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Dedicated Vs. Shared Server Configuration

January 21, 2014

shared server configuration Ask the Expert What is the difference between dedicated and shared server configuration? Please tell me how to configure shared server configuration. In which situations should we use these configurations? Requires Free Membership to View TechTarget and its partners. Privacy Policy Terms of Use . When a user makes a connection to the Oracle instance, a process is created on the server. For Unix/Linux servers, this process is called 'oracleSID' where "SID" is the Oracle identifier. This process is dedicated to that one user's session. Should another user connect to the Oracle instance, another process is dedicated to that user's session. These dedicated server processes act as a go-between from the application to the Oracle instance and back again. Each of these dedicated server processes consumes memory on the database server. As the number of concurrent connections increases, the amount of memory required by all dedicated server processes increases as well. The database server may not have enough physical memory (RAM) for all of the server processes to support all of the concurrent application users. Additionally, many of the dedicated server processes may be idle. They are typically waiting for the end user to submit another request to the database. After all, human users are not as fast as computer systems. It takes time for the user to read the information presented in the application and submit another request to the database. So the dedicated server processes can use up a lot of memory for many users who are idle at a specific point in time. At another point in time, the user may be doing something, but other users are idle. Enter shared server. With shared server (formally called Multi-Threaded Server or MTS), users share the server connections. Instead of a one-to-one ratio between server processes and end users, there is a one-to-many replationship. One shared server process is used by many connected application users. providing the means to connect many, many users to the instance all at the same time.
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Definition of a Dedicated Server

Several types of dedicated servers exist. File servers, web servers and FTP servers are the ones that are used most frequently. Application servers are used for a single application, as the name for this type of server applies. File Servers As the name implies, a file server is used for the storage of files. It provides extra storage space and lets people handle files from their own computer or from other computers on the network. The primary requirement for a file server is that it has ample hard-drive space. Web Servers Web servers often run the Unix/Linux program Apache to allow a user to access stored web pages. (Windows versions of Apache are available, and Apache is not the only web serving program.) Web servers must have enough storage space to handle the stored pages, but they must also be have the programs necessary to interpret scripting languages such as PHP and Javascript. FTP Servers FTP servers are a specialized type of file server that allow the user to access files over the Internet. Anonymous FTP servers do not require passwords. Internet tradition requires that an anonymous FTP user types in his email address as the password for an anonymous FTP site. Application Servers Application servers are used to run or share a specific application. They can cut down on the software licensing costs of a business or allow space to be saved on workstations on the network by not having the hard drives filled with the software. Sometimes, application servers are connected to "dumb terminals," and all of the processing takes place on the server itself. Dumb terminals are workstations that simply connect to a central computer and have little or no processing power of their own. Audio/Video Servers Application servers are used to run or share a specific application. They can cut down on the software-licensing costs of a business or allow space to be saved on workstations on the network by not having the hard drives filled with the software. Sometimes, application servers are connected to "dumb terminals" and all of the processing takes place on the server itself. Dumb terminals are workstations that simply connect to a central computer and have little or no processing power of their own. Other Dedicated Server Types Other dedicated server types exist, especially for the Internet. These include news servers that handle email newsgroups and IRC (Internet Relay Chat) servers that handle the popular chat client. An Interesting Fact The original Xbox can be converted to a Linux file server, if the user re-formats the hard drive that comes with the unit.
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