ForDevs

Shiretoko the codename for Mozilla firefox version 3.5, named after Japan’s famous World Heritage site “Shiretoko”. The name “Shiretoko” is actually derived from the word “Shiretok” meaning “the end of the land”.

It is a peninsula in eastern Hokkaido, where one can experience diverse natural environments all in a single peninsula. It has many lakes and waterfalls, such as the Shiretoko Goko Lakes and the Kamuiwakka falls, a cascading natural hot spring, as well as nearly 70 rivers and streams.

Discover Shiretoko

“Discover Shiretoko” campaign was born as a collaborative project between Japan’s Shiretoko Foundation and Mozilla Japan. Discover Shiretoko campaign also has a link to interFORest.

Mozilla Firefox codenamed latest 3.5 version as Shiretoko to support the protection of nature of Shiretoko.

Problem : Internal Server Error 500

Yesterday(Jun-26-2009) our blog was down and got the internal server error 500.So we immediately mailed Dreamhost(our host) support to see the issue and got a support ticket.

We Checked the  error log  which was stating “Premature end of script headers: index.php” error for every hit made.We came to know many had this problem previously in their sites mostly due to some script error in the plugin installed in wordpress.

While waiting for support reply we started to search the web for some solution about internal server error 500 and 503.

We followed some suggestion to solve error 500 like : -

1. Rename wp-cache-config.php

2. Disable the plugins.This we cant do because wordpress was installed in the root folder which made impossible to login and disable the plugins through web interface.

3. Just click Change fully hosted settings actually without making any changes in dreamhost panel

Unfortunately these didn’t work for us.

Today(Jun-27-2009) morning we got the reply mail from dremhost as

I was looking through your error logs and I found one issue that definitely could contribute to the 500 errors that you’re experiencing:

[Fri Jun 26 12:40:29 2009] [notice] mod_fcgid: too much  /home/fordevs/fordevs.com/index.php process(current:4, max:4), skip the spawn request

These errors can be contributed to several things:

1.) Plugins or extensions that are causing the site to load ineffectively, this is common with 3rd party scripts as they are   generally poorly coded.

2.) Your over all site is maxing out the allocated amount of RAM for your user. Unfortunately for security reasons we can’t reveal the amount available to each user, but this could be a contribution to the error.

How we solved the issue?

As the support mail also says it may be due to plugin we decided to solve it ourselves taking the suggestion from a forum discussion .We backed up the plugin folder from webftp and deleted all the plugin there.

After deleting the plugins the site was working fine.We could not exactly say which pulgin made the mess.

If you get the same error just try this but cant assure this method will work for you.

We a can get the list of all tables of a database in different ways : -

1.

SELECT *
FROM sys.TABLES

2.

SELECT *
FROM sysobjects
WHERE TYPE='U'

3.

SELECT *
FROM information_schema.TABLES
WHERE TABLE_TYPE = 'BASE TABLE'

To view the existing triggers in the database

SELECT * FROM sys.triggers
OR
SELECT * FROM sysobjects WHERE xtype='TR'

To view the existing triggers in a specified table

sp_helptrigger tablename

To drop a trigger

DROP TRIGGER triggername

To drop more triggers at a time

DROP TRIGGER [trigger1],[trigger2],[trigger3]...[triggern]

We find the relevant stuffs from the web using the search engines like Google,yahoo.There are also search engines dedicated only to search pdf files around web.Here are 5 good places where you can make your search for pdf files.

PDFGENI

PDFGeni is a dedicated pdf search engine for PDF e books, sheets, forms and documents.PDFGeni provides preview of the file and download link.
PDFGeni also provides Firefox pulgin and iphone edition which works on mac,windows,Linux.

PDF-SEARCH-ENGINE

PDF Search Engine is a book search engine search on sites, forums, message boards for pdf files.PDF Search Engine provides preview of the file, download link and also HTML format of the pdf.It supports different languages such as Spanish,Italian,Russian.

DATASHEET

Datasheet is pdf ebook datasheet manual search engine where we can search any ebook datasheet pdf files and download them. datasheet gives the link of most popular searchs and also shows the most relavent images of the search.

