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Un servidor virtual privado (VPS, del inglés virtual private server) es un método de particionar un servidor físico en varios servidores de tal forma que todo funcione como si se estuviese ejecutando en una única máquina. Cada servidor virtual es capaz de funcionar bajo su propio sistema operativo y además cada servidor puede ser reiniciado de forma independiente.  La práctica de particionar un único servidor físico para que funcione como varios servidores virtuales ya comenzó con los mainframes y ha vuelto a resurgir con el desarrollo de la virtualización y las tecnologías para otras arquitecturas. Al funcionar un VPS con su propia copia del sistema operativo, los clientes tienen nivel de acceso root o de superusuario y por tanto, pueden instalar cualquier tipo de software que pueda ser ejecutado bajo este sistema operativo. Algunos programas no ejecutan bien en entornos virtuales, incluyendo firewalls, clientes antivirus e incluso otras herramientas virtuales; algunos VPS pr

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Downloads WampServeris an open source project, free to use (GPL licence). If you think our work deserves it and you want to help us, you can make a donation with paypal . WARNING : do not try to install WampServer 2 over WAMP5. If WAMP5 is installed on your computer, save your data, uninstall it and delete the WAMP5 directory before installing WampServer 2. DOWNLOAD WampServer 2.0i (July 11 2009) Apache 2.2.11 PHP 5.3.0 MySQL 5.1.36 Phpmyadmin size: 16Mo

1. Networking Overview 1. Identify networking business trends Is it necessary to illustrate ? In a Nutshell:Client-Server 2. Describe Oracle networking solutions Oracle networking environments are based on two concepts: Distributed Processing: Client and servers exist as separate logical entities on separate physical machines. This configuration allows for the division of labor where resources are allocated efficiently between a client workstation and the server machine. Stack Communications: The concept of distributed processing relies on the ability of computers separated by both design and physical location to communicate and interact with each other. This is accomplished through a process known as stack communications. The layers in a typical Oracle communications stack are similar to those of a standard OSI communications stack In an Oracle client-server transaction, information passes through the fol

Tuning Overview List the roles associated with the database tuning process The DBA, the application developer, management, the system administrator, the network administrator. Define the steps associated with the tunning process Considered on the ROI (Return on Investment) outline here are the tunning recommendation in order: Do a proper logical design: In practice this often means more tables with fewer rows per table. In turn, this means the capability for faster searching. The fewer rows that are stored and must be searched through, regardless of the search techinque, the quicker you'll be able to find what you're looking for. Do a proper physical design : Separate the datafiles (tablespaces ) into different disks to avoid I/O contention , use striping. Redesign if necessary Sometimes the best way to correct the database without extensive tuning efforts is a re-analysis and redesign. Consider redesign when the initial design

Oracle Architecture Components Describe the Oracle Server Architecture and its main components. Oracle is basically formed from : An instance: Which is basically a set of memory structures and background processes that cache the most used data, and serve as an exchange point between the users(clients) and the datafiles that have the information on disks. Datafiles : These datafiles are located on hard disks, and they compose all the data that is stored in Oracle,control files,tablespaces, redo-log files,etc. Oracle-Software : This contains the Oracle-kernel which is much like a sub-operating system on top of the host system , because it coordinates the memory-structures and processes (Instance) and the file updates (Datafiles) on the hard drives. List the Structures involved in connecting a user to an Oracle Instance The Oracle server has a set of memory structures and operating process called "The Instance" which