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MySQL Proxy Guide MySQL Proxy Guide Abstract This is the MySQL Proxy extract from the MySQL Reference Manual. This document covers MySQL Proxy !#!amp!#!mysql-proxy-current-version!#!;!#!. Document generated on: 2011-07-22 (revision: 26919) Copyright © 1997, 2011, Oracle and/or its affiliates. All rights reserved. This software and related documentation are provided under a license agreement containing restrictions on use and disclosure and are protected by intellectual property laws. Except as
  MySQL Proxy Guide  MySQL Proxy Guide Abstract This is the MySQL Proxy extract from the MySQL Reference Manual. This document covers MySQL Proxy!#!amp!#!mysql-proxy-current-version!#!;!#!.Document generated on: 2011-07-22 (revision: 26919) Copyright © 1997, 2011, Oracle and/or its affiliates. All rights reserved.This software and related documentation are provided under a license agreement containing restrictions on use and disclosure and are protected by intel-lectual property laws. Except as expressly permitted in your license agreement or allowed by law, you may not use, copy, reproduce, translate, broadcast,modify, license, transmit, distribute, exhibit, perform, publish, or display any part, in any form, or by any means. Reverse engineering, disassembly, ordecompilation of this software, unless required by law for interoperability, is prohibited.The information contained herein is subject to change without notice and is not warranted to be error-free. If you find any errors, please report them to usin writing.If this software or related documentation is delivered to the U.S. Government or anyone licensing it on behalf of the U.S. Government, the following no-tice is applicable:U.S. GOVERNMENT RIGHTS Programs, software, databases, and related documentation and technical data delivered to U.S. Government customersare commercial computer software or commercial technical data pursuant to the applicable Federal Acquisition Regulation and agency-specific sup-plemental regulations. As such, the use, duplication, disclosure, modification, and adaptation shall be subject to the restrictions and license terms setforth in the applicable Government contract, and, to the extent applicable by the terms of the Government contract, the additional rights set forth in FAR52.227-19, Commercial Computer Software License (December 2007). Oracle USA, Inc., 500 Oracle Parkway, Redwood City, CA 94065.This software is developed for general use in a variety of information management applications. It is not developed or intended for use in any inherentlydangerous applications, including applications which may create a risk of personal injury. If you use this software in dangerous applications, then youshall be responsible to take all appropriate fail-safe, backup, redundancy, and other measures to ensure the safe use of this software. Oracle Corporationand its affiliates disclaim any liability for any damages caused by use of this software in dangerous applications.Oracle is a registered trademark of Oracle Corporation and/or its affiliates. MySQL is a trademark of Oracle Corporation and/or its affiliates, and shallnot be used without Oracle's express written authorization. Other names may be trademarks of their respective owners.This software and documentation may provide access to or information on content, products, and services from third parties. Oracle Corporation and itsaffiliates are not responsible for and expressly disclaim all warranties of any kind with respect to third-party content, products, and services. Oracle Cor-poration and its affiliates will not be responsible for any loss, costs, or damages incurred due to your access to or use of third-party content, products, orservices.This document in any form, software or printed matter, contains proprietary information that is the exclusive property of Oracle. Your access to and useof this material is subject to the terms and conditions of your Oracle Software License and Service Agreement, which has been executed and with whichyou agree to comply. This document and information contained herein may not be disclosed, copied, reproduced, or distributed to anyone outside Oraclewithout prior written consent of Oracle or as specifically provided below. This document is not part of your license agreement nor can it be incorporatedinto any contractual agreement with Oracle or its subsidiaries or affiliates.This documentation is NOT distributed under a GPL license. Use of this documentation is subject to the following terms:You may create a printed copy of this documentation solely for your own personal use. Conversion to other formats is allowed as long as the actual con-tent is not altered or edited in any way. You shall not publish or distribute this documentation in any form or on any media, except if you distribute thedocumentation in a manner similar to how Oracle disseminates it (that is, electronically for download on a Web site with the software) or on a CD-ROMor similar medium, provided however that the documentation is disseminated together with the software on the same medium. Any other use, such as anydissemination of printed copies or use of this documentation, in whole or in part, in another publication, requires the prior written consent from an au-thorized representative of Oracle. Oracle and/or its affiliates reserve any and all rights to this documentation not expressly granted above.For more information on the terms of this license, for details on how the MySQL documentation is built and produced, or if you are interested in doing atranslation, please visitMySQL Contact & Questions.For additional licensing information, including licenses for third-party libraries used by MySQL products, seePreface and Notes.If you want help with using MySQL, please visit either theMySQL ForumsorMySQL Mailing Listswhere you can discuss your issues with other MySQL users.For additional documentation on MySQL products, including translations of the documentation into other languages, and downloadable versions in vari-ety of formats, including HTML and PDF formats, see theMySQL Documentation Library.  MySQL Proxy The MySQL Proxy is an application that communicates over the network using the MySQL network protocol and provides communica-tion between one or more MySQL servers and one or more MySQL clients. In the most basic configuration, MySQL Proxy simply in-terposes itself between the server and clients, passing queries from the clients to the MySQL Server and returning the responses fromthe MySQL Server to the appropriate client.Because MySQL Proxy uses the MySQL network protocol, it can be used without modification with any MySQL-compatible client thatuses the protocol. This includes the mysql command-line client, any clients that uses the MySQL client libraries, and any connectorthat supports the MySQL network protocol.In addition to the basic pass-through configuration, the MySQL Proxy is also capable of monitoring and altering the communicationbetween the client and the server. Query interception enables you to add profiling, and interception of the exchanges is scriptable usingthe Lua scripting language.By intercepting the queries from the client, the proxy can insert additional queries into the list of queries sent to the server, and removethe additional results when they are returned by the server. Using this functionality you can return the results from the srcinal query tothe client while adding informational statements to each query, for example, to monitor their execution time or progress, and separatelylog the results.The proxy enables you to perform additional monitoring, filtering, or manipulation of queries without requiring you to make any modi-fications to the client and without the client even being aware that it is communicating with anything but a genuine MySQL server.This documentation covers MySQL Proxy 0.8.0. Warning MySQL Proxy is currently an Alpha release and should not be used within production environments. Important MySQL Proxy is compatible with MySQL 5.0 or later. Testing has not been performed with Version 4.1. Please providefeedback on your experiences using theMySQL Proxy Forum.iv
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