Oracle 参数 USE_DEDICATED_BROKER 官方解释,作用,如何配置最优化建议

本站中文解释

USE_DEDICATED_BROKER参数是Oracle数据库10g中引入的新参数,用于控制是否使用专用代理,用于在数据库中进行远程调用程序。在数据库通信连接之间,USE_DEDICATED_BROKER可以控制多个客户端在同一时间连接到同一实例的数据库时是否使用专门的代理,而不是使用数据库中的可用进程:

设置USE_DEDICATED_BROKER应考虑性能和安全性的收益:

USE_DEDICATED_BROKER的可能值如下:

TRUE:表示总是使用专用代理来处理远程调用程序,以保证安全性;
FALSE:表示在数据库忙碌时,使用可用进程处理远程调用程序,以提高性能;
AUTO:表示在客户端发起远程调用程序时,根据数据库是否忙碌自动决定是否使用专用代理。

正确的设置可以根据当前的需求进行调整,最佳设置是AUTO,遵循安全优先

官方英文解释

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msg.document.write(‘‘);</p> <p> msg.document.write(‘Footnote  ‘ + footnum);<br /> msg.document.write(”);<br /> msg.document.write(”);<br /> msg.document.write(‘ <![CDATA[ ');<br /> msg.document.write('h1 {text-align: center; font-size: 14pt;}');<br /> msg.document.write('fieldset {border: none;}');<br /> msg.document.write('form {text-align: center;}');<br /> msg.document.write(' ]]\u003e ‘);<br /> msg.document.write(‘</p> <div id="footnote"> <h1>Footnote  ‘ + footnum + ‘</p> <p>‘);<br /> msg.document.write(footnote);<br /> msg.document.write(‘</p> <fieldset>‘);<br /> msg.document.write(”);<br /> msg.document.write(”);<br /> msg.document.close();<br /> setTimeout(function() {<br /> var height = msg.document.getElementById(‘footnote’).offsetHeight;<br /> msg.resizeTo(598, height + 100);<br /> }<br /> , 100);<br /> msg.focus();<br /> }</p> <p>The script content on this page is for navigation purposes only and does not alter the content in any way.</p> <div> <p><code class="codeph">USE_DEDICATED_BROKER</code> determines how dedicated servers are spawned. </p> <div class="section"></div> <p> <!-- class="section" --></p> <div class="tblformal" id="GUID-643239D0-FABF-43C0-9791-BED46CB8FE07__GUID-16F339A0-F678-4E86-836E-E7A1F9A80B4E"> <div class="table-responsive"> <table cellpadding="4" cellspacing="0" class="Formal" title="" summary="This table describes the properties for this initialization parameter" width="100%" border="1" rules="rows"> <thead> <tr align="left" valign="top"> <th align="left" valign="bottom" width="25%" id="d224662e123">Property</th> <th align="left" valign="bottom" width="75%" id="d224662e126">Description</th> </tr> </thead> <tbody> <tr align="left" valign="top"> <td align="left" valign="top" width="25%" id="d224662e131" headers="d224662e123 "> <p><span class="bold">Parameter type</span></p> </td> <td align="left" valign="top" width="75%" headers="d224662e131 d224662e126 "> <p>Boolean</p> </td> </tr> <tr align="left" valign="top"> <td align="left" valign="top" width="25%" id="d224662e139" headers="d224662e123 "> <p><span class="bold">Default value</span></p> </td> <td align="left" valign="top" width="75%" headers="d224662e139 d224662e126 "> <p><code class="codeph">False</code> unless multithreaded Oracle is enabled<sup>Foot 1</sup></p> </td> </tr> <tr align="left" valign="top"> <td align="left" valign="top" width="25%" id="d224662e158" headers="d224662e123 "> <p><span class="bold">Modifiable</span></p> </td> <td align="left" valign="top" width="75%" headers="d224662e158 d224662e126 "> <p><code class="codeph">ALTER SYSTEM</code></p> </td> </tr> <tr align="left" valign="top"> <td align="left" valign="top" width="25%" id="d224662e167" headers="d224662e123 "> <p><span class="bold">Modifiable in a PDB</span></p> </td> <td align="left" valign="top" width="75%" headers="d224662e167 d224662e126 "> <p>No</p> </td> </tr> <tr align="left" valign="top"> <td align="left" valign="top" width="25%" id="d224662e175" headers="d224662e123 "> <p><span class="bold">Range of values</span></p> </td> <td align="left" valign="top" width="75%" headers="d224662e175 d224662e126 "> <p><code class="codeph">true | false</code></p> </td> </tr> <tr align="left" valign="top"> <td align="left" valign="top" width="25%" id="d224662e184" headers="d224662e123 "> <p><span class="bold">Basic</span></p> </td> <td align="left" valign="top" width="75%" headers="d224662e184 d224662e126 "> <p>No</p> </td> </tr> <tr align="left" valign="top"> <td align="left" valign="top" width="25%" id="d224662e192" headers="d224662e123 "> <p><span class="bold">Oracle RAC</span></p> </td> <td align="left" valign="top" width="75%" headers="d224662e192 d224662e126 "> <p>If specified, all instances must use the same value</p> </td> </tr> </tbody> </table> </div></div> <p> <!