Redhat / Centos LAMP Setup Guide


If you're setting up a RedHat or Centos server from a VPS server without a control panel, setting up a LAMP (Linux, Apache, MySQL and PHP) can be a nuisance. Here is a basic setup guide for bringing your Linux server for LAMP development environment.

Salesforce Visualforce Overview


Visualforce is a technology used in for building custom user interfaces. It is analogous to Java Server Pages (JSP) with Java Server Faces (JSF) in Java technology. Visualforce uses Apex classes (controllers) containing business logic, and visualforce pages and visualforce components containing the presentation.

Salesforce Apex Developer's Guide


This guide is written per SFv31, so if you're working in a future version -- you may have a slightly different menu structure. If you are new to Salesforce, you may want to create an account at This will allow you to create a developer ORG, which you may use to develop SF applications.

[SOLVED] MySQL Error 1016: Can't open file: 'user_tracking.MYD'. (errno: 145)


We've been running osCommerce website flawlessly for over two years, but recently encountered the following MySQL error.

1016: Can't open file: 'user_tracking.MYD'. (errno: 145)

We're running mysql 3.23.58 version, and recently restarted the mysqld by killing the mysql processes. This may have corrupted the table file named above.

You may use phpMyAdmin to "repair" the corrupted table. Or, use the command line from the mysql client.

[SOLVED] mysqldump: Can't get CREATE TABLE for table


Have you tried to make a backup of a MySQL database, and run into a problem with errors?

[SOLVED] Zen Cart incorrect time zone


Our Zen Cart installation has incorrect time zone. On the orders page, the orders are placed +5 hours from current date/time. This is very annoying problem as the server is showing correct time, and PHP is configured with correct time zone in /etc/php.ini file. Also, the correct time zone is set in the includes/application_top.php file.

[SOLVED] ERROR 1206 (HY000): The total number of locks exceeds the lock table size


We have a customized Openbravo POS v2.2 running with a dozen workstations operating 24x7 a year around. The size of the database has grown to 10GB, and the performance started to degrade so we decided to archive old data and start fresh. According to Openbravo POS administrative guide, we performed a DELETE operation on transaction data.

[SOLVED] MySQL Crash with Fatal error: cannot allocate memory for the buffer pool


We have a dozen websites mostly running Wordpress, and one Drupal website on Digital Ocean with a 1GB instance. The server was running flawlessly for 6 months, and then the MySQL starts to crash every few days unexpectly with the following error in the mysql error log.

How to install UTM tracking code? (Uses ga.js)


The UTM (Urchin Traffic Monitor) tracking code is used to track traffic source, medium and campaign; and allows a businesses to track conversion funnel from referral site. With an introduction of Google Tag Manager, some folks are unclear how to implement UTM tracking codes into their HTML pages. The following two simple steps will guide you through installing the UTM javascript snippets into your web pages.

1. Add the classic Google Analytics library, ga.js from Google CDN.

How to fix blank screen or White Screen of Death?


One of the common symptom being seen during PHP development is White Screen of Death, a blank screen instead of expected page. If you "View Source" on white page, it will often contains no title, no header or body and there are no errors - a simple blank page.


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