TabIndex property in order to specify the order in which elements are activated when using the Tab key to navigate the page. To use this feature, simply assign a number to the TabIndex for each element on the page. Controls with a low TabIndex number will be accessed before those with a higher TabIndex.

You can find out more about ASP.NET training courses, visit Macresource Computer Training, an independent computer training company offering ASP.NET Classes at their central London training centre.

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