-- class="inftblhruleinformal" --></p> <p class="tablefootnote"><sup class="tablefootnote">Footnote 1 </sup></p> <p>Multithreaded Oracle is enabled by setting the <code class="codeph">THREADED_EXECUTION</code> initialization parameter to <code class="codeph">true</code>. </p> <div class="section"> <p>When this parameter is set to <code class="codeph">false</code>, the listener spawns a dedicated server directly. </p> <p>When this parameter is set to <code class="codeph">true</code>, the listener hands the connection to a dedicated connection broker that spawns the dedicated server. Unlike the listener, the dedicated connection broker is a database process, and hence it can implement policies leveraging database information before the spawn. </p> <p>To enable the dedicated connection broker using the <code class="codeph">USE_DEDICATED_BROKER</code> initialization parameter, you must: </p> <ol> <li> <p>Set the <code class="codeph">USE_DEDICATED_BROKER</code> initialization parameter to <code class="codeph">true</code>. </p> </li> <li> <p>Set the <code class="codeph">DEDICATED_THROUGH_BROKER_</code><span class="italic">listener-name</span> parameter to <code class="codeph">on</code> in the listener.ora file. </p> </li> </ol> <p>Performing these two steps configures the Connection Broker Process (N<span class="italic">nnn</span>). </p> <div class="infoboxnote" id="GUID-643239D0-FABF-43C0-9791-BED46CB8FE07__GUID-0F17CA96-523F-4EA6-91F2-EBA252E48D72"> <p class="notep1">Note:</p> <p>When multithreaded Oracle is enabled, the dedicated connection broker process is also enabled and used.</p> </p></div> <p>Configuration of the brokers is controlled by the <code class="codeph">CONNECTION_BROKERS</code> initialization parameter. </p> <div class="infoboxnotealso" id="GUID-643239D0-FABF-43C0-9791-BED46CB8FE07__GUID-E22C6C1A-D27F-4D37-9A01-C0F1E0DC8E2D"> <p class="notep1">See Also:</p> <ul style="list-style-type: disc"> <li> <p><span class="q">“CONNECTION_BROKERS”</span> for more information about configuring brokers </p> </li> <li> <p>Table F-1 for more information about the Connection Broker Process (N<span class="italic">nnn</span>) </p> </li> <li> <p><span class="q">“THREADED_EXECUTION”</span> for more information about enabling multithreaded Oracle </p> </li> <li> <p><span><cite>Oracle Database Net<br /> Services Reference</cite></span> for more information about the <code class="codeph">DEDICATED_THROUGH_BROKER_</code><span class="italic">listener-name</span> parameter in the listener.ora file </p> </li> </ul></div> </p></div> <p> <!-- class="section" --> </div> </div> <div id="pay-single-box"></div> <div class="entry-tags"> <a href="https://www.dbs724.com/tag/oracle%e4%bc%98%e5%8c%96" rel="tag"> Oracle优化 </a> <a href="https://www.dbs724.com/tag/oracle%e5%86%85%e9%83%a8%e8%a7%86%e5%9b%be" rel="tag"> oracle内部视图 </a> <a href="https://www.dbs724.com/tag/oracle%e5%8f%82%e6%95%b0" rel="tag"> oracle参数 </a> <a href="https://www.dbs724.com/tag/oracle%e5%bc%80%e5%8f%91" rel="tag"> oracle开发 </a> <a href="https://www.dbs724.com/tag/oracle%e6%95%85%e9%9a%9c%e5%a4%84%e7%90%86" rel="tag"> oracle故障处理 </a> <a href="https://www.dbs724.com/tag/oracle%e6%95%99%e7%a8%8b" rel="tag"> oracle教程 </a> <a href="https://www.dbs724.com/tag/oracle%e7%bb%b4%e6%8a%a4" rel="tag"> oracle维护 </a> </div> <div class="article-copyright"><br/><a href="https://www.dbs724.com">数据运维技术</a> » <a href="https://www.dbs724.com/54373.html">Oracle 参数 USE_DEDICATED_BROKER 官方解释,作用,如何配置最优化建议</a></div> <div class="ripro_gg_wrap pc"></div><div class="article-footer"> <div class="xshare"> <span class="xshare-title">分享到:</span> <a href="" etap="share" data-share="qq" class="share-qq"><i class="fa fa-qq"></i></a> <a href="" etap="share" data-share="weibo" class="share-weibo"><i class="fa fa-weibo"></i></a> <a href="javascript:;" class="btn-bigger-cover share-weixin" data-nonce="3def1840af" data-id="54373" data-action="create-bigger-image" title="海报分享" id="bigger-cover"><i class="fa fa-paper-plane"></i></a> </div> </div> </div> </div> </article> <div class="entry-navigation"> <nav class="article-nav"> <span class="article-nav-prev">上一篇<br><a href="https://www.dbs724.com/24279.html" rel="prev">ORA-26939: The string capture “string” is disabled. 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