The Importance Of Java Training For IT Professionals

Anyone in the field of IT in any industry must always be updating and learning new skills if they are to do their job effectively.  The world of technology is constantly moving and never stays still, so anyone that works within that world must also never stop the learning process to stay on top of all the latest developments.  If you fall behind in even one area, you could end up costing your company a lot of money or worse.  Most people outside of the IT industry get a little dazed and confused when it comes to trying to decipher all of the codes and formulas, but that’s why IT is an industry unto itself and IT professionals are so valuable. 

Useful tips for writing a blog based on technology

Writing a blog can be an interesting pass time. It is not only an excellent medium to kill your time but writing a blog post on a regular basis also helps you refine your writing skills and enriches you with useful information. It helps you to become more dedicated towards your work, not to mention the popularity that you gain in the online world. One of the best SEO Companies in India suggests that a blogger, no matter what his niche, should always write on topics that the people would love to read about. A blog, after all, is for the people and therefore, it must cater to their needs at all times. As a rule of thumb, there are three things that you must always direct your energy towards. Firstly, you must decide the main objective for your blog followed by the type of content that you wish to write about. Once you have these two things sorted, the last thing that you need to take care of is the source of information. Given below are some tips that will help you write a user-friendly technology blog. 

Do You Choose the Free VPN Service or Paid For VPN?

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Many have been asking whether or not they should choose a paid VPN or free VPN services for their portable devices.  This is a question that many will debate over so let’s just keep things simple.  First of all, if you’re on a tight budget or just unsure about VPN, you should try out a free version.

Using the free options will give you time to see how VPN works and whether that particular service will offer you the best service.  However, if you find you don’t like the services you get with the free option, there is always paid companies. 

With the paid services, it’s more than likely that you will get a little more for than money than what you would get with free.  You might also find that the free trial helps you to make up your mind about free or paying VPN.

Both free and paid VPN services can work excellent for web users.  You will have to think very carefully as to whether your budget can add virtual private network services or not.  If not, don’t worry, there are many good free options out there but if you want all honesty, the paid services are always the best. 

They offer value for money and just an easier feeling in knowing where your money is going.  That is not to say free is no good but you really do want to feel at ease when using the paying services.

The Best VPN Service to Choose

There are many good services out there for VPN today but it will all depend over what you are particularly looking for.  For example, you might want to choose a company that is well trusted and known such as Hide My Ass, however, they might not give you the specifications that you are looking for.  You might not want to choose a service that is over ten dollars a month either, but the choice is yours. 

This is why it’ll be important to search and not just look at one or two sites.  You have to know who is out there and who you can trust; and it might take a little longer than what you hoped for while searching.  However, it will be the best option for you to find the best VPN providers.  There are many of them out there such as Pure VPN, Ghost VPN, Cyber and many more so it will be vital that you take the time to see what is out there and really know what’s best for you. 

Of course, if you don’t like any of the paying virtual private network options, you don’t need to chose them.  You can freely choose one that offers a free test run or trial, this way you don’t waste more money than you really need to.  It’s entirely up to you but for your portable devices, you need to think what is best to protect you.

Mike writes about VPN. you may Check out his latest post about best VPN.

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Recognizing Common Oracle Database Performance Issues

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Oracle database performance improvements require continual and iterative efforts to produce results. It is not a one and done activity. Constant vigilance and performance monitoring are required for long-term success.

Neither is it a matter of finding and removing one performance bottleneck. There are likely more than one to be found. In fact, further investigation may lead a DBA to an even greater performance problem.

Oracle database performance problems typically result from lack of data throughput, unacceptable user or job response time, or both. To determine the nature of the problem and create a path to resolution, you must gather as much performance data as possible, including from end users, call centers, or any other stakeholder who can speak to end user system performance.

The next step is to gather Oracle database performance statistics. This can be done using the Automatic Workload Repository (AWR) or with third-party solutions such as Confio Ignite for Oracle. The statistics captured by these tools include:

• Time model statistics
• Wait events
• Session and system statistics
• Active session history
• High-load SQL statistics

 

Common Oracle Database Performance Issues Defined

Using the above statistics will assist DBAs with finding some of the most common Oracle database performance problems. Here are a few:

• CPU Bottlenecks
  When the CPU approaches or exceeds maximum utilization performance problems begin. What is causing the CPU performance issues? Bad queries? Too many consecutive users? Solving CPU issues can greatly improve performance.
• I/O Capacity Issues
  Lack of I/O subsystem performance can translate to poor end-user performance. Increasing I/O capacity or decreasing I/O loads can assist in disk I/O utilization.
• Concurrency Issues
  Concurrent activities can lead to contention for shared resources that result in locks or waits for buffer cache. Monitoring session data can show DBAs where locks and waits are occurring while users wait for their request to be processed. Reducing or eliminating these with more efficient queries and database structures creates measurable performance improvements.
• Database Configuration Issues
  What configuration issues may be contributing to poor performance. Likely candidates include incorrect sizing of log files, archiving issues, excessive checkpoints, and sub-optimal parameter settings. Be sure to look for these first.
• Unexpected Performance Loss after Tuning
  This is a DBAs worse nightmare, but sometimes tuning SQL statement may result in decreased Oracle database performance. While the exact cause of such a regression isn't predictable, having it impact system performance can be avoided by using a test server to analyze SQL statement performance before launching to production environments.

Look for these and other common Oracle database performance issue when tuning your Oracle databases. Finding and repairing them will result increased database performance and decreased end user complaints.

Post by Josh Stein on behalf of Confio Software.

