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                # 集群參數管理概述 OceanBase 集群配置可以通過集群參數和租戶參數來設定。通過參數的設定可以使 OceanBase 數據庫的行為符合您業務的要求。 OceanBase 數據庫的集群參數分為集群級別和租戶級別,同時參數分為動態生效和重啟生效兩類。通過集群參數的設置可以控制集群的負載均衡、合并時間、合并方式、資源分配和模塊開關等功能。 系統租戶可以查看和設置所有其他租戶的參數(包括 sys 租戶)。普通租戶只能設置自己租戶的參數。 不同租戶對集群參數的查看和修改級別如下表所示。 <table data-tag="table" id="table-qfk-l3k-92v" class="table"><colgroup width="115" span="1" data-tag="col" id="col-1a7-lox-zec" colwidth="1*" colnum="1" colname="col1" style="width:20%" class="col"></colgroup><colgroup width="240" span="1" data-tag="col" id="col-0az-2gv-g1p" colwidth="2*" colnum="2" colname="col2" style="width:40%" class="col"></colgroup><colgroup width="240" span="1" data-tag="col" id="col-xif-ilk-76e" colwidth="2*" colnum="3" colname="col3" style="width:40%" class="col"></colgroup><thead id="thead-1d2-uyg-5g8" class="thead"><tr id="tr-8ho-5j0-m4c"><th id="td-zqd-mbr-nv3"><p id="p-q5i-wzs-i30">租戶類型</p></th><th id="td-1mu-w6i-5il"><p id="p-zwr-m2i-8lj">參數查看</p></th><th id="td-kb9-evm-zj4"><p id="p-c0v-y2o-4er">參數設置</p></th></tr></thead><tbody data-tag="tbody" id="tbody-jeb-gbe-evl" class="tbody"><tr data-tag="tr" id="tr-67q-2yw-rhc" class="tr"><td data-tag="td" id="td-6bt-tic-90q" class="td"><p data-tag="p" id="p-kwo-rxh-ort" class="p"><span data-mce-style="font-size: 11px" data-tag="span" id="span-4tr-37k-f8v" class="span">系統租戶</span></p></td><td data-tag="td" id="td-rfj-bw2-pmt" class="td"><p data-tag="p" id="p-449-mkm-hb6" class="p">查看集群參數和其他租戶參數</p></td><td data-tag="td" id="td-da5-3ps-jap" class="td"><p data-tag="p" id="p-gz8-ac3-gun" class="p">可以設置集群參數或指定租戶的參數</p></td></tr><tr data-tag="tr" id="tr-bsa-nl3-kg9" class="tr"><td data-tag="td" id="td-1d1-la7-8is" class="td"><p data-tag="p" id="p-mkq-ptk-5ic" class="p"><span data-mce-style="font-size: 11px" data-tag="span" id="span-2eo-7iy-igi" class="span">普通租戶</span></p></td><td data-tag="td" id="td-6yc-3e4-snf" class="td"><p data-tag="p" id="p-o3d-ygx-9rh" class="p">只能查看本租戶的參數</p></td><td data-tag="td" id="td-4ag-96j-6bo" class="td"><p data-tag="p" id="p-ov9-ii2-cmq" class="p">只能設置本租戶的參數</p></td></tr></tbody></table> 當 OBServer 啟動后,如果沒有指定參數,則使用系統指定的參數 Default 值。在 observer 進程啟動成功后,參數值持久化到`/home/admin/oceanbase/etc/observer.config.bin`文件中,您可以通過`strings`命令來查看內容。
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