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<h1 class="topictitle1">Modifying a Parameter Template</h1>
<div id="body1606725879766"><p id="nosql_07_0003__p2518171111612">You can modify parameters in a custom parameter template to bring out the best performance of the service.</p>
<p id="nosql_07_0003__p18536553173910">Parameter values in default parameter templates cannot be changed.</p>
<div class="note" id="nosql_07_0003__note18110437214655"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="nosql_07_0003__p28776210214655">Though parameter values in a default template cannot be changed, you can view details about a default parameter template. If a custom parameter template is set incorrectly, the database startup may fail. You can re-configure the custom parameter template according to the configurations of the default parameter template.</p>
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<div class="section" id="nosql_07_0003__section1350519549338"><h4 class="sectiontitle">Modifying Parameters in a Custom Parameter Template</h4><ol id="nosql_07_0003__ol24590471123443"><li id="nosql_07_0003__li1374519431356"><span><a href="nosql_login.html">Log in to the GeminiDB console.</a></span></li><li id="nosql_07_0003__li8876359550"><span>In the navigation pane, choose <span class="uicontrol" id="nosql_07_0003__uicontrol1588454504389"><b>Parameter Templates</b></span>.</span></li><li id="nosql_07_0003__li35081232123443"><span>On the <span class="uicontrol" id="nosql_07_0003__uicontrol4340972423949"><b>Custom Templates</b></span> tab, click the target parameter template.</span></li><li id="nosql_07_0003__li25101895123443"><span>Change parameter values as required.</span><p><ul id="nosql_07_0003__ul972012817919"><li id="nosql_07_0003__li1472012281590">To save the modifications, click <strong id="nosql_07_0003__b151014317418">Save</strong>.</li><li id="nosql_07_0003__li4720328397">To cancel the modifications, click <strong id="nosql_07_0003__b1019945014616">Cancel</strong>.</li><li id="nosql_07_0003__li197201281893">To preview the modifications, click <strong id="nosql_07_0003__b56681357472">Preview</strong>.</li></ul>
</p></li><li id="nosql_07_0003__li779413161646"><span>After parameters are modified, click <strong id="nosql_07_0003__b9714161211477">Change History</strong> to view parameter modification details.</span><p><div class="p" id="nosql_07_0003__p8509171184011">For how to view parameter modification details, see <a href="nosql_07_0012.html">Viewing Parameter Change History</a>.<div class="notice" id="nosql_07_0003__note5934144343917"><span class="noticetitle"><img src="public_sys-resources/notice_3.0-en-us.png"> </span><div class="noticebody"><ul id="nosql_07_0003__ul793444320398"><li id="nosql_07_0003__li6933124393916">The modifications take effect only after you apply the parameter template to DB instances. For details, see <a href="nosql_07_0008.html">Applying a Parameter Template</a>.</li><li id="nosql_07_0003__li1393314303912">The change history page displays only the modifications of the last seven days.</li></ul>
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<div class="section" id="nosql_07_0003__section6835201911319"><h4 class="sectiontitle">Modifying Parameters of a Specified DB Instance</h4><ol id="nosql_07_0003__ol12454631131310"><li id="nosql_07_0003__li118642561132"><span><a href="nosql_login.html">Log in to the GeminiDB console.</a></span></li><li id="nosql_07_0003__li171123613133"><span>In the navigation pane, choose <strong id="nosql_07_0003__b140787384224646">Instances</strong>. Click the target instance. The <strong id="nosql_07_0003__b98774528324646">Basic Information</strong> page is displayed.</span></li><li id="nosql_07_0003__li098145717147"><span>In the navigation pane on the left, choose <strong id="nosql_07_0003__b890623111481">Parameters</strong>. On the displayed page, modify parameters as required.</span><p><ul id="nosql_07_0003__ul12516105219186"><li id="nosql_07_0003__li10290206131911">To save the modifications, click <strong id="nosql_07_0003__b192321241154810">Save</strong>.</li><li id="nosql_07_0003__li52900617194">To cancel the modifications, click <strong id="nosql_07_0003__b148981843144819">Cancel</strong>.</li><li id="nosql_07_0003__li1229020617197">To preview the modifications, click <strong id="nosql_07_0003__b68861344154813">Preview</strong>.</li></ul>
</p></li><li id="nosql_07_0003__li470685112018"><span>After parameters are modified, click <strong id="nosql_07_0003__b937704612481">Change History</strong> to view parameter modification details.</span><p><div class="p" id="nosql_07_0003__p128614418400">For how to view parameter modification details, see <a href="nosql_07_0012.html">Viewing Parameter Change History</a>.<div class="notice" id="nosql_07_0003__note73669401402"><span class="noticetitle"><img src="public_sys-resources/notice_3.0-en-us.png"> </span><div class="noticebody"><div class="p" id="nosql_07_0003__p436544020401">After the parameter template is modified, choose whether to reboot the instance based on the information in the <span class="uicontrol" id="nosql_07_0003__uicontrol105191050142915"><b>Effective upon Reboot</b></span> column.<ul id="nosql_07_0003__ul153666407409"><li id="nosql_07_0003__li1836664054014">If the value is <strong id="nosql_07_0003__b168602311824741">Yes</strong> and the instance status on the <strong id="nosql_07_0003__b10605249924741">Instances</strong> page is <span class="uicontrol" id="nosql_07_0003__uicontrol105829522524741"><b>Pending restart</b></span>, restart the instance to apply the changes.</li><li id="nosql_07_0003__li236684017404">If the value is <strong id="nosql_07_0003__b154821813165112">No</strong>, the modifications take effect immediately.</li></ul>
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<div class="parentlink"><strong>Parent topic:</strong> <a href="nosql_07_0001.html">Parameter Template Management</a></div>
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