Compact Database Corruption in MS SQL Server

The concept of Database corruption still remains obscure in the minds of many database users and the very idea to deal with it would go in vain, if you do not plan out a perfect strategy at the right time. Most often, SQL database users come across compact database corruption and in majority of cases, the real culprit is not the database itself. 

The procedure described below shows how a page is read from the disk:

1. Initially, read the page from the disk. 

2. Now decrypt the page.

3. Calculate the checksum and verify with the expected value.

4. Determine whether it is the same page, which was expected as per the system pages. 

If steps ‘3’ and ‘4’ fail, you may receive the following errors on your screen: 

“Bad Checksum - idPage: %d, tyPage: %d, iPage: %d”

Or

“Page with valid ordinal not found - idPage: %d, iPage: %d”

 These errors indicate slight corruption in your database. Here are some possible reasons that could have triggered this corruption: 

·      
Improper shutting down of a device or you might have suspended a device and then resumed the operation. 

·      
If there are bugs in the underlying FAT/TFAT file system, you are very likely to face Compact file corruption. Even if you are using SD file for database storage, you may experience a similar thing. 

·       Moreover, SD cards might cause a number of problems during the Suspend/Resume cycles.  

However, it would be wrong to infer that Compact code bugs do not cause corruption. These bugs are more logical in nature. But, it would be right to say that they don't lead to physical corruptions, such as “checksum errors” or “page missing” errors. 

Indeed, compact implements a shadow paging mechanism to prevent corruption. When the Compact is performing a write operation to a file and you reboot the computer, it first writes the shadows of the original user data pages to the disk and then overwrites them with the shadows of the updated system pages. In this manner, the Compact performs a safe transaction write to the disk. Here, the changes are either completely reflected or not.    

About Author: Addision Philip is a technical writer and has written several articles on sql disaster recovery. You can see the articles from sql-server-recovery.blogspot.com.

15 ways to select text in a Word document

One of the most heavily document processor in every corner of the world is the Microsoft Word. It can be found in all aspect of activity like in work, school and at home. We use it to compose or created every type of document possible. But learning to use at first can be quite daunting but once we get the hang of it then its all breeze from one option to another. There are a lot of skills that we need to know and master; one of the first skills that we need to know and master in using the Word is how to select text. The most common method that we use in selecting text in Word is using the mouse to click and hold and then drag the pointer across the text that we need to select. Another common method of selecting text is we hold the shift button and then press the right arrow or left arrow from the keyboard to select a text or group of text. Also if we want to select all the text entirely we just need to double click on the word and it will highlight the word that we choose to double click on. So far these three ways are the most common way of selecting text in Word. But there are more ways of selecting text in word, in fact there are fifteen more ways and as implied by the author there more than 15 but the 15 ways on how to select text in Word are the easy method.

I want to share a very helpful and educational article which was emailed to me via subscriptions from ZDNET Asia. Since my purpose for bogging is help as stated in my blog I am sharing the link to read the complete content of the article. The title of the article is 15 ways to select text in a Word document by Susan Harkins. To have a preview of the content of the article the first paragraph is posted below:

 

Note:

Article Source: ZDNETAsia.com

 

Microsoft Word

 

15 ways to select text in a Word document

 

Besides entering text, selecting text is probably the most common task for most Word users. Almost every task begins by selecting something. Perhaps that's why there are so many ways to select text. The following list includes the methods I use. There are more - I left off a few because I've listed easier methods. If you have a favorite that I haven't listed, please share it with us.

To read the complete content of the article just click on the link provided since I am only allowed to post the first paragraph of the article by ZDNETAsia.com. I hope you find the article very interesting and educational.

Also many thanks to Ms. Eileen Yu the Senior Editor of ZDNETAsia.com for the guidance in sharing these wonderful articles by Ms. Susan Harkins. 

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Computer 101: Parts on the Outside Part-2

Now the CPU or the Central Processing Unit or System Unit contains the main inside hardware parts of the computer. Let see there the motherboard, the memory module(s), the CPU chip, the hard drive, DVD RW drive, the Power Supply Unit, the cooling fan and heat sink on top of the CPU. Lets see did i miss anything, well the motherboard contains all the connecting point of all the hardware devices mentioned above. Ah h theres the graphics card or video card, the sound card for high end users and the network or LAN card optional for others.

Inside a typical CPU

Today's motherboard comes with a built-in S/V/L, wait what an S/V/L. It stand for Sound, Video. and LAN. The only thing missing if your purchasing a new motherboard is the CPU and it cooling system and the memory module which is sold separately. But if your purchasing a whole computer set then that not applicable. Okay lets focus on the motherboard that is found inside every computer. The motherboard is where it all connects. The monitor using its cable is plug into the video card port which is connected or built-in the motherboard. The same is true for the mouse and keyboard, they connects via the PS2 or USB port which is usually built-in into the motherboard. The same is true to all external devices that we can connects to the computer, your Web cam, Mic, Speaker system, your smartphone, printer, scanner, external drive and a host of other devices. The most common port used in interconnection for today devices is the USB port. Your supposed to just plug it in and let it connect to your computer.

USB, LAN, PS2, MIC and Speaker port

Okay where suppose to blog about the external parts not the inside parts, but i thought i should give you a sneak preview of my nest post. Back to the external parts. The CPU Case is also important not just for appearance but also for the cooling system it can provide to your CPU unit. You should know where are those FAN located so would not be able to block them when placing your computer on tight spot. Also it should be strong enough to handle the daily grind that it would experience. The air should be able to get in and out of your CPU Case with the aid of those cooling fan properly positioned in your case design. The CPU is where all the work is done, the input, processing and output is done all in there. Make sure to also check on your CPU regularly so that dust build up and other stuff like small insects should not make your CPU there permanent abode. It should be check regularly, lets say weekly to maintain it in top form.

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