High Concurrency MySQL


Domas Mituzas (Facebook) speaks at the 2010 O’Reilly MySQL User Conference & Expo. Slides – assets.en.oreilly.com From the official conference description at en.oreilly.com War and peace stories from Facebook how to detect, analyze and fix problems below, inside and above overloaded MySQL servers. This covers concurrecy problems that appear in real world environments, beyond labs and benchmarks and what tools have to be built to understand and contain the load.

How to set MySQL date from a result set to a PHP datetime object?

i am trying to set the date and time (DateTime stored in mysql database) to a php DateTime object, one way is to override the class some how to make that happen, but is there any easier way than that?e. g. $date = new DateTime();$date->setDate($mysql_resultset[‘date_time’]);and then format that date according and display it.

PHP 6 and MySQL 5 for Dynamic Web Sites: Visual QuickPro Guide

  • ISBN13: 9780321525994
  • Condition: NEW
  • Notes: Brand New from Publisher. No Remainder Mark.

Product Description
It hasn’t taken Web developers long to discover that when it comes to creating dynamic, database-driven Web sites, MySQL and PHP provide a winning open source combination. Add this book to the mix, and there’s no limit to the powerful, interactive Web sites that developers can create. With step-by-step instructions, complete scripts, and expert tips to guide readers, veteran author and database designer Larry Ullman gets right down to business: After grounding readers with separate discussions of first the scripting language (PHP) and then the database program (MySQL), he goes on to cover security, sessions and cookies, and using additional Web tools, with several sections devoted to creating sample applications. This guide is indispensable for intermediate- to advanced level Web designers who want to replace their static sites with something dynamic. In this edition, the bulk of the new material covers the latest versions of both technologies: PHP 6 (due . . . More >>

PHP 6 and MySQL 5 for Dynamic Web Sites: Visual QuickPro Guide

NetBeans IDE 6.7 Conexión y consulta de BBDD MySql (Java EE 6)


Veamos como preparar NetBeans para que detecte nuestro SGBD MySQL donde tenemos las tablas con las que vamos a trabajar en nuestraa aplicación distribuida Java EE 6. En otros videotutoriales veremos como recuperar información desde esas tablas mediante técnicas avanzadas de mapeo Objeto-Relacional aprovechando las ayudas incluidas en el IDE. La idea es ir construyendo los componentes necesarios para crear aplicaciones empresariales multicapa, distribuibles y altamente escalables.

Flash PHP MySQL CMS – Content Management System Website Tutorial CS3 + CS4


Source Files – www.developphp.com In this Flash ActionScript 3.0, PHP, and MySQL tutorial video and source file download you can learn how to build slick CMS(Content Management Systems) for your client websites or for projects that require many people to input data. A Content Management System made in Flash makes editing content easier visually and physically for the user or client you have created it for. This method uses one PHP control file, one MySQL database(with 2 tiny tables in it), and a flash application that is programmed intelligently enough to display dynamic content from a MySQL database, or any database type system. We also have tutorials that show how to use a flat text file as database, or an XML file as databse if your environment cannot run MySQL easily. Brought to you by FlashBuilding.com

What is the command-line code to load a SQL script in notepad to Oracle 10g express?

Question:

I made a script using notepad but what is the command line code to load it into Oracle express 10g? In MySQL it is just source C: or where ever I have it located.

Answer:

Follow these steps:

  1. Save your notepad file with . sql extension. c:\filename.sql
  2. Run it in the command prompt
    c:>sqlplus “username/password” @”c:\filename.sql”
  3. Now you should  get the result of your script. That’s it.
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Performance Tuning Best Practices for MySQL


Google TechTalks April 28, 2006 Jay Pipes Jay Pipes is a co-author of the recently published Pro MySQL (Apress, 2005), which covers all of the newest MySQL 5 features, as well as in-depth discussion and analysis of the MySQL server architecture, storage engines, transaction procesing, benchmarking, and advanced SQL scenarios. You can also see his name on articles appearing in Linux Magazine and can read more articles about MySQL at his website. ABSTRACT Learn where to best focus your attention when tuning the performance of your applications and database servers, and how to effectively find the “low hanging fruit” on the tree of bottlenecks. It’s not rocket science, but with a bit of acquired…

Table Corruption in MySQL Database

A Request Tracker (RT) enables you to keep a record of all the operations performed in MySQL database. RT creates a session by using a MySQL database, a PERL (Practical Extraction and Report Language) based main engine and front-end web and mail interfaces. However, if RT is unable to store your transactions made into the MySQL component, chances are that your MySQL component is either corrupt or missing. Corruption of MySQL database component can occur due to MySQL database server malfunctioning, operating system failure, malicious software like virus and more. In such situations, you need to recover the MySQL database component by restoring it from the latest backup. But, if you have not maintained any backup or backup falls short of providing the required data, then you should repair your corrupted MySQL component to extract data from it. To do so, you need to use advanced MySQL Database Repair application.

Consider a practical scenario where you encounter the below error message when you attempt to save some changes in session_data table:

“RT couldn’t store your session. This may mean that that the directory ‘/extra/requesttracker/current/var/session_data’ isn’t writable or a database table is missing or corrupt.”

Cause:

The root cause behind occurrence of above error message is that the session_data table is either missing or corrupt.

Continue reading “Table Corruption in MySQL Database”

MySQL official emphasizes GPL, improvements

MySQL official emphasizes GPL, improvements
MySQL, the open source database now property of Oracle, has stayed the same in such aspects as its availability under the GPL, but some traits will change under its new management. For example, Oracle will be more tight-lipped about product plans, a MySQL official said Thursday.

Read more on InfoWorld via Yahoo! News

Head First PHP & MySQL

  • ISBN13: 9780596006303
  • Condition: USED – VERY GOOD
  • Notes:

Product Description
If you’re ready to create web pages more complex than those you can build with HTML and CSS, Head First PHP & MySQL is the ultimate learning guide to building dynamic, database-driven websites using PHP and MySQL. Packed with real-world examples, this book teaches you all the essentials of server-side programming, from the fundamentals of PHP and MySQL coding to advanced topics such as form validation, session IDs, cookies, database queries and joins, file I/O opera… More >>

Head First PHP & MySQL

Cpanel Downgrade Mysql 4.1.x to Mysql 4.0.xx

I have ordered a new server Centos 4.3 with Cpanel WHM 10.8.0 cPanel 10.8.2-R119.

When I have transfered old server all accounts to this new server, Some sites mysql database had a few problems. I found the new server is MySQL 4.1.xx and my old server is MySQL 4.0.xx. So i decide to downgrade MYSQL 4.1.X to MySQL 4.0.xx.

cPanel Tweak Settings only have MYSQL 4.1 or MYSQL 5.0 , so I vi /var/cpanel/cpanel.config,change mysql-version=4.1 into mysql-version=4.

then, you have to do the following:

cp -fr /var/lib/mysql /var/lib/mysql.old

rm -fr /var/lib/mysql

rm -f /usr/sbin/mysqld

/scripts/mysqlup—force

when installed mysql ,I found a problem.

……………………………………………………

Attempting to restart mysql

Waiting for mysql to restart…. . . . . . . . . . . finished.

mysql status