PDFDATABASE

PdfDatabase is another pdf search engine where we can search for pdf files and word documents.pdfdatabase provides preview of the file.

PDFBOOKS

PDF Books is prefect place to search for pdf ebooks,manuals.PDF Books provides preview of the file and download link.

“Morro” a new word buzzing from Microsoft about their new FREE anti virus for personal computers which could protect pc’s from malware including viruses, spyware, rootkits and trojans would be available by the end of 2009.

Microsoft quotes,

“Morro” will be available as a stand-alone download and offer malware protection for the Windows XP, Windows Vista and Windows 7 operating systems. When used in conjunction with the ongoing security and privacy enhancements of Windows and Internet Explorer, this new solution will offer consumers a robust, no-cost security solution to help protect against the majority of online threats.

Microsoft assures “Morro” will be able to provide the essential protections that consumers need without overusing system resources, and will help more consumers have better protection against online threats.

Microsoft’s Windows Live OneCare a commercial failure will be overtaken by morro in the coming days.Morro would be a great challenge for the leading anti virus companies in the market.

Source : Microsoft Press

Microsoft on May 28 2009 introduced their new search engine named bing,which will be available world wide at www.bing.com from June 3rd.

What’s new in this search engine? question may go through our mind. Microsoft Bing Team as the answer saying ,

We took a new approach to go beyond search to build what we call a decision engine. With a powerful set of intuitive tools on top of a world class search service, Bing will help you make smarter, faster decisions. We included features that deliver the best results, presented in a more organized way to simplify key tasks and help you make important decisions faster.

Let’s wait and see in the coming days the fight between Bing(Decision Engine) Vs King(Google Search Engine).

you can find more information on bing from discoverbing.com and decisionengine.com .

Combination of java and JDBC is very useful to lets the programmer run his/her program on different platforms. Java programs are secure, robust, automatically downloaded from the network.JDBC API enables Java applications to interact with different types of databases.

Some of the advantages of using Java with JDBC are
• Easy and economical
• Continued usage of already installed databases
• Development time is short
• Installation and version control simplified

JDBC does the following three things
• Establish connection with a database
• Send SQL statements
• Process the results

Network is nothing but a set of computers which are physically connected together.internet is a network of networks.

Protocols:
Different networks requires certain set of rules called protocols.java networking is done using TCP/IP protocol

Different types of protocols are also available in this protocol they are:

*Http(Hyper Text Transfer Protocol)
*FTP(File Transfer Protocol)
*SMTP(Simple Mail Transfer Protocol)
*NNTP(Network News Transfer Protocol)

Sockets:
Sockets is used to plug in just like a electronic sockets.it is essential that they should follow a set of rules to communicate called protocols.
TCP/IP as protocol for communication and IP addresses are the address of the sockets.

Client/Server:
A computer request some service from another computer,is called a client.one that processes the request is called server.A server waits till one of its clients makes a request.it can accept multiple connections at a time.Multi-threading is used to serve multiple users at the same time.

Internet Addresses:

Every computer are connected to a network has a unique IP address.An IP address is a 32-bit number which has four numbers separate by periods.it is possible to connect to the Internet either directly or by using internet service provider.By connecting directly to the internet,the computer is assigned with a permanent IP address.

InetAddress:
InetAddress is one class,which is used to encapsulate th IP address and the DNS.to create a instance of InetAddress class,factory methods are used as there are no visible constructors available for this class.

Methods:

static InetAddress getLocalHost()
//Returns InetAddress object representing local host

static InetAddress getByName(String hostname)
//Returns InetAddress for the host passed to it.

We would be curious to know who is sharing our IP in our shared hosting package.Here is a way to know that,Axandra free seo tool makes the task easy.

Not everybody can go for a dedicated IP which are better.So atleast we will know our neighbour’s which is good for some specific reasons,such as :-

• To check websites hosted on our server are not spammer.
• To check if porn websites are hosted on the same server we are sharing.
• To check with others to clarify if there is a downtime in our shared server.

To look in a postive side we can also make friends with whom we are sharing our IP.

Link :- http://www.axandra.com/free-online-seo-tool/shared-hosting-check.php